WO2020004540A1 - Unité de coffrage et procédé de fabrication d'une structure en béton - Google Patents

Unité de coffrage et procédé de fabrication d'une structure en béton Download PDF

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Publication number
WO2020004540A1
WO2020004540A1 PCT/JP2019/025565 JP2019025565W WO2020004540A1 WO 2020004540 A1 WO2020004540 A1 WO 2020004540A1 JP 2019025565 W JP2019025565 W JP 2019025565W WO 2020004540 A1 WO2020004540 A1 WO 2020004540A1
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WO
WIPO (PCT)
Prior art keywords
concrete
panel
concrete structure
formwork
buried
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/025565
Other languages
English (en)
Japanese (ja)
Inventor
町谷行啓
西村征志
竹内敏治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daicel Finechem Ltd
Nishimura KK
Original Assignee
Daicel Finechem Ltd
Nishimura KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daicel Finechem Ltd, Nishimura KK filed Critical Daicel Finechem Ltd
Priority to JP2020527626A priority Critical patent/JP7017213B2/ja
Priority to CN201980043690.XA priority patent/CN112352084B/zh
Priority to JP2019224809A priority patent/JP2021006697A/ja
Publication of WO2020004540A1 publication Critical patent/WO2020004540A1/fr
Priority to JP2020219322A priority patent/JP6968375B2/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use

Definitions

  • the present invention relates to a formwork unit used when forming a concrete structure by casting concrete, and a concrete structure construction method using the formwork unit.
  • the formwork that defines the filling range of the concrete raw material is composed of a plurality of panels (hereinafter sometimes referred to as “removable panels”) that are removed from the concrete structure after construction. Often formed by assembling pieces. Techniques related to such a concrete casting formwork are described in, for example, Patent Documents 1 to 3 below.
  • the concrete structure to be formed has a step structure (one upward surface (first upward surface), another upward surface (second upward surface) higher than this, and the two upward surfaces).
  • first upward-facing surface the removal panel that defines the side wall surface of the step structure needs to be removed after the concrete structure is constructed.
  • the removal panel is assembled in such a manner that the lower end of the side wall surface defining removal panel is positioned higher than the height position to be formed (that is, the height position and the side of the first upward surface to be formed).
  • the removal panel is assembled in such a manner that a predetermined interval is provided between the panel and the lower end of the wall defining panel.
  • the installation of the panel may be simplified.
  • the detached panel is likely to be distorted due to its own weight and the load (for example, impact load, etc.) of the concrete raw material that is filled and flows into the section defined by the formwork.
  • the load for example, impact load, etc.
  • the formed concrete structure is also distorted. It is necessary to repair a concrete structure with such a distortion, and such a need for repair leads to an increase in work, time, and cost required for construction of the concrete structure, which is not preferable.
  • the present invention includes at least one buried panel and at least one fixture,
  • the fixing tool has an end face for abutting the embedded panel, and is a fixing tool that is screwed to the embedded panel at the end face, and is a fixing tool that can be connected to an installation location side connection member.
  • An installation form unit is provided.
  • the present invention also provides the formwork unit, wherein the embedded panel has a through-hole for screwing a fixture.
  • the present invention also provides the formwork unit, wherein the embedded panel has a mark on at least one surface thereof, the mark indicating a portion where a through hole for fixing a fixing tool is to be formed.
  • the fixing tool is a convex member having an end face for contacting the embedded panel, and when the embedded panel is assembled on a side opposite to the end face to form a mold. And a mold unit having connection means for fixing the embedded panel at a predetermined position.
  • the fixture is a convex member having an end face for contacting the embedded panel, and the concrete panel is formed by assembling the embedded panel on a side opposite to the end face.
  • the formwork unit is provided, which has means for connecting from the inside of the concrete filling section to a connecting member extending in the surface direction of the embedded panel.
  • the fixing device further includes a main body made of a convex member, and a buried panel contact flange provided at one end of the main body, and a screw hole at the other end side shaft portion of the main body. And the formwork unit.
  • the fixing tool further includes a pedestal portion having an embedded panel contact flange at one end of a main body formed of a cylindrical member, and a nut portion, wherein the nut portion is provided in a cylindrical hole of the pedestal portion.
  • the present invention provides the form unit fitted and inserted.
  • the present invention also provides the formwork unit, wherein a surface of the buried panel, which is installed toward the inside of the concrete filling section, includes an adhesion improving surface.
  • the present invention also provides the formwork unit, wherein, among the surfaces of the buried panel, a surface installed toward the outside of the concrete filling section includes an adhesion improving surface and / or a decorative surface.
  • the present invention also provides the formwork unit, further comprising a connector for connecting two adjacent buried panels in a manner of being flush with each other.
  • the present invention also provides the formwork unit, further comprising a connector for connecting two adjacent buried panels in a manner orthogonal to each other.
  • the present invention also provides the formwork unit, further comprising a height adjuster for adjusting a height position of the embedded panel.
  • the present invention is also a method of placing concrete using the formwork unit and constructing a concrete structure, Step 1 of assembling the formwork unit by screwing the fixing tool on the surface of the buried panel, disposing the assembled formwork unit at a predetermined position, and defining a section where the concrete raw material is to be filled When, Fixing the placed form unit with the fixing tool to form a form; Step 3 of supplying a raw material for concrete into the formed formwork.
  • the step 2 by connecting a fixture of the arranged form unit and a connecting member extending in a surface direction of the form unit from the inside of the concrete filling section,
  • the method for constructing a concrete structure comprising fixing a formwork unit.
  • the present invention also provides the concrete structure construction method, wherein the concrete structure is a structure including a ridge structure portion.
  • the present invention also provides the concrete structure construction method, wherein the concrete structure is a structure including a convex structure.
  • the present invention also provides the concrete structure, wherein the concrete structure is at least one structure selected from a stair, a sill, a beam, a window frame, a ceiling, a floor, a column, a wall, a retaining wall, a parapet, and a gantry.
  • the concrete structure construction method is provided.
  • the present invention is also a method for renovating a concrete structure by placing concrete using the formwork unit,
  • the fixing unit is screwed on the surface of the buried panel to assemble the form unit, and the fixing unit of the assembled form unit and the repaired surface of the concrete structure extend in the surface direction of the form unit.
  • the present invention is also a construction method for forming a concrete structure including a step structure between a first upper surface and a second upper surface higher than the first upper surface using the formwork unit, A plurality of panels including the at least one buried panel in the form unit, which forms a side wall surface between the first upper surface and the second upper surface in the step structure, are assembled.
  • the present invention also provides the concrete structure construction method, wherein in the formwork, a lower end position of the embedded panel is equal to or lower than the first height position in a vertical direction. I will provide a.
  • the concrete structure may further include a ridge structure having a pair of side walls facing opposite sides between the first upper surface and the second upper surface.
  • the method for constructing a concrete structure, wherein the formwork includes at least one pair of the buried panels which are separated and assembled to form the pair of side walls of the ridge structure portion.
  • the concrete structure may further include a convex structure portion having a plurality of side walls that form an entire circumference between the first upper surface and the second upper surface, which is higher than the first upper surface.
  • the concrete structure construction method is provided, wherein the formwork includes one or two or more buried panels for forming part or all of the plurality of side wall surfaces of the convex structure portion.
  • the present invention also provides a concrete structure in which a buried panel included in the form unit forms at least one surface selected from an upper surface, a lower surface, and a side surface of the concrete structure.
  • work required for construction of a concrete structure, time, and cost can be reduced, and a concrete structure with a strong and excellent appearance can be formed by simple operation.
  • the concrete structure to be formed is a ceiling or the like
  • the conventional construction method has had problems such as peeling and collapse, but if the formwork unit of the present invention is used, the concrete structure can be used as a foundation. Since it is firmly fixed to a steel frame or the like forming a part or a frame, peeling or collapse can be suppressed, and seismic resistance can be dramatically improved.
  • the formwork unit of the present invention can reduce the environmental load.
  • the repaired surface of the concrete structure can be simply, quickly and beautifully repaired by using the formwork unit.
  • the concrete structure after the renovation can be provided with excellent earthquake resistance.
  • FIG. 6 is a perspective view of an embedded panel in a modified example of the form unit shown in FIG. 1.
  • FIG. 5 is an enlarged partial cross-sectional view of the form unit in a state where the embedded panel is assembled.
  • Fig. 4 shows a configuration example of a separator that is an assembly location side connection member. 7 shows a modification of the fixture. 4 shows a modification of the formwork unit shown in FIG. 1. 4 shows a modification of the formwork unit shown in FIG. 1. 1 shows a part of steps of a concrete structure construction method according to one embodiment of the present invention. 1 shows a part of steps of a concrete structure construction method according to one embodiment of the present invention.
  • FIG. 6 is a perspective view of an embedded panel in a modified example of the form unit shown in FIG. 1.
  • FIG. 5 is an enlarged partial cross-sectional view of the form unit in a state where the embedded panel is assembled.
