JP4031626B2 - Support structure for inner wall formwork - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support structure for a formwork used for construction of an inner wall of a concrete building, and more particularly to a support structure for a formwork panel that can greatly reduce the number of separators used to fix the formwork.
[0002]
[Prior art]
The inner wall of a concrete building is constructed by assembling a formwork, placing concrete in the formwork, and removing the formwork after the concrete has solidified. FIG. 4 shows a conventional example of a support structure for a formwork in inner wall construction.
The formwork 50 includes a formwork panel 51, a vertical end thick 52, a horizontal end thick 53, a crosspiece 54, a separator 55, and a foam tie 57.
The formwork panel 51 is a rectangular thin plate made of wood, veneer, resin, or the like, and is used by connecting a plurality of sheets according to the size of the inner wall. The vertical end thick 52 and the horizontal end thick 53 are wooden or metal round bars. The pier 54 is a wooden square. The separator 55 is a metal round bar threaded at both ends, and two washers 56 for holding the space between the mold panel 51 on both sides are fixed. The foam tie 57 is a member for fixing the formwork panel to the vertical end width and the horizontal end thickness. The form tie 57 includes a screw hole into which the screw of the separator 55 is fitted at one end. The arm-shaped metal fitting 58 which supports is rotatably mounted.
[0003]
The construction method of the formwork 50 is as follows.
First, only the mold panel 51 on one side is installed at a predetermined position. Although it may be installed from either the left or right side of FIG. 4, in this example, it is installed from the left formwork panel. The lower end of the formwork panel is fixed to the floor so that it does not move when placing concrete.
Next, a predetermined number of separators 55 and foam ties 57 are attached to a plurality of places on the left formwork panel 51 that has been raised. In the formwork panel, holes for attaching the separator are formed in advance at predetermined intervals.
Next, the right formwork panel 51 is installed at a predetermined position. The separator 55 protruding from the left formwork panel 51 is installed so that the tip of the separator 55 fits into a hole provided in the right formwork panel. Subsequently, a foam tie 57 is attached to the right formwork panel 51.
The vertical end thickness 52 is arranged outside the left and right formwork panels 51 at a predetermined interval, and then the horizontal end thickness 53 is arranged so that the foam tie 57 is sandwiched from above and below, and the vertical end thickness and the horizontal end thickness are tightened with the foam ties. And fix.
[0004]
After the formwork 50 is assembled, concrete is placed between the left and right formwork panels 51 facing each other. When the concrete is solidified, the form tie 57, the vertical end thick 52 and the horizontal end thick 53 are removed, and the formwork panel 51 is disassembled.
The separator 55 is embedded in the concrete, but remains with the tip of the separator protruding from the concrete wall, so the tip that is an unnecessary part is smashed to the extent that the inner wall surface has a dent, and the dent that has been formed is coated with mortar. Finished flat.
[0005]
In the conventional formwork support structure described above, a large number of separators 55 need to be arranged at predetermined intervals in order to maintain the distance between the facing formwork panels 51. Since the work of attaching the separator is complicated and time-consuming, it takes time to form the work and there is a problem in terms of shortening the work period.
Further, since the separator 55 is embedded in the inner wall and cannot be reused, there has been a problem in reducing the cost of the formwork.
In addition, after the concrete has solidified and the formwork has been removed, it is necessary to fill the dents created by beating the end of the separator and filling it with mortar, but after a long time has passed, the separator left inside the inner wall Rust sometimes comes out from the rust, and the rust oozes out through the mortar, causing troubles that stain the wallpaper on the inner wall surface.
[0006]
[Problems to be solved by the invention]
The present invention has been made to solve the above-described problems, and although a separator is used for the beam portion on the inner wall upper portion, the interval between the formwork panels can be maintained without using the separator on the inner wall portion. An object of the present invention is to provide a support structure for an inner wall formwork.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a support structure for a formwork for an inner wall according to the present invention is a support structure for a formwork used when constructing an inner wall of a concrete building, and the support structure is a vertical support for supporting a formwork panel. The end thick and horizontal end thick are assembled into a cross-girder and fixed to the outer wall of the formwork panel via a locking bracket, and the support vertical end thick is attached to the outside of the vertical end and horizontal end thick assembled in the cross-girder, The support member has a structure in which the support member raised up obliquely from the floor surface is firmly attached to the vertical thick end for the support , and the locking metal fitting is a plate-like base with a hole for a wood screw and a base. It consists of a fixed and screwed shaft, a nut fitted to the shaft, and an arm-shaped bracket that is rotatably mounted on the shaft, and the pedestal is fixed to the formwork panel with wood screws, and the arm-shaped bracket The side end thick is entrapped and locked between the base and the base. It is firmly fixed structure and a vertical edge thickness and Yokotan thick tightening the arm-shaped bracket Te.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. FIG. 1 is a cross-sectional view showing a support structure for an inner wall mold according to the present invention, and FIG. 2 is a cross-sectional view of a locking metal fitting.
