JPH06287968A - Method for constructing retaining wall, and concrete block for retaining wall - Google Patents

Abstract

PURPOSE:To construct the retaining wall of a dam by an easy and safe method only by crane piling by vertically and horizontally piling box type retaining wall blocks having no ceiling nor bottom part stepwise. CONSTITUTION:Plural kinds of box type retaining wall blocks 1 different in depth dimension which have no ceiling nor bottom part are prepared. An internal partitioning wall is provided in the inner part, and a hollow part is formed by the side wall and internal partitioning wall of the box type retaining wall block 1. The box type retaining wall block 1 having a large depth is arranged on a foundation 8. The box type retaining wall blocks 1 having smaller depths are successively piled thereon. Crane piling is conducted stepwise from the lower part to the upper part as the whole. A vertical reinforcement 9 is also inserted between the box type retaining walls 1 by utilizing no ceiling nor bottom part. Concrete 10 is then charged to bury the vertical reinforcement 9.

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 a retaining wall for a residential land development site, a water storage dam, a sabo dam, etc.

[0002]

2. Description of the Related Art Conventionally, there is no need to assemble a scaffold for work for assembling a formwork, and a concrete block is piled up on the rear side of a rectangular base body which eliminates the danger to the operator. A front wall and a rear wall are formed by stacking a large number of legged blocks formed by projecting two legs in a zigzag manner and stacking them so that the legs of the upper and lower legged blocks overlap each other. At the same time, the front wall and the rear wall are connected by a suitable number of intermediate vertical walls formed by joining a number of stacked tubular blocks with concrete, while the remaining space between the front wall and the rear wall is There is known a method of constructing a dam-like structure in which a filling material made of poorly mixed concrete or crushed stone is filled in the space (see Japanese Patent Publication No. 56-11812).

[0003]

However, in the above-mentioned prior art, since the dam-shaped structure is constructed by the legged block and the tubular block, the legged block and the tubular block must be joined with concrete. In addition, there is a problem that it is necessary to have a complicated shape leg block, such as making a step on the front and rear of the base of the leg block, forming a flat surface and a tapered surface in order to easily stack them. There was a problem that became. In view of these circumstances, the present invention eliminates the above-mentioned drawbacks of the prior art, and with a simple configuration, it is not necessary to prepare two types of blocks, a legged block and a tubular block, and join them with concrete. Using the box type retaining wall block, connect the vertical direction with reinforcing bars and stack the ones with decreasing depth as you go up in a stepwise fashion. It is intended to be provided.

[0004]

The present invention is intended to solve the above-mentioned problems, and employs the following technical means. The method for constructing a retaining wall according to claim 1, wherein a box-type retaining wall block having no ceiling or bottom is provided with an intermediate partition wall, and a hollow portion surrounded by both side wall portions and the intermediate partition wall is provided. Prepare multiple types of box-type retaining wall blocks with different depth dimensions, stack these box-type retaining wall blocks with the larger depth at the bottom, and stack the smaller depth blocks one at a time while Also, connect them in parallel, insert the reinforcing bars in the vertical direction using the part without the ceiling and bottom, and connect the vertical directions of the box type retaining wall block with the reinforcing bars to fill these vertical reinforcing bars. We adopted the technical means of filling the concrete with concrete and constructing it. Further, in a retaining wall concrete block in which a retaining wall is constructed by stacking on the concrete foundation of the invention according to claim 2 to form a retaining wall, a hollow section having a rectangular cross section is formed to form appropriate positions on the upper and lower surfaces of the intermediate partition wall and the side wall portion. We adopted a technical means called a concrete block for a retaining wall that has irregularities and has different depths.

[0005]

As a result of adopting the above technical means, the present invention has a simple structure, does not require on-site casting with a formwork, can be manufactured in a factory, can be loaded on a crane at the site, and has a longitudinal reinforcing bar. It can be connected and integrated by using. Also, as the earth pressure decreases toward the top, the retaining wall concrete block can be made smaller, so the cost can be reduced, and the one with a smaller weight can be used as the height increases, so the work is easier. Become. Therefore, the work can be safely and easily proceeded without danger.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 is a plan view of a box type retaining wall block in the first embodiment according to the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a side view of the same. 4 and 5 are plan views of blocks having a reduced depth. Reference numeral 1 is a box-type retaining wall block composed of a front wall, a rear wall, and left and right side walls, and a middle partition wall 2 is formed in the middle portion. 3 is a left and right side wall. Further, the unevenness portion 4 for positioning is formed on the upper and lower sides of the side wall 3 toward the front. In addition, 5 is a drain hole, 6 is a box type retaining wall block 1
Is a hoisting tool for hoisting with a crane or the like, and 7 is a hollow portion partitioned by the partition wall 2. The box type retaining wall block 1 is prepared in several types having different depth dimensions. This is a similar shape except that the dimensions of the concave and convex portions of the middle partition wall 2, the left and right side walls 3 and the dimensions of the hollow portion 7 are determined according to the depth dimension due to the different depth dimensions. Next, the method of the present invention for constructing a retaining wall such as a dam using the box type retaining wall block 1 shown in FIGS. 1 to 5 will be described in detail with reference to FIGS. 6 and 7. First, after excavating the ground to an appropriate depth at the place where the dam should first be constructed, the foundation concrete 8
Hit the site. Then, the required height and length are stacked on the basic concrete 8. In this case, the box type retaining wall blocks 1 having the largest depth dimension are stacked vertically and horizontally by an appropriate number of steps (4 steps in this embodiment) corresponding to the required height and length. By utilizing the hollow portions 7 of the box type retaining wall blocks 1 that are stacked and arranged in parallel, vertical reinforcing bars 9 are planted so as to be integrated from the basic concrete 8 for vertical connection and fixation, and concrete is poured. . Next, the box type retaining wall blocks 1 having a medium depth dimension are stacked in an appropriate number of stages (three stages in this embodiment), arranged side by side, and vertical reinforcing bars 9 are similarly planted, and concrete is poured.
Further, similarly, the box type retaining wall block 1 having the smallest depth dimension is similarly stacked in an appropriate number of steps (three steps in this embodiment), the vertical reinforcing bars 9 are planted side by side, concrete is poured, and fixed by connection. The dam retaining wall will be constructed. For this reason, as shown in FIG. 6, it becomes stepwise from the lower side to the upper side. Therefore, since the work can be performed firmly and using the stepped portion, it is possible to perform work extremely safely, and it is possible to use the concrete block for the retaining wall with a smaller depth toward the upper part. The cost can be reduced. Also,
Another embodiment will be described with reference to FIGS. By providing a plurality of intermediate partition walls 2, it is possible to increase the hollow portion 7 and at the same time reduce the thickness of the intermediate partition wall 2. The effect of this is that it is possible to appropriately fill the earth and sand without filling the entire hollow portion with concrete. Furthermore, when the box-type retaining wall block 1 is connected by forming recesses on both sides symmetrically,
As shown in FIG. 10, a hollow portion 7 is formed in the connecting portion. Since the other points are the same as those of the first embodiment described above, the description thereof will be omitted. Particularly, the points of stacking on the upper side are the same as those in FIG. 6, and therefore the figures are omitted.