  • Fig. 4 shows a configuration example of a separator that is an assembly location side connection member. 7 shows a modification
  • FIGS. 8 and 9 partially shows a modification of the concrete structure construction method shown in FIGS. 8 and 9.
  • 10 partially shows another modification of the concrete structure construction method shown in FIGS. 8 and 9.
  • It is a figure which shows the modification of the screwing part of the fixing tool in an embedded panel.
  • It is a figure which shows the modification of the shape of a fixture.
  • It is a figure which shows an example of the fixing tool comprised of two parts, and shows the pedestal part provided with a cylindrical hole, and the nut part inserted in the cylindrical hole of the said pedestal part.
  • It is a side view (a) and a perspective view (b) of a fixture including a pedestal part provided with a cylindrical hole, and a nut part, and the above-mentioned nut part is inserted in the cylindrical hole of the pedestal part.
  • FIG. 18 is a top view of an example of assembling the form unit shown in FIG. 17. It is a schematic diagram which shows an example of the assembling method of the formwork unit in the concrete structure repair method of the present invention.
  • the form unit X of the present invention includes at least one embedded panel 10 and at least one fixture 30.
  • the fixing tool 30 has an end face 31 for contacting the embedded panel 10, and is a member that is screwed to the embedded panel 10 at the end face 31, and can be connected to an assembly location side connection member.
  • the formwork unit X of the present invention is used for forming a concrete casting formwork.
  • FIGS. 1 and 3 show a mold unit X according to an embodiment of the present invention.
  • the form unit X includes at least one buried panel 10 and at least one set of fixtures 30 for each buried panel 10.
  • the fixture 30 is screwed to the embedded panel 10.
  • a temporary mold support has been used to support the dam, but the embedded panel 10 of the present invention has a fixture on its surface. A buried panel 10 is attached to the buried panel 10 at a predetermined position by the attached fixture 30, and is assembled. Therefore, the formwork can be formed without using the formwork support.
  • the embedded panel 10 is a rectangular plate having a surface 11 and a surface 12 opposite thereto, and in this embodiment, is a flat fiber-reinforced cement plate.
  • the length of the embedded panel 10 in the longitudinal direction is, for example, 30 to 242 cm, and the length in the short direction is, for example, 2 to 242 cm.
  • the surface installed toward the inside of the concrete filling section is referred to as a surface 11 and the surface facing the outside of the concrete filling section.
  • the surface to be installed is referred to as a surface 12.
  • Examples of the flat fiber-reinforced cement board include a slate board, a calcium silicate board, and a slag gypsum board.
  • the slate board contains, for example, cement, fiber (except for asbestos), and admixture as main raw materials.
  • the calcium silicate plate contains, as main raw materials, for example, calcareous raw materials, siliceous raw materials, fibers (excluding asbestos), and admixtures.
  • the slag gypsum board includes, for example, slag, gypsum, fiber (excluding asbestos), and admixture as main raw materials.
  • the standards for these fiber reinforced cement boards are defined in JIS A5430.
  • a slate board and a calcium silicate board are preferable as the fiber-reinforced cement board.
  • a commercially available slate board for example, "Self Rex” manufactured by A & A Material Co., Ltd. may be mentioned.
  • a commercially available product of the calcium silicate plate for example, “Hi-Lack M” manufactured by A & A Material Co., Ltd. may be mentioned.
  • a commercial product of the slag gypsum board for example, "Tiger Board” manufactured by Yoshino Gypsum Co., Ltd. is exemplified.
  • the thickness of the embedded panel 10 is preferably 3 mm or more, more preferably 5 mm or more, and still more preferably 7 mm or more. Such a configuration is preferable from the viewpoint of securing the strength of the buried panel 10, and furthermore, suppresses breakage and bending of the buried panel 10 at the time of transporting and assembling the buried panel 10 and at the time of placing concrete. Above.
  • the thickness of the embedded panel 10 is preferably 30 mm or less, more preferably 20 mm or less, and further preferably 10 mm or less. Such a configuration is preferable from the viewpoint of reducing the weight of the embedded panel 10, and further, is preferable from the viewpoints of suppressing the manufacturing cost and the transportation cost of the embedded panel 10 and facilitating the assembling work of the embedded panel 10.
  • the embedded panel 10 may have a through-hole for screwing the fixture 30, that is, a through-hole 13 passing between the surfaces 11 and 12 of the embedded panel, or the through-hole 13 may be formed.
  • the through hole 13 may not be formed yet.
  • the embedded panel 10 has, on the surface 11 and / or the surface 12, a mark 21 indicating a place where the through-hole is to be formed, as shown in FIG. 2.
  • the number of through holes 13 formed in the buried panel 10 depends on the size and shape of the buried panel, the number of fixtures 30 obtained based on the stress applied to the buried panel 10 due to the weight and load of the concrete to be filled, and the like. Although it is determined, it is, for example, in the range of 1 to 20, preferably 4 to 10. If the number of the through holes 13 is too small, the embedded panel 10 may be distorted due to the weight and load of the concrete when the concrete is filled. There is a risk that time and cost will increase, and uniform filling of concrete will become difficult. As shown in FIG. 12 (a front view of the embedded panel 10 on the eleventh side), the portions where the through holes 13 are provided may be provided in a line, may be provided at four corners, or may be provided at the four corners and the center. Or zigzag.
  • the surface 11 of the embedded panel 10 may be provided with an adhesion improving surface over a part or the whole thereof.
  • the adhesion-improved surface is, for example, a surface suitable for joining with the concrete after hardening, and is a surface on which a treatment for improving the adhesiveness with the concrete after hardening has been performed.
  • the adhesion improving surface of the embedded panel 10 is, for example, a mortar cured product layer surface, an uneven molding surface, a mechanically roughened surface, or a combination thereof. From the viewpoint of mass production and economical efficiency of the embedded panel 10, the surface of the mortar cured material layer is preferable as the adhesion improving surface of the embedded panel 10.
  • the surface of the mortar hardened material layer in the embedded panel 10 can be formed by applying mortar to the above-mentioned portion where the adhesion improving surface is to be formed in the fiber reinforced cement board and then curing the mortar.
  • the mortar includes, for example, polymer cement mortar, epoxy resin mortar, and cationic mortar.
  • Polymer cement mortar is, for example, a mortar that is a mixture of cement, fine aggregate, water, and a polymer dispersion or re-emulsifying powder resin.
  • the polymer dispersion include an ethylene vinyl acetate resin (EVA) and an acrylic resin.
  • EVA ethylene vinyl acetate resin
  • acrylic resin As a commercially available product of ethylene vinyl acetate resin that can be used as a polymer dispersion, for example, “Cell Mighty 10” manufactured by Daicel Finechem Co., Ltd. can be mentioned.
  • As a commercial product of an acrylic resin that can be used as a polymer dispersion for example, “Super Petlock 400” manufactured by Asahi Kasei Corporation can be mentioned.
  • the cationic mortar is, for example, a mortar which is a mixture of cement, fine aggregate, water, and a cationic polymer dispersion or a cationic re-emulsifying powder resin.
  • the cationic polymer dispersion include a cationic styrene butadiene rubber and a cationic acrylic resin.
  • a commercially available cationic styrene butadiene rubber that can be used as a cationic polymer dispersion “Certal” manufactured by Daicel Finechem Co., Ltd. can be mentioned.
  • Commercially available cationic acrylic resins that can be used as a cationic polymer dispersion include “Cell Cation” manufactured by Daicel Finechem.
  • Epoxy resin mortar is, for example, a mortar that is a mixture of an epoxy resin and fine aggregate.
  • Commercially available epoxy resin mortars include, for example, "K mortar” manufactured by Konishi Corporation.
  • Examples of the fine aggregate in the mortar include silica sand, river sand, obsidian perlite, perlite perlite, and calcium carbonate powder.
  • the mortar may include one type of fine aggregate, or may include two or more types of fine aggregate.
  • the thickness of the mortar hardened material layer is preferably 0.5 mm or more, more preferably, from the viewpoint of securing high adhesive strength to the concrete raw material. Is 1 mm or more, more preferably 1.5 mm or more.
  • the thickness of the mortar cured product layer is preferably 10 mm or less, more preferably. Is 5 mm or less, more preferably 3 mm or less.
  • water absorption adjusting agent examples include a so-called water absorption adjusting agent for coating a cement mortar, which is mainly composed of an emulsion of a synthetic resin or a polymer dispersion.
  • synthetic resin in such a water absorption modifier examples include an acrylic resin, a vinyl acetate resin, an ethylene vinyl acetate resin, and a synthetic rubber.
  • Commercially available water absorption modifiers for cement mortar application include, for example, "Cell Mighty 10," “Cell Tite 10," “Cell Lock J,” and “Cell Primer J” (manufactured by Daicel Finechem Co., Ltd.). And “Plastas AC-300” (each containing an acrylic resin) manufactured by Showa Denko Kenzai Co., Ltd.
