JP2016125270A - Block for retaining wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weight-saving and downsized block for retaining wall, which can be easily transported and contributes to expansion of a construction site.SOLUTION: A block for retaining wall 100A comprises a front block 110 with a front wall 111, an inner block 130A and a back block 120 with a back wall 121. A front connection part 132a, which faces a leg part 112 of the front block 110, and a back connection part 132b, which faces a leg part 122 of the back block 120, are formed on the inner block 130A. The leg part 112 of the front block 110 and the leg part 122 of the back block 120 are connected to the front connection part 132a and the back connection part 132b of the inner block 130A by a connection plate 140 and a fixture 150.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a retaining wall block that is stacked on a slope in roads, railways, rivers, residential land development, and the like.

For example, on a slope (slope) of a road or the like, a retaining wall is generally constructed by stacking retaining wall blocks as a retaining wall in order to prevent the slope from collapsing.
Various types of retaining wall blocks of this type have already been proposed, but are usually made of concrete structures. The size varies, but in the case of a large integrated block, the width on the left and right is 1.5 to 3.0 m, the height is 0.5 to 1.5 m, and the depth is about 2.0 to 2.5 m. The weight may be about 1.5 to 3.0 tons.
In the case of such a large retaining wall block, since it is difficult to manually pile up, it is usually performed using a large heavy machine or a construction machine.

However, in construction on a narrow road or a place where a large space cannot be taken, a large heavy machine or construction machine may not be able to cope. In this case, it may be necessary to deal with a small heavy machine or sometimes manually.
On the other hand, when the retaining wall block is small, the number of blocks used on the slope is larger than that of a large block, so that workability is lowered. In addition, when the height of the retaining wall is increased, a considerably large load is applied to the lower block, so that the strength of the small block may be insufficient.

Under such circumstances, a split type retaining wall block has also been proposed in which the size of the front wall of the block remains large and the entire block is divided into two (Patent Documents 1 and 2).
In this type of divided block, the divided portion is reduced in volume, so that weight is reduced. This light weight also provides great handling convenience.

Utility Model Registration No. 3076331 JP 2002-322657 A

  These retaining wall blocks shown in Patent Documents 1 and 2 still have many insufficient points, and there are points to be improved. For example, the divided block portion can be reduced in weight by two divisions, but in the case of a large block, the division into two portions may still be insufficient in weight reduction.

As shown in FIG. 8, the wall block 10 disclosed in Patent Document 1 is usually provided with a pair of connecting legs 11 a on each back side of the front block 11 and the back block 12 which are divided blocks. 12a, the length of each leg (protrusion dimension) is quite large, and the shapes of the front and back are also greatly different.
Similarly, as shown in FIG. 9, the retaining wall block 20 shown in Patent Document 2 is usually provided with a pair of connecting legs on each back side of the front block 21 and the back block 22 which are divided blocks. 21a and 23a are provided, but the length (protrusion dimension) of each leg is quite large, and the shapes of the front and back are also greatly different.
In this case, from the viewpoint of manufacturing, separate molds for the front and the back are required, and the manufacturing is quite troublesome. In addition, even when the finished product is stored, a separate storage place is required, and the storage cost increases. Furthermore, since the apparent volume of the divided block itself is increased by the length of each leg, the storage cost also increases in this respect. Moreover, the fall of the conveyance property at the time of use and the handleability at the time of construction is inevitable.

  Further, at the time of construction, in the retaining wall block 10 disclosed in Patent Document 1, the connection position of the back block 12 is provided on the leg 12a, 12a side of the back block 12 with respect to the front block 11. Although there are advantages that can be adjusted by the large number of connecting holes 13..., The formation of the connecting holes 13 is troublesome because of the large number of holes.

  In the retaining wall block 20 disclosed in Patent Document 2, there is a problem in that the connecting position of the front block 21 and the rear block 22 cannot be adjusted at all, and at the same time, the leg portions 21a, 21a, 22a, 22a Since the connecting portions 23 have a special slope shape, it is difficult to form them.

