JPH0791048A - System formwork - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to move even if there are beams or floor slabs above the building part, and the height can be adjusted according to the height of the building part to improve work efficiency in formwork assembly and disassembly. It can improve dramatically. [Structure] The system formwork 1 has a central beam member 2 and an upper slide beam member 3 and a lower slide beam member 4 which are connected to the upper and lower parts of the central beam member 2 so as to be capable of expanding and contracting. And place it on the carriage 5. A weir plate 8 having a required height is attached to the front surface of each beam member through a lateral thick member 6. A beam 13 is provided at the upper end of the upper slide beam member 3.
The upper anchor member 14 that is fixed to the lower floor plate 11 is engaged with the lower anchor member 14 that is fixed to the lower slide beam member 4. A caster 16 and a jack 17 are attached to the carriage 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system formwork used for constructing an outer wall of a basement having a reinforced concrete structure, for example.

[0002]

2. Description of the Related Art Conventionally, in order to construct an outer wall of a basement by a reinforced concrete structure, a reinforcing bar is arranged in the space between the mountain retaining wall and the basement, and a formwork is formed with a space corresponding to the thickness of the outer wall. They are placed and concrete is placed between the retaining wall and the formwork.

The conventional method of fixing the weir plate on the outer wall portion is to take anchors on the H steel of the mountain retaining material, sheet piles, etc., weld the separators to the anchors while adjusting the dimensions, and further fasten the separators. In general, the weir plate is erected and fixed by connecting it to. There is also a method in which the back surface of the weir plate to be erected is supported by a prefabricated strong frame, and only the lower part of this frame is fixed to the mountain retaining wall or the floor slab of the lower structure so that the weir plate is erected and fixed. It was

[0004]

However, in order to fix the barrier plate by using the separator, a large amount of anchors and separators must be arranged at a pitch of 300 to 400 mm, and the dimensional adjustment and welding work are significantly required. It was complicated, and the workers required skilled workers. Further, there is a drawback that the anchor cannot be removed when the H steel of the mountain retaining material or the position of the sheet pile does not correspond to the separator. Further, since the form frame serves as a return wall, it is difficult to use a large-sized panel, and there is a drawback that work efficiency is significantly reduced.

On the other hand, when the back surface of the barrier plate is supported by a strong frame, only the lower part of the frame needs to be firmly fixed, so that the number of the separators can be greatly reduced and the work efficiency is improved. Can be made. However, since all the lateral pressure at the time of pouring concrete is transmitted to the floor slab through the frame, there is a possibility that the floor slab has insufficient proof stress. Moreover, since the frame, which is a heavy object, is installed by using a lifting device such as a crane, it has a drawback that it cannot be used when there is a crossbeam or an upper floor slab above the building portion. Further, since the dam plate attached to the conventional frame is fixed at a constant height, there is a limitation in diversion, and there is also a drawback that installation is not possible if there is a cutting beam or floor slab within the height of the frame.

The present invention solves the above-mentioned problems, and can hold and fix a weir plate without arranging a large amount of anchors or separators, and can be installed without using lifting equipment. An object of the present invention is to provide a system formwork capable of assembling / disassembling the frame and dramatically improving work efficiency. Also, even if there are beams and floor slabs above the building part, it can be moved and the height can be adjusted according to the height of the building part, and there is no need to increase the yield strength of the floor slab for concrete placement. It also aims to provide a system formwork.

[0007]

In order to solve the above-mentioned problems, the system formwork of the present invention comprises a central beam member arranged in the vertical direction and an upper slide beam connected to the upper part of the central beam member so as to extend and contract. Member, a lower slide beam member connected to the lower part of the central beam member so as to be able to expand and contract, a caster on which the lower slide beam member is placed and horizontally movable on a structure, and a jack for construction adjustment. A frame member, a dam plate attached to the front surfaces of the central beam member and the upper and lower slide beam members through a lateral thick member, and an upper portion that engages with the upper end of the upper slide beam member and is fixed to a structure. It is characterized by having an anchor member and a lower anchor member that engages with a lower end portion of the lower slide beam member and is fixed to a structure.