  • the above-mentioned uneven forming surface as the adhesion improving surface in the embedded panel 10 has a predetermined uneven shape on a surface in contact with a portion where the adhesion improving surface is to be formed, for example, in a process of manufacturing a fiber reinforced cement board for forming the embedded panel 10.
  • the fiber reinforced cement board can be formed by press molding or extrusion molding using a mold member such as a template.
  • the above-mentioned mechanically roughened surface as the adhesion improving surface of the embedded panel 10 is, for example, a mechanically rough surface such as sanding or chipping with respect to a portion where the adhesion improving surface of the fiber reinforced cement board for forming the embedded panel 10 is to be formed. It can be formed by performing roughening treatment to roughen the portion.
  • the surface 12 of the buried panel 10 may be provided with a decorative surface over a part or the entirety thereof, or may be provided with the adhesion improving surface.
  • the surface 12 of the buried panel 10 includes the adhesion improving surface, it is suitable for performing the tile bonding operation on the adhesion improving surface of the buried panel surface 12 after the construction.
  • the decorative surface is, for example, a smooth flat molded surface, a paint cured film surface, or a decorative sheet sticking surface.
  • the smooth flat molding surface is formed by using a mold member such as a template having a smooth flat surface in contact with a portion where a decorative surface is to be formed. It can be formed by pressing or extruding a plate.
  • a panel (fiber reinforced cement board) having such a smooth flat molding surface a "flexible board (decorative board finish type)" which is a kind of slate board of the Japan Society for Reinforced Cement Board is known.
  • the surface of the cured paint film can be formed by applying a paint to a portion where a decorative surface of a fiber reinforced cement board for forming the embedded panel 10 is to be formed and then curing the applied paint.
  • usable paints include organic paints, inorganic paints, and organic / inorganic composite paints. From the viewpoint of durability of the surface of the formed cured coating film, inorganic coatings and organic / inorganic composite coatings are preferred.
  • the organic paint include an acrylic resin paint, an epoxy paint, a urethane resin paint, a fluororesin paint, a polyester paint, and a vinyl organosol paint.
  • the inorganic paint examples include an alkyl silicate paint, a photocatalytic titanium oxide-containing inorganic paint, a silica sol paint, an alkali metal salt paint, a metal alkoxide paint, a cement lysine paint, and a cement stucco paint.
  • the organic / inorganic composite paint examples include an organic / inorganic composite paint containing a siloxane bond, a metal alkoxide-based paint, a ceramic paint, and an organic / inorganic composite paint containing photocatalytic titanium oxide. These paints may contain other additives such as a filler, a thickener, a leveling agent, an antifoaming agent, and a stabilizer in addition to the pigment.
  • Examples of the decorative sheet for forming the decorative sheet attachment surface include a vinyl chloride decorative sheet, a thermoplastic resin decorative sheet, a thermosetting resin decorative sheet, a leaf decorative sheet, and a so-called P tile.
  • a vinyl chloride decorative sheet is formed by printing a pattern on an opaque vinyl chloride sheet kneaded with a pigment, heating and bonding a transparent vinyl chloride film on the printed surface, and embossing the printed surface side as necessary. Can be manufactured. The embossing can be performed, for example, by pressing with a roll having an uneven surface.
  • the decorative sheet of thermoplastic resin can be produced, for example, in the same manner as the method of producing a decorative vinyl chloride sheet except that various plastic resins are used instead of the vinyl chloride resin as a resin constituting the sheet.
  • the thermosetting resin decorative sheet is obtained by impregnating a decorative paper having a basis weight of 55 to 200 g / m 2 with a thermosetting resin such as a melamine resin, a diallyl phthalate resin, or a polyester resin, and then impregnating the same thermosetting resin. It can be produced by stacking on a base material sheet such as kraft paper and subjecting the obtained laminate to hot press molding using a multi-stage hot press machine or a continuous molding press machine.
  • the thin leaf decorative sheet is, for example, subjected to solid color printing on thin paper having a basis weight of about 30 g / m 2 , a pattern is printed on the solid printing surface, and an aminoalkyd resin paint or a polyurethane resin paint or the like is applied to the print surface. It can be manufactured by applying a paint finish.
  • the decorative sheet for forming the decorative sheet attachment surface is preferably a vinyl chloride decorative sheet and a P tile.
  • an adhesive resin such as a urethane resin, a vinyl resin, and an acrylic resin.
  • the fixture 30 of the present invention is a member having an end face 31 for abutting the embedded panel 10 and being screwed to the embedded panel 10 at the end face 31.
  • the fixing tool 30 can be connected to an assembly location side connection member.
  • the embedded panel 10 can be fixed at a predetermined position when the embedded panel 10 is assembled to form a mold.
  • the fixture 30 is, for example, a convex member having an end surface 31 for contacting the embedded panel 10, and is screwed to the embedded panel 10 at the end surface 31, and the embedded member 10 is mounted on a side opposite to the end surface 31. It is a member having a connecting means for fixing the embedded panel 10 at a predetermined position when the mold unit X including the panel 10 is assembled to form a mold.
  • the connecting means is a means for connecting the connecting member S extending toward the surface 11, and the connecting member S extending from the inside of the buried panel 10 and the concrete filling section toward the surface 11 of the buried panel 10. It is particularly preferable to use screw fastening means.
  • the fixing tool 30 is preferably a convex member having an end face 31 for contacting the embedded panel 10, and is screwed to the embedded panel 10 at the end face 31, and on the side opposite to the end face 31,
  • the buried panel 10 is assembled to form a concrete filling section
  • it is a member having means for connecting with a connecting member S extending from the inside of the concrete filling section toward the surface 11 of the buried panel 10.
  • the fixing device 30 more preferably includes a main body 120 made of a convex member, and an embedded panel contact flange 122 provided at one end of the main body. It is a member having screw holes 123 and 124 in the other end side shaft portion. According to the member, the screw structure of the connecting member S having a screw structure at at least one end can be screwed into the screw holes 123 and 124 from the other end of the main body 120. When the screw structure of the connecting member S is screwed into the screw holes 123 and 124 of the fixture 30, the connecting member S and the buried panel 10 can be tightened. The assembly of the panel 10 can be made strong.
  • the fixing device 30 may have a screw hole 32 for screwing the embedded panel 10 to the embedded panel abutting flange 122.
  • the screw hole 32 screwes the screw structure of the connecting member S, as shown in FIG. 13B, a through screw hole may be formed in communication with the screw hole 123, and separately from the screw hole 124 for screwing the screw structure of the connecting member S as shown in FIG. It may be provided.
  • the fixing tool 30 when the fixing tool 30 does not have the screw hole 32, the fixing tool 30 is arranged such that the embedded panel contact flange 122 contacts the surface 11 of the embedded panel 10.
  • a sharp-pointed screw e.g., self-tapping screw, drill screw, drill tapping screw, piercing screw, building material screw, ALC screw, wood screw, etc.
  • a pilot hole may be formed in the fixing tool 30 so that the pointed screw is screwed straight into a predetermined position of the fixing tool 30.
  • the fixing tool 30 may be composed of one part, or may be composed of two or more parts. In the case where it is composed of one part, the effect of reducing the number of parts of the formwork unit X can be obtained.
  • the nut part 30B is inserted into the cylindrical hole 121 of the pedestal part 30A so that the screw hole 126 of the nut part 30B is exposed from the hole of the pedestal part 30A.
  • the fixing tool 30 has a screw hole 32 on the embedded panel contact surface 122A of the flange 122, and the screw 20 for screwing can be inserted through the screw hole 32.
  • Examples of the fixing device 30 include commercially available products such as “Insulated Pad” sold by Kondo Tech Co., Ltd. and “Insulated Con (KP Con)” sold by Sankyo Tec Co., Ltd. Goods can be used.
  • the fixture 30 including the pedestal portion 30A and the nut portion 30B whose constituent materials are different from each other. In other words, it contributes to the rigid assembly of the buried panel 10 and the pedestal portion 30A whose constituent material is selected based on the characteristics required for the embedded panel abutting end face 31 which has the function of suppressing the inclination and distortion of the buried panel 10. It is possible to realize a fixture 30 having a complex configuration including a nut portion 30 ⁇ / b> B whose constituent material is selected based on characteristics required for the screw hole portion 32 to be formed.
  • the fixing device 30 may include a nut connector 30C as shown in FIG. 5A or a nut connector 30D as shown in FIG. 5B instead of the nut portion 30B.
  • the nut connector 30C has a configuration in which two nut portions 34 and 35 are connected via a universal joint.
  • the nut part 34 has a screw hole part 32 for screwing to the embedded panel 10.
  • the nut part 35 has a screw hole part 32 'into which a screw structure part at the end of a so-called separator, which is a connection member on the side of the embedded panel assembling point, can be screwed.
  • the nut connector 30D includes two nut portions 36 and 37 and a screw portion 38.