The formwork 10 includes a formwork panel 11, a vertical end thick 12, a horizontal end thick 13, a crosspiece 14, a separator 15, a support vertical end thick 16, a foam tie 17, a locking fitting 20, and a support member 19. . All members other than the locking metal fitting 20 and the support member 19 have the same structure as the members described in the above-described prior art.
[0010]
As shown in FIG. 2, the locking fitting 20 includes a shaft 21, a pedestal 22, a nut 23, and an arm-like fitting 24. The shaft 21 is a bolt in which a screw is cut, and has a configuration in which an arm-shaped bracket 24 is rotatably attached, the vertical end thick and the horizontal end thick are joined and tightened with a nut 23. A hole for wood screw is drilled in the base 22, and the locking metal fitting can be fixed to a predetermined position of the form panel by the wood screw 25.
[0011]
In this embodiment, the support member 19 has a structure in which a receiving plate and a base plate are respectively attached to the upper and lower sides of the steel pipe. The length of the support member 19 can be adjusted by fitting a thin steel pipe with a small diameter inside the steel pipe with a large diameter. It is said. The support member 19 rises obliquely from the floor surface and is attached to the support vertical end 16. The lower end of the support member 19 is fixed to the floor so as not to be displaced by the anchor. As a result, the formwork panel is firmly erected on the floor surface.
[0012]
The construction method of the support structure for the inner wall form according to the present invention is as follows.
First, the beam formwork on the inner wall is assembled by a conventional construction method using a separator 15 and a foam tie 17.
Next, the inner wall formwork panel 11 is installed facing a predetermined position. The lower end portion of the formwork panel 11 is fixed to the floor surface by an appropriate method so that it does not move when the concrete is placed, and the upper end portion is fixed to the lower end portion of the formwork of the beam with a crosspiece and a nail.
Next, the locking metal fittings 20 are attached to the formwork panel 11 at regular intervals. The base 22 of the locking metal fitting 20 is applied to a predetermined portion of the formwork panel 11 and fixed using a wood screw 25. In addition, before raising the formwork panel 11 to a predetermined position, you may attach the latching metal 20 to the formwork panel 11 in the place where an operation | work is easy beforehand.
[0013]
Next, the vertical end thick 12 is arranged outside the formwork panel 11 at a predetermined interval. Subsequently, the lateral end thick 13 is disposed between the vertical end thick 12 and the arm-shaped bracket 24 of the locking bracket 20, and the nut of the locking bracket 20 is held with the lateral end thick 13 held in the arm-shaped bracket 24. 23 is turned in and the vertical end thick 12 and the horizontal end thick 13 are simultaneously tightened and fixed.
[0014]
The support vertical end thick 16 is further arranged outside the horizontal end thick 13 at a predetermined interval. The support vertical end thick 16 is a vertical end thick for mounting the support member 19 for supporting the formwork panel 11 on the floor surface to the formwork panel 11. In this embodiment, the same material as the vertical end thick 12 is used. Is being used. However, any material can be used as long as the support member can be attached to the formwork panel.
[0015]
FIG. 3 shows an enlarged view of the lower end portion of the support vertical thick end 16. The lower end of the support vertical end thick 16 is inserted into the support vertical end thick fixture 30 and fixed to the floor surface. The support vertical end thick fixture 30 includes a box-shaped main body 31, a bolt 32 having a plate-like metal fixture at one end, and a nut 33.
The support vertical end thick fixture 30 is installed at a predetermined position on the floor surface, and an anchor 35 is driven into and fixed to the floor surface. Subsequently, the lower end of the support vertical end 16 is inserted into the box-shaped main body 31 and is pressed and fixed to one side with a bolt 32 and a nut 33.
Since the vertical support end 16 is firmly fixed and supported at a predetermined position by the fixture 30 and the support member 19, the accuracy of the formwork can be improved.
[0016]
After the formwork 10 is assembled as described above, concrete is placed between the formwork panels 11 facing each other. When the concrete is solidified, the support member 19, the vertical end thick 12, the support vertical end thick 16, and the horizontal end thick 13 are removed. Subsequently, the locking bracket 20 and the formwork panel 11 are removed. Note that the formwork panel 11 may be removed with the locking metal fittings 20 attached, and the locking metal fittings 20 may be removed later at a place where work is easy.
