JPH074032A - Buried form for wall construction and construction method of buried form wall using the form - Google Patents

Abstract

PURPOSE:To increase the size of a form so that a wall construction buried form comprising a plurality of form materials may be erected simply, and in a short period, and reduce the weight so as to attain the reduction in the size of a crane required for the erection of the form and allow the form material to contribute to the upgraded strength of a concrete structure. CONSTITUTION:When constructing a wall by lining up a precast-made flat- shaped form material 6 in the width direction, a projected part (a) is formed on the inner surface of a form material 7. A reinforcing member 15 is installed all over the outer surface of a plurality of the form materials 7 by way of a coupling means 13 which is penetrated through the forms 7 and fixed therewith so that the forms 7 may be integrated into one piece by field preassembling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded formwork for constructing a wall, which is formed by connecting precast flat formwork members in the width direction, and a method for constructing an embedded formwork wall using the formwork.

[0002]

2. Description of the Related Art Compared with the construction of wooden concrete panels which are thrown away once or several times, there is less waste of resources, and the construction period can be shortened by leaving the precast formwork exposed. Therefore, embedded formwork tends to be widely used for building wall of buildings.

Construction of a wall by this buried formwork is generally performed as follows. That is, while constructing wall reinforcements in the wall construction part, on both sides of the wall width direction sandwiching the wall reinforcements, one by one a flat plate form material of short width whose upper and lower sides correspond to the wall height. Formwork materials that are butt-mounted in the width direction and that face each other in the wall width direction are connected via a space regulator that regulates the distance between the two, and further, the formwork material is subjected to lateral pressure during concrete pouring. In order to withstand the above, a reinforcing member generally referred to as a joist is arranged vertically and horizontally on the outer surface of an embedded formwork composed of a plurality of formwork members arranged in the width direction, and the wall reinforcement The means for pouring concrete is used so as to bury it.

[0004]

However, in the above means, the work of building the mold materials one by one is very troublesome and the workability is poor, and a large amount of reinforcing members and their connecting means are required. As a result, it takes a lot of time and labor to assemble the embedded formwork. In addition, the embedded formwork and the concrete that is placed inside it are not well-known to each other and the connection between the two is insufficient. There was a problem in that.

The present invention improves the familiarity of the buried formwork with concrete by the rational improvement taking advantage of the fact that the formwork material is made of precast, and at the same time, the material necessary for the installation work of the formwork, that is, An embedded mold for wall construction that reduces the amount of the reinforcing member and its connecting means to half, and simplifies the installation work of the embedded formwork on one side in the wall width direction, and shortens the construction period. It is an object of the present invention to provide a frame, and further to provide a method for constructing a buried formwork wall that is preferably implemented using the buried formwork.

[0006]

In order to achieve the above object, in the first aspect of the present invention, the ridges are formed on the inner surface of the precast mold material at predetermined intervals in the width direction. A reinforcing member is provided on the outer surface of a plurality of materials through a coupling means that is fixed by penetrating the frame material, and the plurality of frame materials are integrated by a ground structure to build a wall. The feature is that the embedded formwork is constructed.

In the method for constructing a buried formwork wall according to the second aspect of the invention, the buried formwork for constructing a wall obtained in the first aspect of the invention is built on one side in the wall width direction of the wall construction part, while the wall of the wall construction part is constructed. On the other side in the width direction, one precast flat plate-shaped frame material having ridges formed at predetermined intervals in the width direction on the inner surface is sequentially built up one by one, and a plurality of these frame materials are used. The embedded formwork for wall construction is integrated by the reinforcing member located on the outer surface in the width direction thereof and the connecting means fixed through the formwork material, and further installed between both embedded formworks. It is characterized in that concrete is placed so as to bury the wall reinforcements that have been removed.

[0008]

According to the characteristic construction of the first aspect of the invention, a large-scale embedded mold for wall construction in which a plurality of frame members are grounded can be obtained, and
The ridges formed on each of the mold members function as the same strength members as the reinforcing members conventionally arranged in the direction of the ridges, and the ridges also form the frame material and thus the embedded formwork. And acts to increase the adhesion between cast-in-place concrete.