  • the nut portion 37 and the screw portion 38 are connected via a universal joint.
  • the nut portion 36 has a screw hole 32 for screwing to the embedded panel 10.
  • a screw portion 38 can also be screwed into the screw hole portion 32.
  • the nut part 37 has a screw hole part 32 'into which a screw structure part at the end of a so-called separator, which is a connection member on the side of the embedded panel assembly point, can be screwed.
  • the pedestal portion 30A and the nut portion 30B are used instead of the combination, the screw structure of the connecting member S can be screwed into the screw hole, and the form unit X is firmly fixed. Can be assembled.
  • the fixture 30 is screwed with the embedded panel abutting end face 31 applied to the surface 11 of the embedded panel 10.
  • the number of the fixtures 30 screwed to one embedded panel 10 is determined by the size and shape of the embedded panel, the weight of the concrete to be filled, the stress applied to the embedded panel 10 due to the load applied to the embedded panel 10, and the like. Although it is determined according to the number, for example, it is in the range of 1 to 20, preferably 4 to 10. If the number of the fixtures 30 is too small, the embedded panel 10 may be distorted due to the weight and load of the concrete when the concrete is filled. If the number is too large, the number of the fixtures 30 and the connecting members increases, and the work at the time of assembling is performed.
  • the screwing portions of the fixture 30 on the surface 11 of the embedded panel 10 may be arranged in a line or at four corners. Or at the four corners and the center, or zigzag.
  • the screw 20 used to screw the fixture 30 to the embedded panel 10 has a dimension longer than the thickness of the embedded panel 10 in its extending direction, and has a predetermined thread.
  • the screw 20 can be selected from known ones. For example, hexagon bolt, hexagon socket head cap screw, washer built-in hexagon bolt, eye bolt, wing bolt, pan screw, countersunk screw, truss screw, bind screw, self-tapping screw, drill screw, drill tapping screw, piercing screw, piercing screw, building material
  • a screw selected from a screw, an ALC screw, and a wood screw can be used as the screw 20.
  • a female screw portion of various known form ties (registered trademark) (or a home tie) for fixing a formwork may be referred to as a bar screw ("dimming screw” or “full screw”). ) May be used by screwing a part of it to expose the rest.
  • a commercially available form tie (registered trademark) (or home tie) can be used.
  • foam ties examples include, for example, a form tie (registered trademark) with a nut (trade name “form tie (registered trademark) C type @ C8-150” sold by Okabe Co., Ltd.), Wedge-type foam tie (registered trademark) (trade name “wedge-type phone tie 2K-60@W5/16.60 square pipe” sold by Kondo Tech Co., Ltd.), and screw-type foam tie (registered trademark) (Such as “RB Screw Phone Tie (3-Type Rib Seat Nut / SW Set) 8-180” sold by Kondo Tech Co., Ltd.).
  • the buried panel assembling point side connecting member S is, for example, when the formwork unit X is assembled to form a concrete filling section, the embedding forming the formwork unit X from a position inside the concrete filling section.
  • the member extends toward the surface 11 of the panel 10.
  • the connecting member S is, for example, a separator.
  • the separator may be a separator having a screw structure at both ends, or a separator having a screw structure at only one end. Further, the separator may be linear, or may be bent at arbitrary plural places. Further, the end opposite to the end having the screw structure may be bent into a hook shape, or a hook may be attached.
  • These separators are known by names such as round separators, stat separators, single-bend separators, double-bend separators, anchor separators, and hook separators.
  • the connecting member S a member in which two or more of the separators are connected may be used.
  • the connecting member S may be, for example, a composite separator as shown in FIG. 4A or a composite separator as shown in FIG. 4B.
  • the composite separator shown in FIG. 4A has a separator 41 having a positive screw structure at both ends and a reverse screw structure at both ends, or a positive screw structure at the left end in the drawing and a reverse screw structure at the right end in the drawing.
  • a separator 42 having a screw structure portion, and a connection fitting 43 having screw hole portions into which these can be screwed at least at both ends are provided.
  • connection fitting 47 having holes at least at both ends and a connection fitting 48 having screw holes at least at both ends to which the separators 45 and 46 can be screwed are provided.
  • the connection fittings 43, 47, 48 are, for example, so-called turnbuckles or joint nuts, respectively. The above-mentioned various separators can be properly used according to the mounting location or mounting height of the embedded panel 10 of the mold unit X.
  • One end of the connecting member S is connected to a connecting means of the fixture 30 [for example, a screw structure at one end of the connecting member S and a screw hole (a screw hole 32, a screw hole 32 ', a screw hole 123, a screw hole 124). , Screw holes 126, etc.). That is, one end of the connecting member S is held by screw fastening with the fixture 30.
  • a connecting means of the fixture 30 for example, a screw structure at one end of the connecting member S and a screw hole (a screw hole 32, a screw hole 32 ', a screw hole 123, a screw hole 124).
  • the other end of the connecting member S is held at a position inside the concrete filling section when the form unit X is assembled to form a concrete filling section.
  • the other end of the connecting member S As a method for holding the other end of the connecting member S, for example, when the form unit X is assembled to form a concrete filling section, another panel that forms a filling section together with the form unit X (for example, The other end of the connecting member S may be fixed to an embedded panel and / or a removed panel of another form unit X located on the opposite side. In the case where existing concrete forms one corner of the filling section together with the formwork unit X, the other end of the connecting member S may be embedded in the concrete to form a so-called anchor bolt.
  • connection member S may be welded and fixed to an iron member such as a steel frame or a reinforcing bar existing inside the concrete filling section, or may be connected to the iron member via a connection fitting.
  • an iron member such as a steel frame or a reinforcing bar existing inside the concrete filling section
  • the hook is connected to a steel frame existing inside the concrete filling section. It may be connected by hooking on an iron member such as a steel bar or another connecting member S.
  • connecting metal fittings examples include, for example, a product name “Sepa Grip” sold by Okabe Co., Ltd., a product name “SKA UNIVA” and a product name “Domaster” sold by Kyoei Seisakusho Co., Ltd. Brand name "Tetsukabuto (with nut)” sold by Kokugen Shokai Co., Ltd .; brand name "KS Guts” sold by Kokusai Shokai Co., Ltd. "Wire clip @ KM clip", a "joint fitting for connecting a separator to a reinforcing rod or a round bar” described in JP-A-2008-214911, and JP-A-2003-013600. No. 5,009,086, entitled “Connecting Bracket for Reinforcing Bar and Separator”.
  • the mold unit X may further include a connector 50A as shown in FIG.
  • the connection tool 50A is for connecting two adjacent buried panels 10 assembled in the construction of the concrete structure in a manner that their surfaces 12 are flush with each other, and in the present embodiment, at least in the embodiment, A plate 51 and a predetermined number of fastening members 52 are provided (FIG. 6A exemplarily shows a connection tool 50A when four fastening members 52 are provided).
  • the fastening material 52 is, for example, a drill screw.
  • the fastening material 52 is a drill screw
  • the through-hole formed so as to penetrate the flat plate 51 and each of the embedded panels 10 from the surface 12 side of the embedded panel 10.
  • the fastening member 52 may be a bolt.
  • the fastening material 52 is a bolt
  • the bolt (fastening material 52) inserted from the surface 12 side of the embedded panel 10 into a through hole formed so as to penetrate the flat plate 51 and each embedded panel 10.
  • the nut fastened to the screw structure on the surface 11 side the fixing of the flat plate 51 over the two adjacent buried panels 10 is realized.
  • connection tool 50A means that a plurality of buried panels 10 can be provided on a concrete structure (for example, a concrete wall 70 or a concrete structure 80 described later) formed using the form unit X. This is preferable for appropriately forming a flat side wall surface extending over the entire surface. Further, after forming the side wall surface using such a connecting tool 50A, the fastening material 52 and the flat plate 51 when the flat plate 51 is applied to the surface 12 side are removed from the side wall surface. By repairing at least the outer opening end of the relatively small buried panel through hole into which the fastening material 52 has been inserted with mortar, it is possible to secure a good appearance on the side wall surface.
  • the number of the fastening members 52 included in one set of the connection tool 50A is four in FIG. 6A, but may be two, three, five or more. 6A, the number of the connecting devices 50A used to connect a pair of adjacent two embedded panels 10 is one, but may be two or three or more. .
  • the form unit X may further include a connecting tool 50B as shown in FIG.
  • the connecting tool 50B connects two adjacent buried panels 10 assembled at the time of construction of the concrete structure in a manner orthogonal to each other, or connects two adjacent buried panels 10 in such a manner that their surfaces 11 intersect.
  • at least the bending plate 53 and a predetermined number of fastening members 54 are provided (FIG. 6B exemplarily shows the connection tool 50B in the case of including four fastening members 54). Things).
  • the bent plate 53 extends over the two adjacent buried panels 10 and is applied to, for example, the surface 12 (outer surface) side thereof.
  • the fastening member 54 is, for example, a drill screw.