According to a second aspect of the system form, the lower anchor member includes a pressing plate that pivotally supports the lower end of the lower slide beam member, and an anchor bolt fixed to a structure. It is characterized in that it has a support fitting which is connected to an anchor bolt and presses one side of the pressing plate which rotates below the lower slide beam member. The system formwork according to claim 3, wherein the frame member is a front wheel caster disposed on the dam plate side, and a rear wheel disposed on the back face side of the dam plate and installed at a higher horizontal height than the front wheel caster. It is characterized by having a caster. The system formwork according to claim 4 further includes the central beam member and the upper part.
The lower slide beam members are arranged in a plurality of rows with respect to the barrier plate, and a scaffolding plate support member capable of expansion and contraction is detachably attached between adjacent central beam members.

[0009]

In the system form frame of the present invention, the frame member is placed on the floor slab, and the lower slide beam member, the central beam member and the upper slide beam member are sequentially connected to the frame member for assembly. These vertical lengths can be freely changed according to the height of the skeleton because the upper and lower slide beam members are connected to the central beam member so that they can expand and contract. Further, a lateral thick member and a dam plate are attached to the front surface of each of these beam members.

Next, the caster provided on the frame member is used to move to a predetermined place, and the construction of the dam plate is adjusted using a jack. Then, the upper anchor member is engaged with the upper end portion of the upper slide beam member, and the lower anchor member fixed to the structure is engaged with the lower end portion of the lower slide beam member to fix the system formwork. The lateral pressure of the concrete cast inside the system formwork is supported by the upper and lower anchors via the dam plate, the lateral end thick material and each beam material.

In the system form according to the second aspect of the present invention, the pressing plate pivotally supported on the lower end of the lower slide beam member is rotated downward, and one side of the pressing plate is brought into contact with the support fitting. Since the support metal fitting is connected to the anchor bolt fixed to the structure, the lateral pressure of the concrete is transmitted to the anchor bolt via the pressing plate and the support metal fitting. When moving the system form, the pressing plate is rotated upward.

In the system formwork according to claim 3, since the rear wheel casters arranged on the rear side of the weir plate are installed higher than the front wheel casters arranged on the weir plate side of the frame member, the front and rear wheels are installed. When moving by touching the ground, the barrier plate and each beam member as a whole are inclined to the rear wheel side. Since the load distribution of the entire system is eccentric to the front wheel side, tilting it toward the rear wheel side reduces the risk of falling. Also, after moving the barrier plate to a predetermined position, the rear wheel side is raised by a jack to adjust the construction.

Further, in the system formwork according to the fourth aspect, a plurality of rows of beam members are arranged on the barrier plate, and a scaffolding plate supporting member capable of expanding and contracting between adjacent central beam members is detachably mounted. Using this, scaffolding boards are bridged between each beam material.
A desired scaffold can be formed by moving the scaffold plate support member to an arbitrary height and position.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a side view of the system formwork of the present invention, FIG. 2 is a front view of the system formwork, and FIG. The system formwork 1 includes a central beam member 2, an upper slide beam member 3 and a lower slide beam member 4, which are connected to the upper and lower portions of the central beam member 2 so as to be expandable and contractible.
The beam members are connected to each other in a straight line and placed on the carriage 5 constituted by a frame member. On the front surface of each beam member, a lateral end thick member 6 of channel steel is fastened, and a dam plate 8 having a required height is attached via a joist member 7. This system formwork 1
Is used when constructing walls between structures, and in particular, the outer wall 1 adjacent to the mountain retaining wall 9 as shown in FIG.
It is suitable to use when constructing 0 or a pillar.

The trolley 5 is placed on a lower floor slab 11 which is a lower structure, and each beam member is erected vertically in the direction of the upper floor slab 12 and the beam 13 which are upper structures. Upper slide beam material 3
The upper anchor member 1 fixed to the beam 13 and the outer wall at the upper end of the
4 is engaged, and a lower anchor member 15 fixed to the lower floor slab 11 is engaged with the lower end portion of the lower slide beam member 4. or,
The dolly 5 is equipped with casters 16 for horizontally moving on the lower floor slab 11, and is also provided with a jack 17 for adjusting the installation of the dam plate 8.

The central beam member 2 has an upper chord member 18 and a lower chord member 19 which are arranged parallel to the vertical direction, and an end vertical member 20, a diagonal member 21, and a central vertical member 22 which interconnect these members. The upper chord member 18 is, as shown in FIG.
a and 18a are arranged at a predetermined interval. The lower chord member 19 also has a similar structure, and since the end vertical member 20 and the diagonal member 21 connect the facing flanges of these channel steels, the upper and lower slide beam members 3 and 4 are provided above and below the central vertical member 22. A space for inserting each is formed. The upper chord member 18 and the lower chord member 19 have a plurality of pin insertion holes 18b, 1
9b are respectively drilled.

