JPH06346470A - How to build a retaining wall - Google Patents

Abstract

(57) [Summary] [Objective] To provide a construction method capable of constructing a retaining wall having a high vertical height. [Structure] A hole 6 and a reinforcing bar 7 rising from the hole 6 are provided in the foundation D, and a projecting portion 3 through which a vertical hole 4 having a large diameter penetrates is provided on the back surface of the concrete block 1 which is sequentially stacked on the foundation D to communicate with each other. By arranging the wire rod 8 in the vertical hole 4 and placing concrete in the vertical hole 4 and the hole 6, a concrete column integrated with the foundation D can be formed on the back surface of the concrete block 1, and the concrete column is reinforced by the concrete column. Blocks 1 can be stacked vertically high to build a retaining wall.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Retaining walls are constructed using concrete blocks to protect the back of embankments, but it is effective to construct the retaining walls as vertically as possible in order to effectively use the site and reduce costs. Important above.

A conventional concrete block for embankment retaining wall is formed by providing a projecting portion having a reinforcing bar insertion hole on the back surface of a rectangular face plate, and stacking these blocks in order vertically and inserting the reinforcing bar into the reinforcing bar insertion hole communicating with each other. Then, the retaining wall is constructed by filling the insertion hole with mortar.

[0004]

By the way, in the conventional concrete block, since the reinforcing bar insertion hole has a small diameter, not only the concrete cannot be charged and filled, but also it is difficult to sufficiently fill the mortar. There is a problem that the reinforcing effect of the reinforcing bar and mortar is low, and the height dimension that can be built vertically is low.

Therefore, an object of the present invention is to provide a method of constructing a retaining wall which can be constructed high in a vertical state by reinforcing a concrete block with a concrete column integrated with a foundation.

[0006]

In order to solve the above problems, the first invention uses a concrete block provided with a projection on the back surface of which a vertical hole having a large diameter penetrates vertically. Stacked on the foundation one by one so that the vertical holes communicate with each other, and in the vertical holes that communicate vertically, we adopted a configuration that forms concrete columns fixed to the foundation by arranging the wire rods fixed to the foundation and filling concrete. It is a thing.

[0007] Similarly, the second invention uses a concrete block on the rear surface of which a vertical hole having a large diameter is provided so as to vertically penetrate, and the blocks are sequentially stacked on the foundation so that the vertical holes communicate with each other, and the blocks communicate vertically. In the vertical hole to be formed, a concrete column fixed to the foundation is formed by the reinforcement of the fixed wire rod and the foundation and the filling of concrete, and the tension material laid inside the embankment is connected to the back surface of the concrete block. It was adopted.

[0008]

[Operation] Concrete blocks are sequentially stacked on the foundation so that the vertical holes on the rear side communicate with each other, and a wire rod whose lower end is fixed to the foundation is laid in this vertical hole, and concrete is placed in the vertical hole. For example, a concrete column fixed to the foundation can be formed on the back side of the concrete block, which can improve the stacking strength of the vertically stacked concrete blocks and increase the vertical stacking height of the concrete blocks.

Further, by connecting a tensile member to the back surface of the concrete block and laying this tensile member in the embankment, an embankment having a vertical slope can be constructed, and a vertically high retaining wall can be constructed.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in the figure, a concrete block 1 used for constructing a retaining wall is integrally provided with projections 3 projecting rearward at the same height as the face plate 2 at positions on both sides of the rear face of the rectangular face plate 2. A vertical hole 4 having a large diameter is provided in the protrusion 3 so as to vertically pass therethrough, and a drain hole 5 is provided in the center of the face plate 2 having a rough surface, a smooth surface, and a colored surface so as to penetrate back and forth. It has a different structure.

The projecting lengths of both projections 3 in the concrete block 1 toward the rear may be selected in accordance with the conditions of the place of use.
The shape may be such that it has a planar size such that long vertical holes 4 can be formed around 0 cm. The above-mentioned size of the vertical hole 4 can secure a sufficient space for putting concrete.

Further, the protruding positions of both the protrusions 3 are such that when the face plates 2 are shifted in the half pitch width direction and the concrete blocks 1 are stacked vertically, the protrusions 3 are vertically stacked so that the vertical holes 4 communicate with each other. Is set to.