[0017]
If the length of the wood screw for fixing the locking metal fitting 20 to the formwork panel 11 is too long, it will penetrate the formwork panel, and the trace of the wood screw will remain when the inner wall is completed. It is desirable to make it less than the thickness of the panel.
[0018]
The pressure to spread the formwork 10 from the inside to the outside when placing concrete is conventionally supported by the separator and the foam tie, but is supported by the support member 19 in the present invention. The number of the support members 19 is determined in consideration of the concrete pressure applied to the mold, in other words, the height and width of the inner wall. In the embodiment shown in the drawings, the pressure of the concrete to be placed is supported by using two support members 19 for each of the support vertical end thick members 16.
[0019]
Conventionally, when assembling the formwork panel, it was necessary to install only the formwork panel on one side, install the separator, and then install the other formwork. Since it was necessary to install a separator between the formwork panels, the formwork panels on both sides could not be started up simultaneously.
In the present invention, a separator is used only for the beam portion in order to determine the width of the inner wall, but since no separator is used at all for the inner wall portion, it becomes possible to start up the inner wall formwork from both sides at once, which is effective. Lead to a shortened construction period.
[0020]
In the conventional method, after the concrete has been placed and the formwork has been removed, it is necessary to smash the tip of the separator protruding from the inner wall surface with a hammer or the like. It was necessary to apply a mortar to the area and finish it flat. In the present invention, since a separator is not used for the mold of the inner wall portion, the inner wall surface is smooth when the mold is removed, and the labor of finishing with mortar can be saved.
[0021]
In the conventional formwork construction, there are cases where the reinforcing bars inside the formwork panel interfere with each other and the separator cannot be passed straight through a predetermined location, and it is often necessary to attach the separator slightly shifted. For this reason, there is a limit to the accuracy with which the formwork panels can be installed. On the other hand, in the present invention, since the separator is not used for the mold of the inner wall portion, the mold can be accurately positioned and accurate inner wall construction can be performed.
[0022]
Although the locking metal fitting 20 used in the present invention is a metal fitting having a newly developed structure, it can be mass-produced inexpensively because it has a simple structure. Moreover, since all the members required for the other formwork construction can be diverted from the conventional construction method, no extra cost is required for the construction and the implementation is very easy.
[0023]
【The invention's effect】
According to the inner wall formwork support structure according to the present invention described in detail above,
1. Since the number of separators to be used can be greatly reduced, it is possible to save troublesome mounting of the separator and to reduce the cost required for construction.
The support member supports the pressure applied to the mold when casting concrete, so there is no need to hold the mold with a separator.
Since the separator is not used, the work of removing the tip of the separator and repairing it with mortar is unnecessary, and the construction period can be greatly shortened.
Since the locking bracket for locking the lateral end thick to the formwork panel can be fixed to the formwork panel with a wood screw, there is no need to use a foam tie and a separator.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a support structure for an inner wall mold according to the present invention. FIG. 2 is a side view showing a locking metal fitting according to the present invention. FIG. 4 is a cross-sectional view showing the lower end portion of the supporting wall according to the present invention. FIG. 4 is a cross-sectional view showing the conventional support structure for the inner wall formwork.
DESCRIPTION OF SYMBOLS 10 Formwork 11 Formwork panel 12 Vertical end thick 13 Horizontal end thick 14 Crosspiece 15 Separator 16 Support vertical end thick 17 Form tie 19 Support member 20 Locking metal 21 Shaft 22 Base 23, 33 Nut 24, 58 Arm-shaped metal 30 Supporting vertical end thick fixture 31 Box-shaped main body 32 Bolt 35 Anchor 50 Formwork 51 Formwork panel 52 Vertical end thick 53 Horizontal end thick 54 Crosspiece 55 Separator 56 Washer 57 Foam tie

Claims (1)

In the support structure of the formwork used when constructing the inner wall of a concrete building,
The support structure includes a vertical end thick and a horizontal end thick to support the formwork panel in a cross girder, and is fixed to the outer wall of the formwork panel via a locking metal fitting. The support vertical end thick is attached to the outside, and the support member raised obliquely from the floor surface is firmly attached to the support vertical end thick ,
The locking bracket is mounted in a plate-like pedestal with holes for wood screws, a shaft fixed to the pedestal and threaded, a nut fitted on the shaft, and a shaft rotatably mounted It consists of arm-shaped brackets, and the pedestal is fixed to the formwork panel with wood screws, and the horizontal end thick is entangled and locked between the arm-shaped bracket and the pedestal, and the arm-shaped bracket is tightened with a nut to A support structure for a formwork for an inner wall, characterized in that the end thickness is firmly fixed .

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