The upper slide beam member 3 has an upper chord member 23 and a lower chord member 24 which are arranged at the same height as the central beam member 2.
And a vertical member 25 and a diagonal member 26 for connecting them, and a handrail frame 27 is attached to the diagonal member 26. The upper chord member 23 and the lower chord member 24 have a member width that substantially fills the above-described gap formed by the central beam member 2, and each web has a plurality of pin insertion holes 23a and 24a.

The lower slide beam member 4 also has an upper chord member 28, a lower chord member 29, a vertical member 30, and a diagonal member 31 having substantially the same structure, and a plate 32 for connecting the lower anchor member 15 to the lower end portion of the diagonal member 31. To fix. Also, the upper chord member 28 and the lower chord member 2
The web 9 is provided with pin insertion holes 28a and 29a.

The carriage 5 has a plurality of horizontal members 33 formed in a frame shape. A pair of front wheel casters 16a, 16a are provided on the lower chord member 29 side of the lower slide beam member 4 on the lower surface of the frame member.
On the chord member 28 side, a pair of rear wheel casters 16b, 1 is provided.
Attach 6b. The installation height of the rear wheel casters 16b is set higher than that of the front wheel casters 16a. A plurality of jacks 17 are attached to the casters 16 in the vicinity thereof so as to penetrate the horizontal member 33.

Further, a horizontal member 34 for connecting the lower chord member is provided on the frame material on the front wheel caster 16a side, and a rear wheel caster 16 is provided.
A column member 35 for connecting the upper chord member is attached to the frame member on the b side. A plurality of pillar members 35 can be installed upright according to the size of the carriage 5, and in the embodiment shown in FIG. 2, three rows of beam members are connected. Therefore, it is possible to adjust the span in the lateral direction by preparing system formwork 1 having different widths and combining them. The upper chord member 28 and the lower chord member 29 of the lower slide beam member 4 are connected to the column members 35 and the horizontal members 34 by connecting plates 28b and 2b.
9b is projected.

A lower slide beam member 4, a central beam member 2 and an upper slide beam member 3 placed on the carriage 5.
Is to adjust the total length according to the height of the weir plate 8 to be installed,
A pin 36 is inserted into each corresponding pin insertion hole to form a beam material having a predetermined length. The embodiment shown in FIGS. 1 and 2 is an example in which the beam length is extended to the maximum, but an embodiment in which the beam length is reduced to the minimum is shown in FIG. In this case, the upper and lower slide beam members 3, 4 and most of the pillar members 35 of the carriage 5 are accommodated in the gap between the central beam members 2.

Further, as shown in FIG. 2, a plurality of bolt holes 18c are formed in the flange of the upper chord member 18 of the central beam member 2. Since similar bolt holes are formed in the flange of the lower chord member 19, the scaffold receiving slide pipe 37 is used by utilizing these bolt holes.
Is attached and the scaffolding plate 38 is laid. The situation of laying the scaffold board will be described with reference to FIG. FIG. 5 is an enlarged plan view of the scaffold board laid. The scaffolding receiving slide tube 37 is an outer tube 37a.
The inner tube 37b is inserted into the inner tube 37b to adjust the total length, and the inner tube 37b can be attached even if there is a difference in the distance between the adjacent beam members.

At both ends of the scaffold receiving slide pipe 37, a supporting plate 37c having a size capable of being housed between the flanges of the channel steels 18a and 19a is provided in a protruding manner. This support plate 3
The bolt hole formed in 7c and the bolt hole of the central beam member 2 are aligned with each other, and the scaffold receiving slide tube 37 is fastened to a required height by using a bolt nut 39. When the scaffold plate 38 is not laid, the scaffold receiving slide pipe 37 can be housed in the channel steel by removing one bolt nut 39.

The upper anchor member 14 has an anchor bolt 14a fixed to an existing structure, a pressure bearing plate 14b, and a metal fitting 14c for supporting the upper end portion of the upper slide beam member 3. The anchor bolt 14a is driven into the beam 13 or above the dam plate 8 that wraps the existing outer wall portion.

