JPH08165659A - Retaining wall method - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a retaining wall construction method that does not require a complete temporary road, requires less excavation of the foundation, does not require a formwork, and reduces the construction cost and construction period. [Structure] After excavating and leveling the first stage of the retaining wall construction ground 1, the old tires 2 of the first stage are laid side by side to join the old tires of the same, and then the old tire group of the first stage Second on top
The old tires of the second stage are laid side by side and the old tires are joined together, and the following steps are repeated, and gravel, sand, concrete excavated soil, soil cement etc. are filled in the gap between the inner diameter of the tire and the joint space. After filling, the exposed part of the old tire is spray-finished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a retaining wall such as a slope bottom of an embankment.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 9 (a) and 9 (b), a reinforced concrete gravity retaining wall b or an inverted T retaining wall c has been constructed on the slope end of the embankment a.

[0003]

The conventional construction method requires a road for construction of ready-mixed concrete vehicles, and therefore construction costs for golf courses and roads in mountainous areas are high. In addition, conventional concrete retaining walls require a large amount of excavation to reach a strong foundation ground. The present invention has been proposed in view of the above problems of the prior art, and its purpose is to eliminate the need for a complete temporary road, the need for excavating the foundation is small, the formwork is not required, and the construction cost is low. Is to provide a retaining wall method that significantly reduces

[0004]

In order to achieve the above object, according to the retaining wall construction method of the present invention, after excavating and leveling the first stage of the ground of the retaining wall construction section, the first stage is carried out. Old tires are laid side by side and old tires are joined together, then second stage old tires are laid on the same first stage old tire group and old tires are joined together. After filling the filling material between the inner diameter of the tire and the gaps in the joint space, the exposed portion of the old tire is sprayed and finished.

[0005]

According to the present invention, as described above, the first stage of the retaining wall construction ground is excavated, the ground is laid, old tires are laid on the ground, and the upper, lower, left and right tires are joined to each other. A space between tires is filled with a filling material, and a retaining wall in which the filling material and the tire are integrated is constructed without using a mold.

[0006]

The present invention will be described below with reference to the illustrated embodiments. By excavating the retaining wall construction ground 1 by the structural calculation based on the retaining wall construction place, etc., the first stage of land preparation and flooring are performed, and old tires 2 such as a large dump truck are laid side by side to join the adjacent old tires 2 To do.

Then, the old tire 2 is tightened with a tightening band 3, a wire rope, and the like. A band-shaped member is preferable as the fastening material. When a band-shaped fastening means is used, a band fastening tool is used, and when a wire rope is used, a wire clip is used. Then, the second and subsequent stages of the old tires 2 are laid down to the required height on the first-stage old tires 2 group, and the upper and lower old tires 2 are also connected in the same manner as the connection of the old tires 2 of each stage.

The method of stacking the old tires 2 and the method of connecting the old tires are arbitrary. In parallel with the laying of the old tires 2, the inner wall of the old tires 2 and the gaps of the joint space are filled with filling materials such as concrete, gravel, sand, excavated soil, and soil cement at appropriate times to assemble a retaining wall. After the work is completed, spray concrete mortar and grass on the exposed area and finish planting and grass on the interlocking area.

1 to 3 show the embankment 4 by the above method.
2 shows the retaining wall 5 constructed on the sloping end of the tire, and the laying width of the old tire can be expanded depending on the geology. Fig. 2 shows the case where the bearing capacity is normal, and the laying width B in this case is shown in Fig. 3. It should be smaller than the floor width B'when the proof stress is weak. (B <B ') A in the figure,
A'represents the width of the top end of the retaining wall 5, and H represents the height of the retaining wall 5.

FIG. 1 is an elevational view of a retaining wall constructed by the above method, for example, a first step portion 5a, a second step portion 5b,
The third step portion 5c is formed by stacking five old tires,
The fourth step portion 5d is constructed by stacking old tires in three steps.

[0011]

According to the present invention, as described above, after the first stage of ground excavation of the retaining wall excavation ground is performed, old tires of the first stage are laid side by side and connected to each other. The step of laying out the second stage old tires on the old tire group and tying the tires together is repeated up to the required height, and the inner diameter of each tire and the void space of the old tire joint space are filled. Since the retaining wall in which the old tire group is integrated by filling the material is constructed, it can be installed in any place without selecting the installation site, and a complete temporary road is not required Without the need to utilize waste products,
The material is saved, the formwork is unnecessary, the construction cost can be remarkably reduced, and the construction period can be shortened.

Further, the amount of excavated earth of the foundation can be reduced by expanding the spread width of the old tire which is a constituent element of the retaining wall depending on the geology.

[Brief description of drawings]

1 is a side view of a retaining wall constructed by the method of the present invention.

FIG. 2 is a cross-sectional view of the retaining wall.

FIG. 3 is a cross-sectional view showing a state where the bottom of the retaining wall is widened.

FIG. 4 is a plan view showing an example of an arrangement state of old tires.

FIG. 5 is a plan view showing another example of arrangement of old tires.

FIG. 6 is a plan view showing a state of stacking old tires that form a retaining wall.

FIG. 7 is a perspective view showing a connected state of old tires.

8A and 8B are a plan view and a side view of an old tire.

9 (a) and 9 (b) are cross-sectional views showing examples of conventional retaining walls.

[Explanation of symbols]

 1 Retaining wall construction ground 2 Old tires 3 Tightening band 4 Embankment 5 Retaining wall

Claims (1)

[Claims] 1. After excavation and leveling of the ground of the retaining wall construction section, old tires of the first step are laid side by side to join old tires together, and then the old tire group of the first step After laying out the second stage old tires and joining the old tires to each other, the following steps are repeated, and after filling the filling material between the inner diameter of the tire and the gaps in the joint space, the old tire exposed parts are Retaining wall method characterized by spray finish.