  • the fastening member 54 is a drill screw, the through-hole formed so as to penetrate the bent plate 53 and each of the embedded panels 10 from the surface 12 side of the embedded panel 10.
  • the inserted fastening material 54 realizes fixing of the bent plate 53 over two adjacent buried panels 10.
  • the bent plate 53 may be applied to the surface 11 (inner surface) of the two embedded panels 10 adjacent to each other, or the fastening member 54 may be a bolt.
  • the fastening member 54 is a bolt
  • the bolt the fastening member 54
  • the fastening member 54 inserted from the surface 12 side of the embedded panel 10 into the bent plate 53 and the through hole formed so as to penetrate each embedded panel 10.
  • the nut fastened to the screw structure on the side of the surface 11 realizes the fixing of the bent plate 53 over the two adjacent buried panels 10.
  • connection tool 50B The fact that the form unit X is provided with such a connection tool 50B is that the form unit X is laterally connected to a concrete structure (for example, a concrete wall 70 or a concrete structure 80 described later) formed using the form unit X. It is preferable to appropriately form a side wall surface including an adjacent plane forming a predetermined angle such as a right angle. Also, after forming the side wall surface using such a connecting tool 50B, the fastening member 54 and, when the bent plate 53 is applied to the surface 12 side, the bent plate 53 are removed from the side wall surface. By repairing at least the outer opening end of the relatively small buried panel through-hole into which the fastening material 54 has been inserted with mortar, a good appearance can be secured on the side wall surface.
  • connection tool 50B The number of the fastening members 54 included in one set of the connection tool 50B is four in FIG. 6B, but may be two, three, five or more.
  • the number of the connector 50B used to connect a pair of adjacent two embedded panels 10 is one in FIG. 6B, but may be two or three or more. .
  • the two buried panels 10 shown in FIG. 6B are arranged to form the step portion of the concrete structure having the step portion including the protruding corner portion (the above-described arrangement provided with the adhesion improving surface).
  • the arrangement of the two buried panels 10 depends on the step including the corner portion. This is an arrangement (an arrangement in which a stepped portion including an entry corner portion is formed on the side of the surface 11 on which the adhesion improving surface is provided) of the concrete structure having a portion.
  • the form unit X may further include a height adjuster 60A as shown in FIGS. 7A and 7B. Such a configuration is preferable for accurately positioning the mounting height of the buried panel when constructing a concrete structure using the form unit.
  • the height adjuster 60 ⁇ / b> A is for adjusting the height position of the embedded panel 10 to be assembled when the concrete structure is constructed, and includes a receiving member 61 and leg members 62 that support the receiving member 61.
  • the receiving member 61 has a groove for receiving an embedded panel wider than the thickness of the embedded panel 10.
  • the receiving member 61 may not have a groove for receiving an embedded panel.
  • the receiving member 61 may have a flat plate of various shapes as a buried panel contact portion. The flat plate may have an upwardly folded structure that can abut on the surface 11 or the surface 12 of the embedded panel 10 to help define the position of the embedded panel 10.
  • the receiving member 61 may have an embedded panel supporting rod-shaped member as an embedded panel contact portion.
  • the rod-shaped member may have an upward folded structure which can be used to define the position of the embedded panel 10 by contacting the surface 11 or the surface 12 of the embedded panel 10, or may have a V-shaped or U-shaped shape. You may have. These configurations in which the receiving member 61 does not have the above-described groove are preferable from the viewpoint of securing the degree of freedom of the mounting location and orientation when the embedded panel 10 is mounted.
  • a screw structure portion or a nut portion for coupling with the leg member 62 is provided on the back surface of the receiving member 61 (the back surface of the surface receiving the embedded panel).
  • a screw structure extending vertically from the back surface of the receiving member 61 is provided.
  • the leg member 62 is a member that supports the receiving member 61.
  • the leg member 62 may have any configuration as long as the height adjuster 60A can exhibit the function of adjusting the height position of the embedded panel 10.
  • the leg member 62 includes at least a rod-shaped member.
  • a separator used as the above-mentioned connecting member S and a member in which two or more separators are connected via connecting fittings 63 and 66 (for example, a turnbuckle or a joint nut) are used.
  • connecting fittings 63 and 66 for example, a turnbuckle or a joint nut
  • one end of the rod-shaped member has a screw structure or a nut for coupling with the receiving member 61. Further, it is preferable that a base having a predetermined shape and structure suitable for contacting an existing floor surface or the like is provided at the other end of the rod-shaped member.
  • one end of the rod-shaped member has a nut portion, and a screw structure extending vertically from the back surface of the receiving member 61 is screwed to the nut portion, and the other end is in contact with the floor surface. It is in contact with and supported by a pyramid-shaped base.
  • the leg member 62 may be a double-sided bolt in a screw hole of a base having a supporting end surface suitable for contacting an existing planar floor surface and a screw hole opening on a side opposite to the end surface. One end of the screw or the bar screw may be screwed in and the other end may form the screw structure.
  • the base having the support end face and the screw hole for example, the fixing tool 30 described above with reference to FIG.
  • the leg member 62 is formed by screwing a double-sided bolt or a bar screw into the screw hole 32 of the nut portion 30B in a state where the end surface 31 of the pedestal portion 30A of the fixing device 30 is in contact with the flat floor surface. You.
  • the leg member 62 may have a configuration in which the other end of the bar-shaped member is embedded in existing concrete (so-called anchor bolt), or the other end of the bar-shaped member may be an iron member such as a steel frame or a reinforcing bar. Or a structure in which the other end of the rod-shaped member is connected to an iron member such as a steel frame or a reinforcing bar via a connection fitting.
  • connecting metal fittings include, for example, a product name “Sepa Grip” sold by Okabe Co., Ltd., a product name “SKA UNIVA” and a product name “Domaster” sold by Kyoei Seisakusho Co., Ltd.
  • FIGS. 7A and 7B exemplarily show a height adjuster 60A when two sets of leg members 62 are provided, and the height adjuster 60A includes one set of leg members 62. May be provided, or three or more pairs of leg members 62 may be provided.
  • the height adjuster 60A shown in FIG. 7 (b) receives two adjacent embedded panels 10 in a connected state and simultaneously performs the height adjusting function of these embedded panels 10.
  • the fact that the form unit X is provided with such a height adjusting tool 60A means that when the concrete structure (for example, a concrete wall 70 or a concrete structure 80 described later) is constructed using the form unit X, the embedded panel 10 is used. It is preferable for accurate positioning with respect to the assembling height.
  • the formwork unit X may further include a height adjuster 60B as shown in FIG.
  • the height adjuster 60B adjusts the height position of the buried panel 10 while connecting two adjacent buried panels 10 assembled at the time of constructing the concrete structure in such a manner that their surfaces 11 intersect at a predetermined angle such as a right angle.
  • a leg member 65 for supporting the receiving member 64.
  • the fact that the form unit X is provided with such a height adjuster 60B means that in the construction of a concrete structure (for example, a concrete wall 70 or a concrete structure 80 to be described later) performed using the form unit X, in an intersecting manner. This is preferable for accurately positioning the assembling height of two adjacent buried panels 10.
  • the receiving member 64 has a groove for receiving an embedded panel that is wider than the thickness of the embedded panel 10.
  • the receiving member 64 may not have a groove for receiving the embedded panel.
  • the receiving member 64 may have a flat plate of various shapes as a buried panel contact portion. The flat plate may have an upwardly folded structure that can abut on the surface 11 or the surface 12 of the embedded panel 10 to help define the position of the embedded panel 10.
  • the receiving member 64 may have an embedded panel supporting rod-shaped member as an embedded panel contact portion.
  • FIG. 7C exemplarily shows a height adjuster 60B in a case where three sets of leg members 65 are provided, and the height adjuster 60B includes one set of leg members 65.
  • a pair of leg members 65 may be provided, or a pair of leg members 65 or more may be provided.
  • the configuration of the leg member 65 in the height adjuster 60B is the same as the configuration of the leg member 65 in the height adjuster 60A.
  • the concrete structure construction method of the present invention is a method of placing concrete using the formwork unit to construct a concrete structure,
  • the fixture 30 is screwed onto the surface of the buried panel 10 (preferably on the surface 11) to assemble the form unit X.
  • the assembled form unit X is arranged at a predetermined position, and the concrete material is filled.
  • a step 3 of filling the formed form with a concrete raw material is a method of placing concrete using the formwork unit to construct a concrete structure.
  • the assembled form unit X is preferably assembled so that the surface 11 including the adhesion improving surface of the embedded panel 10 faces the inside of the concrete filling section 110.
  • the arrangement of the assembled form units X in the step 1 is such that the buried panel 10 of the form unit X has an upward surface, a downward surface, and a section where the concrete raw material is to be filled. Preferably, they are arranged to form at least one surface selected from the side wall surfaces.
  • the surface of the form unit X (preferably, the embedded panel 10 constituting the form unit X is formed).