Next, details of the lower anchor member 15 will be described with reference to FIG. FIG. 6 is an enlarged side view of the lower anchor member. The lower anchor member 15 includes an anchor bolt 15a fixed to the lower floor slab 11 and the anchor plate 1 fixed to the anchor bolt 15a.
5b, an anchor pin 15c rotatably attached to the anchor plate 15b, a bolt 15d fixed to the anchor pin 15c and extending rearward, and a support plate 15 screwed to the bolt 15d.
nut 15f for locking e and lower slide beam member 4
A pressure plate 39 that is rotatably supported on the lower end portion of the
5e and a receiving fitting 15g sandwiched between the pressing plate 39. In this way, the fastening position of the lower anchor member 15 is the weir plate 8
The adjustment work becomes easy when it is separated from the position.

The pressing plate 39 is a substantially triangular flat plate 39a.
And its 1 apex angle at the lower chord member 2 of the lower slide beam member 4
9, a pin 39b pivotally supported, a guide pin 39c protruding from the other one apex angle portion, and a locking pin hole 39d formed below the flat plate 39a. Guide pin 39c
Moves along a guide hole 32a formed in the plate 32, and when the flat plate 39a is rotated upward, a pin (not shown) is inserted through the locking pin hole 39d and the guide hole 32a to engage the pressing plate 39 upward. Stop. Further, when one side of the flat plate 39a rotates downward, it becomes vertical to the lower floor slab 11 and evenly abuts on the receiving metal fitting 15g.

The lower anchor member 15 shown in FIG.
The anchor bolt 15a is driven forward in order to clamp and fix the root roll fixed timber 40 showing the lower end portion of the outer wall 10 to be constructed, but it may be driven behind the pressing plate 39 as shown in FIG. . FIG. 7 is an enlarged side view of the lower anchor member of another embodiment. In this case, the receiving metal fitting 115g that contacts the pressing plate 39 is supported by the bolt 115d attached to the anchor plate 115b. In this way, the driving position of the anchor bolt 15a can be changed according to the bar arrangement state of the lower floor slab 11.

Next, the operation of the system form 1 will be described based on the embodiment shown in FIG. The carriage 5 is placed on the lower floor slab 11 to connect the lower slide beam member 4 and the central beam member 2 and the upper slide beam member 3 are adjusted while adjusting the height according to the height of the structure to be constructed. Link. Next, the barrier plate 8 formed in a required size is locked to the front surface of each beam member through the joist member 7 and the lateral end thick member 6. In this way, the system formwork 1 of one unit is produced, but by preparing a plurality of system formwork 1 according to the span length of the structure and connecting these, the entire formwork can be assembled. In the assembled system form 1, as shown in FIG. 8, the trolley 5 supported by the casters 16 becomes higher in the front, and therefore the whole is inclined toward the rear wheel casters 16b. When the system formwork 1 is erected vertically, the entire load distribution is eccentric to the front wheel casters 16a side,
When tilted rearward, the center of gravity moves to the center, improving stability.

Next, using the casters 16, the lower floor slab 11
Although it moves to a predetermined position on the upper side, at this time, the pressing plate 39 of the lower anchor member 15 is pivotally locked upward, and does not hinder the movement of the system formwork 1. In the method of fixing the system form 1, first, the position of the dam plate 8 is determined in accordance with the root curling lumber 40 fixed to the lower end of the outer wall 10 to be constructed. Next, the jack 17 on the rear wheel caster 16b side is used to make the whole horizontal, and the weir plate 8 is further adjusted.

Then, the scaffold plate 38 provided between the central beam members 2 is used to engage the upper anchor member 14 with the upper end portion of the upper slide beam member 3, and the pressing plate 39 is rotated downward to move the lower anchor member. It is brought into contact with the receiving bracket 15g of 15. While adjusting the lengths of the anchor bolts 14a and the bolts 15d, the beam material is fastened and the whole system is fixed.
The lateral pressure of green concrete (not shown) cast inside the formwork is dispersed and supported by the upper and lower anchor bolts 14a, 15a through the dam plate 8, joist material 7, lateral end thick material 6 and each beam material. It

At the time of disassembling the form, the barrier plate 8 can be rotated and separated from the wall surface only by unfastening the upper anchor member 14 and the lower anchor member 15 and loosening the jack 17. When constructing walls with the same height, it can be diverted simply by moving the system formwork 1, and when constructing walls with different heights, weir plate 8 and joist. By removing the material 7 and the lateral end thick material 6 and adjusting the beam material length, and performing the same assembling operation again, another system form can be manufactured.