As shown in FIG. 2, in the footing foundation D installed on the ground A where the retaining wall is constructed, a hole 6 communicating with the vertical hole 4 vertically penetrates at a position where the projection 3 of the concrete block 1 overlaps. Thus, the reinforcing bar 7 pulled out from the foundation D into the hole 6 to stand up and the lower part of the wire rod 8 arranged in the vertical hole 4 are connected. As the wire rod 8, PC steel wire or the like is used in addition to the reinforcing bar.

2 and 3, a tensile member 10 is connected to a connecting member 9 fixed to the back surface of the concrete block 1, and the tensile member 10 is laid in the embankment B to form a reinforced embankment. The block 1 is used as a wall material. The connecting member 9 is preferably made of antiseptic material such as synthetic resin or ceramic.

Next, a method of constructing a retaining wall using the concrete block 1 will be described.

First, the foundations D are arranged in a plane on the ground A on which the retaining wall is to be constructed, then the concrete blocks 1 are arranged in a plane on the foundation D, and the stack of the blocks 1 is sequentially raised upward. Repeat. At this time, the wire rod 8 is connected to the reinforcing bar 7 of the foundation D, and the concrete blocks 1 are stacked while inserting the vertical hole 4 into the wire rod 8. In the illustrated case, the wire rod 8 is a combination of a vertical member and a horizontal member, but the present invention is not limited to this.

After stacking the concrete blocks 1 at a predetermined height, the vertical holes 4 are filled with concrete from the upper part, and the vertical holes 4 communicating vertically and the holes 6 of the foundation D are filled with concrete. The concrete pillar C reinforced with the wire rod 8 integrally with the foundation D is constructed on the back side of the concrete block 1, and the stacked concrete blocks 1 are reinforced by the concrete pillar C. The hole 6 of the foundation D is not always necessary.

As described above, by stacking the concrete blocks 1 on the upper side and constructing the concrete columns C, it is possible to construct an embankment having a vertical retaining wall by the concrete blocks 1 as shown in FIG.

Further, at the time of constructing a retaining wall by the concrete block 1, a sheet-shaped, mesh-shaped, or tape-shaped tension member 10 is connected to the connecting member 9 provided on the back side of the concrete block 1 so as to compress and pull soil. When the reinforced embankment is constructed by alternately laying the material 10 on the soil in a horizontal state, the concrete block 1
It is possible to reduce the earth pressure that acts on and to build a high retaining wall in the vertical direction. If a pile is driven into the tensile member 10 so as to penetrate the tensile member 10, the strength will be further increased.

[0021]

As described above, according to the present invention, a concrete column integrated with a foundation can be constructed on the back side of the stacked concrete blocks, the standing strength of the concrete blocks is improved, and the vertical height of the concrete blocks is increased. Can build a high embankment retaining wall.

Further, since the tension material is connected to the back surface of the concrete block and the tension material is laid inside the embankment, the earth pressure on the concrete block can be reduced by constructing the reinforced embankment, and the retaining wall with a higher vertical height can be obtained. Can be built.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a concrete block used in the construction method of the present invention.

[Figure 2] Partial vertical section of the retaining wall

FIG. 3 is a plan view of the same as above.

[Explanation of symbols]

 1 Concrete block 2 Face plate 3 Projection 4 Vertical hole D Foundation 8 Wire rod 10 Tensile rod

Claims (2)

[Claims] 1. A concrete block in which a vertical hole having a large diameter penetrates vertically is provided on a back surface of the concrete block, and the blocks are sequentially stacked on a foundation so that the vertical holes communicate with each other. , A method for constructing a retaining wall, which comprises forming concrete columns fixed to the foundation by arranging the foundation and fixed wire rods and filling the concrete. 2. A concrete block having a projecting portion on the back surface, in which a vertical hole having a large diameter penetrates vertically is used, and the blocks are sequentially stacked on a foundation so that the vertical holes communicate with each other. , Retaining wall characterized by forming concrete columns fixed to the foundation by arranging the foundation and fixed wire rods and filling with concrete, and connecting a tension material to be laid inside the embankment on the back surface of the concrete block How to build.