JPS6046219B2 - Construction method of concrete retaining wall - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method for constructing a concrete retaining wall.

Conventionally, in order to construct an exploration wall made of concrete or reinforced concrete, weir plates made of wood or metal were installed in a predetermined shape, and this could be made to stand on its own with support made of beams, diagonals, etc. from the outside. Then, reinforcing bars were placed between opposing weir plates, then concrete was filled, and once the concrete reached the required strength, the weir plates and shoring were removed. However, in this type of retaining wall construction method, when assembling a formwork consisting of a large number of weir plates and shoring, the weir plates are precisely placed one by one to avoid leaving gaps in various places after the formwork is assembled. In addition, once the concrete reaches the required strength, all the weir plates and shoring must be removed, which requires a lot of time and effort during construction. It cost.

This invention was proposed in view of the above circumstances, and an object of the present invention is to provide a method for constructing a concrete retaining wall that can simplify the construction, save labor, significantly shorten the construction period, and significantly reduce the construction cost. With the goal.

A method for constructing a concrete retaining wall according to the present invention includes arranging a plurality of metal shapes having a plurality of claws on the side surfaces while appropriately separating them, constructing a framework in which the claws face each other, and connecting this framework to the frame. Support it from the outside with shoring so that it can stand on its own, and then attach wire netting such as metal lath, wire lath, or ribass to the inside of the opposing frame by hooking it to the claws, and then attaching the opposing wire netting to the inside of the opposing framework. Concrete is poured inside, and when the concrete reaches the required strength, the wire mesh is left as is, and only the metal forms that make up the frame and the shoring that supports the frame are removed to form a concrete retaining wall. It is.

According to the method of constructing a concrete wall according to the present invention, instead of installing a large number of weir boards one by one, wire mesh is installed, and the wire mesh is attached by simply hooking it onto the claws of the metal shapes. Because it is possible to do so, it is possible to significantly save the time and effort required for assembling the shapes and temporary materials, resulting in simplification of construction, labor savings, significant shortening of construction period, and reduction in construction costs.

Furthermore, when the finished surface is plastered, it is possible to prevent the finished part from peeling off. In addition, if paper such as loop ink is pasted on the surface of the wire mesh in advance and the filled concrete reaches the required strength, the wire mesh can be peeled off and the surface of the filled concrete will be smooth and smooth, making it ideal for plastering. There is no need to finish the surface of the retaining wall through construction work.
Hereinafter, a concrete retaining wall with a bottom plate illustrating the present invention will be described.

First, a concrete foundation 1 is created using cast-in-place concrete. Next, frames 2, 2 facing each other at a predetermined interval are assembled on the concrete foundation 1 with one frame 2 tilted inward to some extent, and this frame 2, 2 is moved from the outside with the flap members 3, slanted. It is supported by shoring made of timber 4 and angle timber 5 so that it can stand on its own. The frame assembly 2 is composed of a lower horizontal member 7 made of a metal profile having a substantially lip groove-like cross section and having a plurality of cut-and-raise claws 6 on one or two sides, a support column 8, and an upper horizontal member 9. When assembling frames 2 and 2,
The lower horizontal members 7, 7 are laid on the concrete foundation 1 in parallel with a predetermined distance apart, and are fixed on the concrete foundation 1 with angle members 5, 5. The columns 8, 8 are erected on the lower horizontal members 7, 7 at predetermined intervals in the longitudinal direction of the lower horizontal members 3, 3, and are lowered by connecting fittings 10, 10 as shown in FIGS. 5 and 6. Connected to horizontal members 3,3. The upper horizontal members 9, 9 are installed across the columns 8, 8, and the connecting fittings 10,
10 connects to the columns 8,8. The connecting fitting 10 is formed into a substantially L-shape by a horizontal portion 11 and a vertical portion 12, and a shaft pin 13 is passed through the approximately central portion of the horizontal portion 11 from above, and a clamping portion is inserted into the portion through which the shaft pin 13 passes. A plate 14 is rotatably fixed.

The connecting fitting 10 is attached to the upper and lower horizontal members 7, 9 by sandwiching the lip parts 15, 15 of the upper and lower horizontal members 7, 9 between the horizontal part 11 and the clamping plate 14. Each is fixed. Further, on the left and right edges of the vertical part 12, clamping pieces 16, 16 that protrude into two in the horizontal direction are formed along the vertical direction of the vertical part 12. The lip portions 15, 15 are sandwiched and fixed to the support column 8. Frame assembly 2, 2
When the assembly is completed, a wire netting 17 such as wire lath or wire plas is cut and raised on the inside of the frame assemblies 2, 2 and attached by hooking it to the claws. In addition, if necessary, frame assembly 2,
The two are fixed with a tightening bolt 18. After the attachment of the wire meshes 17, 17 is completed, reinforcing bars 19 are placed inside the wire meshes 17, 17, and then concrete 20 is placed.

When the cast concrete 20 reaches the required strength, the frameworks 2, 2, and supporting members 3, diagonal members 4, and angle members 5 are removed.

Then, if necessary, a raising material 21 such as monotal is applied to the surfaces of the wire meshes 17, 17. In this case,
If a paper such as roofing is pasted on the surface of the wire meshes 17, 17 in advance and the paper is peeled off after the concrete 20 has hardened, the surface of the concrete 20 will be finished smooth and the finishing material 2
You can omit 1. As described above, according to this construction method, a concrete retaining wall can be constructed extremely easily, and the construction work can be simplified and omitted, the construction period can be significantly shortened, and the construction cost can be significantly reduced.

In particular, the upper and lower horizontal members and the supports can be used repeatedly, making it extremely economical. Furthermore, if the raised surface is plastered, it is possible to prevent the finished part from peeling off.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a concrete retaining wall with a bottom plate, Figure 2 is a perspective view showing the connection between the lower horizontal member and the pillars, Figure 3,
FIG. 4 is a partial perspective view of the upper and lower horizontal members and the support column, and FIGS. 5 and 6 are perspective views of the connecting fittings. 1... Concrete foundation, 2... Frame,
3...Fata material, 4...Diagonal material, 5...
・Angle material, 6... Cut-and-raise claw, 7... Lower horizontal member, 8... Support column, 9... Upper horizontal member, 10...・Connection fittings, 11...Horizontal part, 12...Vertical part, 13...Axis pin, 14...Holding plate, 15...Lip part, 16・・・
...Holding piece, 17...Wire mesh, 18...
...Tightening bolt, 19...Reinforcement bar, 20...
Concrete, 21... Finishing material.

Claims (1)

[Claims] 1 A plurality of metal shapes having a plurality of claws on the sides are arranged at appropriate intervals to form a frame assembly in which the claws face each other, and this frame is supported from the outside by shoring so that it can stand on its own. Next, wire mesh is hooked onto the claws and attached to the inside of the opposing frames, and concrete is then filled into the opposing wire meshes. When the concrete reaches the required strength, the frames and A method of constructing a concrete retaining wall, which is characterized by removing shoring.