[0007]

As a result of adopting the above configuration, the present invention provides
The following effects can be obtained. (1) Except for foundation concrete, it is not necessary to cast in-situ, box type retaining wall block can be produced in the factory, and
Crane loading is possible. (2) Reinforcing bars can be planted in the vertical direction by utilizing the hollow portion of the box-type retaining wall block, so that they can be integrated and a solid retaining wall can be completed. (3) Since the depth dimension becomes smaller as it goes up in the vertical direction, and as a result, a stepped portion is formed, work can be safely carried out using this stepped portion. Is. (4) As the load of earth pressure is reduced, the depth of the upper concrete block for the retaining wall is made smaller, so that the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a box type retaining wall block according to a first embodiment of the present invention.

FIG. 2 is a front view showing a box type retaining wall block in the embodiment.

FIG. 3 is a side view showing a box type retaining wall block in the embodiment.

FIG. 4 is a plan view showing a short type of box type retaining wall block according to the first embodiment of the present invention.

FIG. 5 is a plan view showing a short type of box type retaining wall block according to the first embodiment of the present invention.

FIG. 6 is a schematic side view showing a state in which the box type retaining wall blocks in the above embodiment are stacked to form a retaining wall.

FIG. 7 is a schematic plan view showing a state where the box type retaining wall blocks in the above embodiment are stacked to form a retaining wall.

FIG. 6 is a plan view showing a box type retaining wall block according to another embodiment.

FIG. 8 is a front view showing a box type retaining wall block according to another embodiment.

FIG. 9 is a schematic plan view showing a state in which box type retaining wall blocks are stacked to form a retaining wall in the other embodiment.

[Explanation of symbols]

1 ... Box type retaining wall block 2 ... Partition wall 3 ... Side wall 4 ... Positioning uneven part 5 ... Drainage hole 6 ... Hanging device 7 ... Hollow part 8 ... Basic concrete 9 ... Vertical Reinforcing bar 10 ... concrete

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[Procedure amendment]

[Submission date] October 13, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a plan view showing a box type retaining wall block according to a first embodiment of the present invention.

FIG. 2 is a front view showing a box type retaining wall block in the embodiment.

FIG. 3 is a side view showing a box type retaining wall block in the embodiment.

FIG. 4 is a plan view showing a long-type box-type retaining wall block according to the first embodiment of the present invention.

FIG. 5 is a plan view showing a short type of box type retaining wall block according to the first embodiment of the present invention.

FIG. 6 is a schematic side view showing a state in which the box type retaining wall blocks in the above embodiment are stacked to form a retaining wall.

FIG. 7 is a schematic plan view showing a state in which the box type retaining wall blocks in the above embodiment are stacked to form a retaining wall.

FIG. 8 is a plan view showing a box type retaining wall block according to another embodiment.

FIG. 9 is a front view showing a box type retaining wall block according to another embodiment.

FIG. 10 is a schematic plan view showing a state in which box type retaining wall blocks are stacked to form a retaining wall in the other embodiment.

[Explanation of symbols] 1 ... Box type retaining wall block 2 ...
Partition wall 3 ... Side wall 4 ...
Concavo-convex part for positioning 5 ... Drainage hole 6 ...
Hanging device 7 ... ・ Hollow part 8 ...
Foundation concrete 9 ... Vertical rebar 10 ...
concrete

Claims (2)

[Claims] 1. A box-type retaining wall block having no ceiling or bottom, a middle partition wall is provided in the middle portion, and a hollow portion surrounded by both side walls and the middle partition wall is provided. Prepare multiple types of different
These box-type retaining wall blocks are stacked one by one with a large depth at the bottom, and those with a smaller depth are stacked at the same time.
Retaining characterized by inserting rebars using the part without the bottom, connecting the vertical direction of the box type retaining wall block with rebars, and filling with concrete to fill these vertical rebars How to build a wall. 2. A retaining wall concrete block in which a retaining wall is constructed by stacking on a concrete foundation while connecting to form a retaining wall concrete block, and a hollow portion having a rectangular cross section is formed, and uneven portions are formed at appropriate portions on the upper and lower surfaces of a partition wall and side wall portions. A concrete block for retaining walls with different depths characterized by being provided.