According to the construction method of the second invention, the erection of the wall construction buried formwork on one side in the wall width direction is immediately performed by the erection of the prefabricated buried formwork obtained according to the first invention. Achieved, after that, the building members are built one by one on the other side in the width direction of the wall, and the reinforcing members are joined by the connecting means for forming the embedded formwork by integrating a plurality of the building frame members. An embedded formwork wall is constructed by mounting and placing concrete between the embedded formworks.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a buried formwork structure of a wall with a beam for an outer wall of a building. More specifically, a pair of wall-embedded molds 2 and 3 each of which is provided with a beam side part mold material 1 of which one is flat, and a separate body from which are joined to the other wall-embedded mold 3 1 shows a part of an embedded mold 5 for a beam provided with a mold material 4 for a corner of a beam bottom and an embedded mold 6 for a floor.

The above-mentioned buried molds 2 and 3 for walls are made up of plate-shaped mold members 7 and 8 made of precast, which are formed by vacuum extrusion of short fiber reinforced mortar, and are connected in the width direction. The formwork material 7 of the embedded formwork 2 is formed to be longer than the other formwork material 8 by the length of the beam side formwork material 1 in addition to the dimension equal to or larger than the floor slab thickness.

Then, as shown in FIG. 2, each form material 7, 8
The reinforcing projections a are formed on the inner surface of the sheet at predetermined intervals in the width direction and extend over the entire length in the longitudinal direction, and as shown in a partially enlarged view of FIG. The shape is inverted trapezoid in order to increase the adhesion with cast-in-place concrete, and further, in order to prevent displacement of the formwork materials and leakage of concrete, the joint parts of the formwork materials are mutually connected. The meshing uneven portions b and c are formed.

One of the wall-embedded molds 2 provided with the beam side mold material 1 in series has a large mold structure which is integrated by framing as follows, for example. That is, the form material 7
A bolt 9 with a flange d that penetrates the ridge a, a female screw member 10 that is screwed into the bolt 9, a retainer 11 that is loosely fitted to the bolt 9, and a fixing nut 12 that tightens the retainer 11. FIG. 3 shows a state in which the connecting means 13 is set at a predetermined position of the form material 7 so that the pressing tool 11 is located on the outer surface, and a plurality of the form material 7 are sequentially arranged in the width direction. As described above, the outer surface of the plurality of mold members is placed on the spacer 14 and the concavo-convex portions b and c of the adjacent mold members 7 are abutted and meshed with each other via an adhesive. 7, a member 15 for reinforcing the form material is arranged on the outer surface thereof, and the reinforcing member 15 is pressed and fixed between the retainer 11 of the coupling means 13 and the form member 7 to form a plurality of the above-mentioned plurality of sheets. The form material 7 is integrated.

An example of the procedure for constructing the wall with beams will be described below. First, as shown in FIG. 4, the above-mentioned one wall embedded formwork 2 configured in a large formwork structure was built on one side (outdoor side) in the wall width direction of the wall construction part using a lifting machine such as a crane. In addition, the wall reinforcement 16 is installed in the wall construction part, and the frame interval regulator 17 made of a bolt is set on the female screw member 10 of the coupling means 13 through the reinforcement gap. Another female screw member 18 is attached to the end of 17.

Next, the other buried mold 3 for the wall is built on the other side in the wall width direction of the wall building portion. As shown in FIGS. Form material 8 toward the 16 side
One by one to the other side in the wall width direction, and through the hole formed in the ridge a of the form member 8 thereof, the other female screw member 18
A bolt 19 with a flange e is screwed onto the base plate, and the concavo-convex parts b and c of the adjacent frame members 8 are sequentially butted and meshed with each other via an adhesive.

Then, a member 20 for reinforcing the formwork material is arranged on the outer surface of the plurality of formwork materials 7, and
The reinforcing member 20 is fixed by the connecting means 23 composed of the retainer 21 and the nut 22 which are loosely fitted to the bolt 19, so that the plurality of mold members 8 are integrated with each other. The building of the wall-embedded form 3 on the other side in the wall width direction of the part is completed.

In order to cope with the unevenness of the floor surface, as shown in FIG. 1, the level adjusting packing f is fixed to the concrete surface with, for example, concrete nails h.
And, finally, the pier 24 for pressure reception extending over the lower end of the form material 8 and the packing f is fixed to the concrete nail i.
It is fixed on the concrete surface by.