  • the form unit X can be fixed at a predetermined position by connecting with the connecting member S extending toward the surface 11).
  • the connection member S corresponds to the above-described attachment-location-side connection member.
  • the outside of the form unit X ie, a reinforcing member such as a wooden frame called a crosspiece may be arranged on the side opposite to the concrete filling section side 110).
  • a reinforcing member such as a wooden frame called a crosspiece may be arranged on the side opposite to the concrete filling section side 110.
  • the reinforcing material may be removed after the concrete raw material has hardened, while leaving the form unit X on the concrete structure side.
  • the concrete structure includes a concrete structure including a ridge structure projecting upward, downward, or sideways, and a concrete structure including a protrusion structure projecting upward, downward, or sideways.
  • the concrete structure is, for example, at least one structure selected from the group consisting of concrete steps, sills, beams, window frames, ceilings, floors, columns, walls, retaining walls, parapets, and gantry.
  • a method of forming a formwork when the concrete structure is a concrete structure including a downwardly projecting ridge structure such as a beam will be described below with reference to FIG.
  • a formwork unit X (a fixture 30 fixed to the embedded panel 10 with screws 20) is arranged on the surface of the beam 100, and one end is fixed to the fixture 30 of the arranged formwork unit X and the beam 100. Then, by connecting the connecting member S extending toward the surface 11 of the form unit X, the form unit X can be fixed to form the form.
  • the concrete structure has a special shape (more specifically, a shape in which the upper surface of the columnar structure is chamfered, that is, a truncated pyramid-shaped structure on the upper surface of the columnar structure) among the upwardly protruding convex structures such as a gantry.
  • a method of forming a formwork in the case of a concrete structure including a part having a formed shape) will be described below with reference to FIGS.
  • a reinforcing bar (and an auxiliary steel frame as necessary) 127 is arranged inside the concrete filling section 110.
  • the formwork unit X (the fixture 30 fixed to the embedded panel 10 with screws 20) was placed at a position surrounding the side face of the concrete filling section and at a position covering the top face of the concrete filling section.
  • the fixture 30 of the formwork unit X is connected to the reinforcing bar or the auxiliary steel frame 127. Thereby, the mold unit X can be fixed, and the mold can be formed.
  • the formwork unit X of the present invention after assembling to partition the columnar structure portion and the truncated pyramid-shaped structure portion, the concrete raw material is filled, the columnar structure portion is first formed, and then, Further, the concrete raw material is filled, and the outer periphery of the embedded panel 10 in the formwork unit X fixed as the upper surface of the frustum-shaped pyramid-shaped structure to be formed is defined as a “hit” (that is, a reference of the finished surface of the mortar).
  • the truncated pyramid-shaped structure can be easily formed simply by trimming the side portion (the dotted line portion in the drawing 18) not covered with the formwork unit with a trowel, etc. Can be finished.
  • the form unit X which is easy to assemble and does not need to be removed after the construction is used, the work, time and cost required for the construction of the concrete structure are reduced. Can be reduced.
  • the concrete structure includes a surface other than the upward surface, such as a wall, a ceiling, or a beam, that is, a downward surface or a side wall surface, in the conventional construction method, the concrete is easily peeled off when applied thickly at once.
  • a concrete structure having a predetermined thickness can be formed only by once filling concrete into a form unit that is firmly fixed to a foundation portion of the concrete structure or a steel frame forming a framework.
  • the concrete structure after hardening, if the concrete structure includes side walls such as walls, or downwards such as the bottom of ceilings or beams, the concrete structure collapses due to an earthquake or the like according to the conventional construction method.
  • a form unit firmly fixed to a steel frame or the like forming a foundation or a frame covers the surface of the concrete structure. Therefore, it is possible to prevent the concrete structure from collapsing due to an earthquake or the like.
  • the formwork unit X does not need to be removed after construction, for example, the concrete structure having a stepped portion (one upward surface (first upward surface) and In the case of a step structure comprising another upward surface (second upward surface) at a higher level and a side wall surface between the two upward surfaces, the form unit X for defining the side wall surface Can be assembled without providing a gap between the first upwardly facing surface. Therefore, it is possible to prevent the leakage of the concrete raw material from the gap, and it is not necessary to scrape the surplus portion formed by the leaked concrete raw material and to repair the shaved portion which is performed as necessary thereafter, and the work required for the construction -Time and cost can be reduced.
  • the strength of the concrete structure can be maintained without providing a reinforcing bar as densely as before. For this reason, by lowering the installation density of the reinforcing bars, it is possible to smoothly fill the form material with the concrete raw material, and compaction using a push rod, a rod-shaped vibrator, or a form vibrator is also facilitated. Thereby, generation of a bean plate (so-called junka) can be suppressed in the concrete structure, and a concrete structure excellent in strength and aesthetic appearance can be formed.
  • FIG. 8 shows an example of the concrete structure construction method of the present invention.
  • This method is a method for constructing a concrete wall 70 as shown in FIG. 8 (d) with a so-called rising step in a water return portion.
  • the following formwork assembling step and the first concrete includes a setting step, a second concrete placing step, and a form removing step (in FIG. 8, each step is represented by a cross-sectional view).
  • the concrete wall 70 to be formed has a step structure (a rising step in the water return portion) between the upper surface 71 and the upper surface 72 located thereabove.
  • a mold Y is formed as shown in FIG. Specifically, at the place where the concrete wall 70 is formed, reinforcing bars such as vertical bars and horizontal bars are arranged, and thereafter, a plurality of panels are assembled, and a formwork Y that defines a section where the concrete raw material is to be filled is formed.
  • a plurality of panels to be assembled include at least one embedded panel P in the above-described formwork unit X, which forms a side wall surface between the removed panel P and the upper surface 71 of the concrete wall 70 to be formed.
  • Panel 10 is included.
  • a necessary number of the above-described through holes 13 are formed in the buried panel 10 to be used before the assembling operation.
  • the assembling work is performed on the embedded panel 10 having the through holes 13.
  • two adjacent buried panels 10 may be assembled in such a manner that the two embedded panels 10 are connected together with the above-described connector 50A and connector 50B.
  • the embedded panel 10 may be assembled in such a manner that the height is adjusted together with the height adjuster 60A and the height adjuster 60B described above.
  • the embedded panel 10 in the assembled state has, for example, as shown in FIG. 3, a surface 11 including an adhesion improving surface forms an inner surface facing the concrete material filling section.
  • the above-described fixing device 30 in the formwork unit X has the screw hole 32 of the fixing device 30 and the embedded panel 10 with the end surface 31 for abutting the embedded panel applied to the surface 11 (inner surface) of the embedded panel 10. Are located at positions where communication with the through holes 13 is possible.
  • the screw 20 of the form unit X is inserted into the through hole 13 from the surface 12 of the embedded panel 10 and then screwed into the screw hole 32 of the fixture 30 on the surface 11. I have.
  • the fixing tool 30 is connected to a screw structure at an end of the separator S, which is an assembly-location-side connecting member.
  • the buried panel 10 is assembled so that the lower end of the buried panel 10 is located at the same position or lower than the position where the upper surface 71 of the concrete wall 70 is to be formed in the vertical direction.
  • the embedment panel 10 of the form unit X is assembled by the above-described complex cooperation of the components of the form unit X.
  • the adhesion-improved surface on the surface 11 of the embedded panel 10 is the above-described uneven surface or the mechanically roughened surface (that is, when the fiber-reinforced cement base is exposed on the surface 11 of the embedded panel 10), or If the effect of the preceding water absorption adjustment is insufficient even if the adhesion improving surface on the surface 11 of the embedded panel 10 is the above-mentioned mortar hardened material layer surface, before assembling the embedded panel 10 and before pouring concrete material. In some cases, it is necessary to adjust the water absorption of the buried panel 10.
  • the water absorption adjusting means include spraying of water on at least the surface 11 of the embedded panel 10 and application of a water absorption adjusting agent on the surface 11 of the embedded panel 10.
  • the specific water absorption adjusting means is the same as the water absorption adjusting means described above regarding the water absorption adjustment before applying the polymer cement mortar or the cationic mortar to the fiber reinforced cement board.
  • the water absorption adjustment by spraying water on the buried panel 10 is preferably performed immediately before assembly of the buried panel 10 at a building site and / or in consideration of the amount of moisture that evaporates by the time of placing the concrete raw material. Performed once or several times after assembly.
  • the water absorption adjustment by applying the water absorption adjusting agent to the buried panel 10 can be performed at any time after the production of the buried panel 10 and before the concrete is poured at the building site.
  • one water absorption adjustment may be performed, the water absorption adjustment may be performed a plurality of times by the same means, or a plurality of different means may be performed. May be adjusted once or plural times for each means.
  • a first concrete placing step is performed. Specifically, in the concrete material filling section formed by the formwork Y, the concrete material M is transferred to a height position L1 (first height position) corresponding to the height at which the above-described upper surface 71 is formed. Driving supply. Then, after compaction for densely filling the poured concrete raw material M and surface finishing of the upper surface 71 with a trowel or the like as necessary, the concrete M is cured through curing. Compaction can be performed using a push rod, a rod vibrator, or a form vibrator.