Although the embodiment described above is a case where the outer wall in contact with the mountain retaining wall is constructed by the reverse striking method, it can be used in any formwork when constructing a skeleton, for example, a column member. It can also be used on the inner wall.

[0033]

As described above, in the system formwork according to claim 1, since a series of beam members are fixed to the structure by the upper anchor member and the lower anchor member, a large amount of anchors and separators are provided. The weir plate can be held and fixed without arranging it, making it easy to assemble and assemble the formwork even if it is not a skilled worker.
It can be dismantled and work efficiency can be dramatically improved. Further, since concrete pressure is supported by the anchors at both ends of the beam member, it is not necessary to particularly increase the proof stress of the structure.

Further, since the series of beam members are the central beam member and the upper and lower slide beam members which are connected to the central beam member so as to be expandable and contractible, the beam length can be adjusted according to the height to be constructed. Further, since this system formwork is provided with casters on the frame member on which the beam material is placed, it can be easily moved horizontally without using a lifting device, and therefore, the crossbeam or floor slab is provided above the building portion. It can be installed even if it exists.

In the system formwork according to the second aspect of the present invention, the lower slide beam member is provided with a pressing plate at the lower end portion thereof, and the lower anchor member is configured to rotate downward to support and fix the lower plate member. Clearance can be created between objects and the system formwork can be easily moved. Further, in the system formwork according to the third aspect, the rear wheel casters are installed at a horizontal height higher than that of the front wheel casters, so that the center of gravity of the system formwork during movement moves to the central portion and the stability increases. Moreover, the mold can be easily set only by operating the jack after determining the position of the dam plate.

In the system formwork according to the fourth aspect, since the scaffolding plate support member which can be expanded and contracted between the central beam members is detachably mounted, it is not necessary to newly provide a scaffolding. Moreover, since the scaffolding plate support member can be moved to any height and position, a desired scaffolding can be easily formed.

[Brief description of drawings]

FIG. 1 is a side view of a system formwork.

FIG. 2 is a front view of a system formwork.

FIG. 3 is an explanatory diagram of a connected state of each beam member.

FIG. 4 is a side view of another example system form with reduced beam length.

FIG. 5 is an enlarged plan view of the scaffold board laid.

FIG. 6 is an enlarged side view of a lower anchor member.

FIG. 7 is an enlarged side view of a lower anchor member of another embodiment.

FIG. 8 is a side view of the system formwork during movement.

[Explanation of symbols]

 1 System Formwork 2 Center Beam Material 3 Upper Sliding Beam Material 4 Lower Sliding Beam Material 5 Bogie 6 Horizontal Edge Thick Material 8 Weir Board 11 Lower Floor Slab 13 Beam 14 Upper Anchor Member 15 Lower Anchor Member 16 Caster 17 Jack

Front page continuation (72) Inventor Saburo Koseki 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Hidetoshi Kuwahara 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Takashi Nagumo 1-7-10 Nihonbashi Ningyocho, Chuo-ku, Tokyo Inside Holly Co., Ltd.

Claims (4)

[Claims] 1. A central beam member vertically arranged, an upper slide beam member that is elastically connected to an upper portion of the central beam member, and a lower slide beam member that is elastically connected to a lower portion of the central beam member. A frame member provided with casters for placing the lower slide beam member and horizontally movable on the structure and a jack for construction adjustment, and in front of the central beam member and the upper and lower slide beam members. A weir plate attached through a lateral end thick material, an upper anchor member that engages with the upper end portion of the upper slide beam member and is fixed to the structure, and a structure that engages with the lower end portion of the lower slide beam member A system formwork having a lower anchor member for fixing. 2. The system formwork according to claim 1, wherein the lower anchor member includes a pressing plate rotatably supported on a lower end portion of the lower slide beam member, and an anchor bolt fixed to a structure. A system formwork, comprising: a support fitting that is connected to the anchor bolt and presses one side of the pressing plate that rotates below the lower slide beam member. 3. The system formwork according to claim 1, wherein the frame member has a front wheel caster disposed on the weir plate side and a horizontal height higher than the front wheel caster disposed on the back face side of the weir plate. A system formwork having a rear wheel caster installed in the. 4. The system formwork according to claim 1, wherein the central beam member and the upper and lower slide beam members are arranged in a plurality of rows with respect to the weir plate, and the central beam members expand and contract between adjacent central beam members. A system formwork characterized in that a possible scaffolding plate support member is detachably attached.