Next, as shown in FIG. 1, buried formwork 5 and 6 for beams and floors are installed, and reinforcements 25 and 26 for beams and floors are arranged.
In order to install the beam embedded formwork 5 at a predetermined position, the pier 2 is previously attached to the upper outer surface of the wall embedded formwork 3.
7 is provided, and a beam 28 is provided in the beam embedded formwork 5 to support the floor embedded formwork 6. These piers 27, 28
Is fixed to the buried formwork 5, 6 by a connecting means 29 having the same structure as the above-mentioned connecting means 13.

The embedded formwork 5 for a beam is constructed by erected and erected a beam-side formwork material 30 having a longitudinal projection j formed on the inner surface thereof to a formwork 4 for a beam bottom corner. The corner frame member 4 is supported by the pier 27 while the end edge of the corner frame member 4 is brought into contact with the upper outer surface of the wall-embedded frame 3, and the above-mentioned coupling means 13, By means of the coupling means 31, 32 having the same structure as 23, the reinforcing member 33
And the wall embedded formwork 2 are integrated with each other, and the floor embedded formwork 6 is supported by the beam 28 on the beam embedded formwork 5 side, and these are appropriately nailed to fix the beam reinforcement. 25 and floor reinforcement 26 are constructed.

The wall, beam and floor reinforcements are arranged on the wall embedded molds 2 and 3 and the beam embedded molds 1 and 5 and on the floor embedded mold 6. Concrete is placed in a state of embedding 16, 25, 26, and then the coupling means 13, 23, 29, 31, 32 are dismantled after the concrete is cured, and the reinforcing members 15, 20, 33 are removed. By doing so, beamed walls and floor slabs are constructed.

According to the above configuration, one forms the frame members 7 and 8 of the pillar-embedded molds 2 and 3 in which the beam side part frame member 1 is continuously provided, and the beam-embedded mold form 5. On the inner surface of each of the corner mold member 4 and the beam side mold member 30, a plurality of ridges a,
By providing j, the cast-in-place concrete is firmly adhered to the inner surfaces of the form members 4, 7, 8, 30 through the ridges a, j, and the embedded form 2, 3 and 5 contribute to increase the strength of the concrete structure.

Further, conventionally, reinforcement members were vertically and horizontally joined to the outer surfaces of the wall-mounting molds 2 and 3 so as to withstand the lateral pressure at the time of placing concrete. Since the protruding portion a can have a reinforcing function in place of the reinforcing member, the amount of materials (reinforcing member and its connecting means) required for installing and constructing the mold can be reduced by half, and the buried mold can be used. A few assembly and installation work can be simplified and the construction period can be shortened.

Furthermore, since one of the wall-mounted molds 2 is grounded beforehand and lifted and installed at a predetermined location, if this grounding work is performed in a place where it does not interfere with other work. , While avoiding the intersection with various works, for example, wall reinforcement 16
The groundwork can be performed in parallel with the construction, and thus, the embedded formwork 2 for a wall can be easily built in a predetermined place without trouble. And at this time, since the construction materials have been halved and the weight of the wall-mounting formwork 2 has been reduced as described above, it is possible to use a small lifting machine such as a crane for lifting this. Yes, or
If you want to use the large-scale hoisting machine that was previously required,
It is possible to further increase the size of the wall-mounting formwork 2.

In the above embodiments, the construction of the wall with beams has been described. However, for example, a wall for the doorway or a wall without beams in which the width center of the beam coincides with the width center of the wall is an object of the present invention. It is possible to