  • a second concrete placing step is performed. Specifically, in the concrete material filling section formed by the formwork Y, the concrete material M is further supplied to a height position L2 (second height position) corresponding to the height at which the above-described upper surface 72 is formed. . Thereafter, the concrete M is hardened through hardening after compaction for densely filling the poured concrete raw material M and surface finishing of the upper surface 72 with a trowel or the like as necessary. As a result, the embedded panel 10 of the form unit X is integrated with the concrete wall 70, and forms a side wall between the upper surface 71 and the upper surface 72 in the step structure portion.
  • a mold removing step is performed. Specifically, while leaving the embedded panel 10 of the form unit X on the concrete wall 70 side, the removal panel P is removed and the form Y is dismantled.
  • the buried panel 10 is integrated with the concrete wall 70 to be formed, and is formed between the upper surface 71 and the upper surface 72 at the step. Side wall surface.
  • the embedded panel 10 of the formwork unit X does not require removal work after construction.
  • the formwork unit X including such a buried panel 10 is suitable for suppressing work, time, and cost required for constructing a concrete wall 70 which is a concrete structure with a step portion.
  • the embedded panel 10 of the form unit X does not require the removal work after the construction as described above, and therefore is suitable for assembling sufficiently firmly when forming the form Y defining the concrete material filling section.
  • Such a buried panel 10 is suitable for suppressing the occurrence of distortion at the time of placing concrete, and is therefore suitable for avoiding repair work required when the detached panel P is distorted at the time of placing concrete.
  • the formwork unit X including such a buried panel 10 is suitable for suppressing work, time, and cost required for constructing a concrete wall 70 which is a concrete structure with a step portion.
  • the embedded panel 10 of the formwork unit X does not require the removal work after the construction as described above, the embedded panel 10 in the vertical direction is the same as or below the position where the upper surface 71 of the concrete wall 70 is to be formed. It is suitable for assembling the buried panel 10 so that the lower end is located.
  • the formwork unit X having such a buried panel 10 is suitable for avoiding the formation of the surplus concrete portion described above with reference to the prior art, and works for scraping such a surplus portion and thereafter performing as needed. This is suitable for avoiding the repair work of the shaved portion, and is therefore suitable for suppressing the work, time and cost required for constructing the concrete wall 70 which is a concrete structure with a step.
  • the buried panel 10 of the form unit X includes, as described above, the surface 11 having an adhesion improving surface suitable for joining with the concrete after hardening. Such a configuration is suitable for suppressing the peeling of the buried panel 10 from the cast concrete.
  • the form unit X described above is suitable for efficiently forming the concrete wall 70 that is a concrete structure having a step structure.
  • FIG. 9 shows another concrete structure construction method according to an embodiment of the present invention.
  • This method is a method for constructing a concrete structure 80 as shown in FIG. 9D with a so-called floor step at a wiring cable installation location or a bathroom construction location.
  • the following formwork is used. It includes an assembling step, a first concrete placing step, a second concrete placing step, and a form removing step (in FIG. 9, each step is represented by a sectional view).
  • the concrete structure 80 to be formed has a step structure (floor step) between the upper surface 81 and the upper surface 82 located above the upper surface 81.
  • a mold Z is formed as shown in FIG. Specifically, at the place where the concrete structure 80 is formed, after reinforcing bars such as vertical bars and horizontal bars are arranged, a plurality of panels are assembled, and a formwork Z that defines a section where the concrete raw material is to be filled is provided.
  • the plurality of panels to be assembled include the removal panel P and at least one sheet of the above-described formwork unit X, which forms a side wall between the upper surface 81 and the upper surface 82 of the concrete structure 80 to be formed.
  • a buried panel 10 is included. A necessary number of through holes 13 are formed in the buried panel 10 to be used by the time of assembly work. Then, the assembling work is performed on the embedded panel 10 having the through holes 13.
  • two adjacent buried panels 10 may be assembled in such a manner that the two embedded panels 10 are connected together with the above-described connector 50A and connector 50B. Further, the embedded panel 10 may be assembled in such a manner that the height is adjusted together with the height adjuster 60A and the height adjuster 60B described above.
  • the surface 11 including the adhesion improving surface forms the inner surface facing the concrete material filling section.
  • the fixing tool 30 of the formwork unit X has the screw hole 32 of the fixing tool 30 and the embedded panel 30 in a state where the end face 31 for abutting the embedded panel is applied to the surface 11 (inner surface) of the embedded panel 10.
  • the ten through-holes 13 are at positions where they can communicate with each other.
  • the above-mentioned screw 20 of the formwork unit X is inserted into the through hole 13 from the surface 12 side of the embedded panel 10 and screwed into the screw hole 32 of the fixture 30 on the surface 11 side.
  • the fixing tool 30 is connected to a screw structure at an end of the separator S, which is an assembly-location-side connecting member.
  • the buried panel 10 is assembled so that the lower end of the buried panel 10 is located at the same position as or below the upper surface 81 of the concrete structure 80 in the vertical direction.
  • the embedment panel 10 of the form unit X is assembled by the above-described complex cooperation of the components of the form unit X.
  • the adhesion-improved surface on the surface 11 of the embedded panel 10 is the above-mentioned uneven surface or the mechanically roughened surface, or the adhesion-improved surface on the surface 11 of the embedded panel 10 is the above-mentioned mortar cured material layer surface.
  • the water absorption adjustment of the embedded panel 10 may be required after the embedded panel 10 is assembled and before the concrete material is poured.
  • the specific method of adjusting the water absorption is the same as described above regarding the specific method of adjusting the water absorption in the process of constructing the concrete wall 70.
  • a first concrete placing step is performed. Specifically, in the concrete material filling section formed by the formwork Z, the concrete material M is transferred to a height position L1 (first height position) corresponding to the height at which the above-described upper surface 81 is formed. Driving supply. Thereafter, the concrete M is hardened through curing after compaction for densely filling the poured concrete raw material M and surface finishing of the upper surface 81 with a trowel or the like as necessary. Compaction can be performed using a push rod, a rod vibrator, or a form vibrator.
  • a second concrete placing step is performed. More specifically, in the concrete material filling section formed by the formwork Z, the concrete material M is further supplied to a height position L2 (second height position) corresponding to the height at which the above-described upper surface 82 is formed. . Thereafter, the concrete M is hardened through hardening after compaction for densely filling the poured concrete raw material M and surface finishing of the upper surface 82 with a trowel or the like as necessary.
  • the embedded panel 10 of the form unit X is integrated with the concrete structure 80, and forms a side wall between the upper surface 81 and the upper surface 82 in the step structure portion.
  • a mold removing step is performed. Specifically, while leaving the embedded panel 10 of the form unit X on the side of the concrete structure 80, the removal panel P is removed and the form Z is dismantled.
  • the concrete structure 80 having a floor step can be constructed.
  • the buried panel 10 is integrated with the concrete structure 80 to be formed, and the upper surface 81 and the upper surface 82 at the step portion are formed. Between the side walls.
  • the embedded panel 10 of the formwork unit X does not require removal work after construction.
  • the formwork unit X including such a buried panel 10 is suitable for suppressing work, time, and cost required for constructing a concrete structure 80 that is a concrete structure with a step portion.
  • the embedded panel 10 of the form unit X does not require the removal work after the construction as described above, and therefore is suitable for assembling sufficiently firmly at the time of forming the form Z defining the concrete material filling section.
  • Such a buried panel 10 is suitable for suppressing the occurrence of distortion at the time of placing concrete, and thus avoids the repair work required when the detached panel P is distorted at the time of placing concrete in the conventional construction method. Suitable for.
  • the formwork unit X including such a buried panel 10 is suitable for suppressing work, time, and cost required for constructing a concrete structure 80 that is a concrete structure with a step portion.
  • the embedded panel 10 of the formwork unit X does not require the removal work after the construction as described above, the embedded panel 10 is the same as or below the planned upper surface 81 formation position of the concrete structure 80 in the vertical direction. It is suitable for assembling the buried panel 10 so that the lower end 10 is located.
  • the formwork unit X provided with such a buried panel 10 is suitable for avoiding the formation of the surplus concrete described above with respect to the prior art, and for cutting off such surplus and performing the subsequent operations as necessary. This is suitable for avoiding the repair work of the shaved area, and is therefore suitable for suppressing the work, time, and cost required for the construction of the concrete structure 80 which is the concrete structure with a step portion.
  • the buried panel 10 of the form unit X includes, as described above, the surface 11 having an adhesion improving surface suitable for joining with the concrete after hardening. Such a configuration is suitable for suppressing the peeling of the buried panel 10 from the cast concrete.
  • the above-described form unit X is suitable for efficiently forming the concrete structure 80 having the step structure.
  • FIG. 10 partially shows a modification of the concrete structure construction method shown in FIGS. 8 and 9.
  • the concrete structure to be formed includes a ridge structure portion as the step structure, in the above-described formwork assembling step of the concrete structure construction method shown in FIGS. 8 and 9, as shown in FIG. Assemble a pair of buried panels 10 that are spaced apart from each other, and assemble them to the required number of sets and the ridge structure portion forming portions (FIG. 10A shows only a pair of buried panels 10 in the formwork).
  • the concrete structure to be formed in the present modification has, for example, as shown in FIG. 10B, a pair of side wall surfaces facing opposite sides between the upper surface 91 and the upper surface 92 located above the upper surface 91.
  • the ridge structure portion 93 is included.
  • a concrete structure including the ridge structure portion 93 can be formed.
  • the formed ridge structure portion 93 is accompanied by the buried panel 10 forming the side wall surface.
  • FIG. 11 partially shows another modification of the concrete structure construction method shown in FIGS. 8 and 9.
  • the concrete structure to be formed includes a convex structure as the step structure, in the formwork assembling step of the concrete structure construction method shown in FIGS. 8 and 9, a part or a plurality of side walls of the convex structure is formed.
  • One or two or more buried panels 10 to make up the whole are assembled at the protruding structure portion.
  • FIG. 11A exemplarily shows a state in which four buried panels 10 for forming all the side walls forming the entire circumference of the convex structure portion are assembled at the convex structure portion forming portion.
  • 11 (a) shows only one set of buried panels 10 in the formwork). As shown in FIG.
  • the concrete structure to be formed in the present modified example has a convex structure having a plurality of side walls that form an entire circumference between an upper surface 91 and an upper surface 92 higher than the upper surface 91.
  • a part 94 is included.
  • the concrete structure repair method of the present invention is a method of repairing a concrete structure by placing concrete using the formwork unit X, The fixture 30 is screwed onto the surface of the buried panel 10 (preferably on the surface 11) to assemble the form unit X.
  • the fixture 30 of the assembled form unit X and the repaired surface of the concrete structure A connecting step S ′ for connecting the connecting member S extending in the surface direction of the form unit to form a form; Step 2 ′ of filling the formed form with a concrete raw material.
  • Step 1 will be described with reference to FIG.
  • the form unit X is arranged to face the repaired surface 103 of the concrete structure (the window frame 102 in FIG. 19) and the concrete filling section 110, and is connected to the fixture 30 of the form unit X.
  • the mold unit X can be fixed to form a mold.
  • connection member S is a member corresponding to the above-described connection portion side connection member, and one end of the connection member S is attached to the embedded panel 10 of the formwork unit X by a concrete structure. It is fixed to the refurbishment surface 103 and the other end extends in the direction of the surface 11 of the formwork unit X.
  • one end of the connecting member S is embedded in the repaired surface 103 of the concrete structure, and a so-called anchor bolt is used.
  • one end of the connecting member S may be welded and fixed to an iron member such as a steel frame or a reinforcing bar, or the other end of the rod-shaped member may be connected to an iron member such as a steel frame or a reinforcing bar via a connecting bracket. It may be connected to a member.
  • a hook is attached to the other end of the connecting member S, or when the other end of the connecting member S is bent in a hook shape, the hook exists inside the concrete filling section 110. It may be connected by hooking on a steel member such as a steel frame or a reinforcing bar or another connecting member S.
  • the form unit X which is easy to assemble and does not need to be removed after construction is used, the work, time, and cost required for repair of the concrete structure are reduced. Can be reduced.
  • the conventional construction method may cause peeling if the concrete is applied thickly at one time.
  • the method of thickening by the method of coating after hardening was adopted, according to the method of repairing a concrete structure of the present invention, the concrete structure was firmly fixed to a steel frame or the like forming a base portion or a framework. It is possible to form a concrete structure renovation part having a predetermined thickness by only once filling concrete into the concrete filling section formed by the formwork unit X.
  • the conventional construction method uses a concrete structure repaired part after hardening due to an earthquake or the like.
  • the form unit X which is firmly fixed to a steel frame or the like forming a foundation portion or a framework is used. Covers the surface of the concrete structure, so that the repaired portion can be prevented from peeling or collapsing due to an earthquake or the like.
  • the “concrete structure renovation section” is a portion formed by renovation on the renovated surface of the concrete structure, and the concrete structure renovation section formed by the concrete structure renovation method of the present invention is , Formwork unit X and concrete.
  • the strength of the repaired portion can be maintained even if the reinforcing bars are not arranged as densely as before or the reinforcing bars are omitted. Can be. Therefore, by reducing the reinforcing bar density or omitting the reinforcing bars, the concrete material can be smoothly filled into the formwork, and the compaction performed using a ram, a rod-shaped vibrator, or a form vibrator. Also becomes easier. Thereby, generation of a bean plate (so-called “junka”) in the repaired portion can be suppressed, and a beautiful and firm finish can be achieved.
  • the concrete structure of the present invention is characterized in that the embedded panel 10 included in the form unit X forms at least one surface selected from the upper surface, the lower surface, and the side surface of the concrete structure.
  • the upper surface includes an oblique upper surface
  • the lower surface includes an oblique lower surface.
  • the concrete structure of the present invention includes a concrete structure including a ridge structure projecting upward, downward, or sideways, and a concrete structure including a protrusion structure projecting upward, downward, or sideways.
  • the concrete structure of the present invention is, for example, at least one kind of concrete structure selected from stairs, sills, beams, window frames, ceilings, floors, columns, walls, retaining walls, parapets, and gantry. .
  • At least one surface selected from the upper surface, the lower surface, and the side surface of the concrete structure includes a form unit X that is firmly fixed to a steel frame or the like forming a foundation portion or a framework of the concrete structure. Since the concrete is covered, there is no possibility that the concrete will be peeled off, and it is possible to prevent the concrete from falling due to an earthquake or the like. Also, the surface 12 of the embedded panel 10 included in the formwork unit X is exposed on the surface of the concrete structure, but when the surface 12 is provided with, for example, a decorative surface or the like, it has a beautiful appearance.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

L'invention concerne : une unité de coffrage appropriée pour former efficacement une structure en béton ; et un procédé de fabrication. Cette unité de coffrage, qui est une unité de coffrage destinée à verser du béton, est pourvue : d'au moins un panneau intégré ; et d'au moins un dispositif de fixation qui a une face d'extrémité destinée à venir en butée contre le panneau intégré, est vissé et fixé au niveau de la face d'extrémité au panneau intégré, et peut être relié à un élément de liaison côté emplacement d'assemblage. Il est souhaitable que les faces installées face à l'intérieur d'une cloison à remplissage en béton parmi les faces des panneaux intégrés comprennent des faces présentant une adhérence améliorée.
PCT/JP2019/025565 2018-06-29 2019-06-27 Unité de coffrage et procédé de fabrication d'une structure en béton Ceased WO2020004540A1 (fr)

Priority Applications (4)

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JP2020527626A JP7017213B2 (ja) 2018-06-29 2019-06-27 型枠ユニットおよびコンクリート構造物施工方法
CN201980043690.XA CN112352084B (zh) 2018-06-29 2019-06-27 型框单元及混凝土结构物施工方法
JP2019224809A JP2021006697A (ja) 2018-06-29 2019-12-12 型枠ユニットおよびコンクリート構造物施工方法
JP2020219322A JP6968375B2 (ja) 2018-06-29 2020-12-28 型枠ユニットおよびコンクリート構造物施工方法

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JP2018-124109 2018-06-29
JP2018124109 2018-06-29
PCT/JP2019/017610 WO2020003726A1 (fr) 2018-06-29 2019-04-25 Unité de cadre de moule pour section étagée de béton et procédé de construction de structure en béton
JPPCT/JP2019/017610 2019-04-25

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PCT/JP2019/025565 Ceased WO2020004540A1 (fr) 2018-06-29 2019-06-27 Unité de coffrage et procédé de fabrication d'une structure en béton

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JP2021193249A (ja) * 2020-06-08 2021-12-23 ダイセルミライズ株式会社 型枠ユニットおよびコンクリート構造物施工方法
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JP7575306B2 (ja) 2021-03-15 2024-10-29 ダイセルミライズ株式会社 段差構造を有するコンクリート構造物の施工方法および型枠ユニット
CN113235954B (zh) * 2021-05-31 2022-05-17 江苏永创建设有限公司 滑动支座垫板用定位架和滑动支座楼梯的施工方法
KR102844220B1 (ko) * 2023-07-26 2025-08-07 롯데건설 주식회사 철근 돌출 대응형 프리캐스트용 몰드 시스템

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JPWO2020004540A1 (ja) 2021-07-15
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CN112352084A (zh) 2021-02-09
JP6968375B2 (ja) 2021-11-17
WO2020003726A1 (fr) 2020-01-02
CN112352084B (zh) 2022-09-06

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