When a projecting corner is provided on the outer wall of the building, it is desirable to connect the wall-embedded molds 2 and 2 by the connecting means 34 shown in FIG. That is, the through holes formed in the vicinity of the ends of the wall-mounted molds 2 and 2 that are abutted in an L-shape are inserted into the through holes formed respectively from the outside, and the bolts 36 with the flange 36a are provided.
, And the male screw portion at the tip thereof is screwed into the nut member 37 arranged on the inner surface side of the mold to preliminarily tighten and fix the bolt 36 with the collar 36a at a predetermined position of the mold, as shown in FIG. A metal square fastener 3 which is bent in an L shape and has notches 35a and 35b formed at both ends.
5 is arranged on the outer surface side of the wall-embedded molds 2 and 2 butted in an L-shape, and the square fastener 35 is tightened by a nut 38 screwed to the male screw portion on the other end of the bolt 36 with the collar 36a. Fix it. In this embodiment, as the nut member 37, a resin-made wooden concrete (a resin-made cone in which a metal screw cylinder is embedded) used for mounting the form separator is used. It is desirable that the wall-mounted molds 2 and 2 that are abutted in an L-shape be fixed by an adhesive agent in addition to the above-mentioned connecting means 34.

[0026]

As described above, according to the first aspect of the present invention, a large-sized buried formwork for building a wall is constructed by avoiding the intersection with various works and, for example, by constructing a wall in parallel with the construction of wall reinforcement. Therefore, the buried formwork for a wall can be easily and easily built in a short construction period.

On the other hand, by forming a plurality of ridges on the inner surface of the form material, it becomes possible to increase the adhesive force of the form material, and thus the buried form, to the cast-in-place concrete, and moreover, the ridges. The part has the function of replacing one of the vertical and horizontal reinforcing members required for the pressure resistance when placing concrete, so the amount of construction materials used can be halved, thus increasing the size of the buried wall. Since the weight of the formwork is reduced, it is possible to not only downsize the lifting machine but also significantly reduce the wall construction cost.

In the second aspect of the present invention, since the wall-embedded formwork on one side in the wall width direction is enlarged by the groundwork, the erection of this can be achieved immediately without any trouble, and after that, to the other side in the wall width direction. Incorporation of formwork materials one by one, attachment of reinforcing members by a connecting means for constructing an embedded formwork by integrating a plurality of the formwork materials, and concrete between embedded formworks By laying, the buried formwork wall will be constructed, which can significantly reduce the cost while shortening the construction period.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embedded formwork for constructing a wall with beams.

FIG. 2 is a plan view of a formwork material forming an embedded formwork for a wall.

FIG. 3 is a plan view showing a grounded state of one wall embedded formwork.

FIG. 4 is an explanatory view showing a state of erection of one wall embedded formwork and construction of wall reinforcement.

FIG. 5 is an explanatory diagram of building the other wall embedded formwork and the beam embedded formwork.

FIG. 6 is a detailed view of the connecting means at the outer corner of the outer wall.

7 is a perspective view of a square fastener used in the connecting means shown in FIG.

[Explanation of symbols]

2, 3 ... Embedded formwork for wall, 7, 8 ... Formwork material, 13, 23 ...
Coupling means, 15, 20 ... Reinforcing member, 16 ... Wall reinforcement, a
… Ridge section.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Tabata 32-32-1, Shiba, Minato-ku, Tokyo Haseko Corporation

Claims (2)

[Claims] 1. An embedded formwork for constructing a wall, which is formed by connecting plate-shaped formwork members made of precast in the width direction, wherein a ridge is formed on the inner surface of the form member at predetermined intervals in the width direction. And a reinforcing member is provided on the outer surface of a plurality of the mold members through a coupling means that is fixed by penetrating the mold members, and the plurality of mold members are ground by A buried formwork for wall construction characterized by being integrated. 2. A precast flat plate-shaped frame member having protrusions formed on the inner surface at predetermined intervals in the width direction is arranged in the width direction, and a plurality of the frame members are positioned on the outer surface. By the reinforcing member and the connecting means fixed through the form material, the embedded formwork for wall construction by the plurality of formwork materials is grounded, and this embedded formwork of the wall construction part While being built on one side in the wall width direction, on the other side in the wall width direction of the wall building part, a precast flat plate-shaped form material in which ridges are formed on the inner surface at predetermined intervals in the width direction is sequentially formed. Joining means for building the embedded formwork for building a wall, which is built up one by one, and which is formed by a plurality of the formwork materials, and a reinforcing member located on the outer surface in the width direction thereof, and fixed through the formwork material. And the wall rebars installed between the two embedded forms to be embedded. A method for constructing an embedded formwork wall, which comprises placing a cleat.