  The present invention is intended to provide a split type retaining wall block that improves the problems of the conventional block.

  The present invention proposed to solve the above-described problems is a retaining wall block that is stacked on a slope to form a retaining wall, and includes a front block having a front wall, an intermediate inner block, and a rear surface. A back block having a wall, and provided on the back side of the front wall of the front block of the inner block is provided with a front connecting portion facing at least a pair of legs protruding from the back surface of the front wall, and On the back side of the back wall of the back block of the inner block, there is provided a back connecting portion that faces at least a pair of legs protruding from the back surface of the back wall, and the front connecting portion of the inner block and the front block And connecting the connecting plate to the side surface between the back block connecting portion of the inner block and the leg portion of the back block. The by fasteners, in retaining wall block, which comprises integrally linked to each corresponding leg portion of the inner block and the front block and the back block.

  In the present invention, it is desirable that the front block and the back block have the same shape.

  In the present invention, the distance between the front block and the back block can be adjusted by changing the width of the inner block in the direction between the front block and the back block.

  In the present invention, the inner block may be a single type corresponding to one side of a pair of leg portions of the front block and the back block.

  In the present invention, the inner block may be a continuous type corresponding to both sides of the pair of leg portions of the front block and the back block.

According to the present invention, the retaining wall block is divided into the front block, the inner block, and the back block, and the projecting length (height) of each leg portion of the front block and the back block is small. Even if the wall is large, each divided block can be further reduced in weight and size.
Thereby, reduction of manufacturing cost and storage cost can be obtained. In addition, it is easy to carry and good handling is obtained even during construction. As a result, construction is simple and quick, and improvement in workability can be expected. Of course, the miniaturization enables small heavy machinery, construction machinery, and manual handling in construction on narrow roads and places.

According to the present invention, if the front block and the back block have the same shape, the same type of formwork can be shared, and the manufacturing cost can be further reduced.
Moreover, if it is the same shape, separate storage will become unnecessary and the reduction of the further storage cost will be obtained. Since the loading capacity during transportation can be increased, further reduction in transportation cost can be obtained.

According to the present invention, it is possible to adjust the load strength of the entire block by giving variations (changes) to the width and structure of the inner block.
That is, if the width of the inner block is increased, the distance between the front block and the back block, that is, the depth is increased, so that the load strength of the entire block can be increased.
Further, if the structure is changed as a continuous type with respect to the single type inner block, the load strength of the entire block can be increased.
As a result, various usage modes with various changes can be obtained. In other words, it is possible to deal with various conditions and shapes of retaining walls (slopes).

It is the schematic explanatory drawing which showed an example of the retaining wall which uses the block for retaining walls which concerns on this invention. It is the disassembled perspective view which showed an example of the block for retaining walls which concerns on this invention. (A), (b) It is the perspective view which showed the other example of the inner block of the block for retaining walls which concerns on this invention. It is the perspective view which showed the other example of the inner block of the block for retaining walls which concerns on this invention. It is the perspective view which showed the connection (assembly) state of the block for retaining walls shown in FIG. It is the disassembled perspective view which showed an example of the other connection state of the block for retaining walls shown in FIG. It is the perspective view which showed the connection state of the block for retaining walls shown in FIG. It is the perspective view which showed an example of the block for retaining walls proposed conventionally. It is the perspective view which showed an example of the block for retaining walls proposed conventionally.

  FIG. 1 shows a retaining wall 200 for earth retaining formed on a slope 30 such as a road using the retaining wall blocks 100A and 100B according to the present invention. In this retaining wall 200, 210 is a foundation block on which the lowest retaining wall block 200 </ b> A is placed, 220 is a foundation material laid below, and 230 is a retaining wall provided between the retaining walls 200 on the slope 30 side. It is a backing material.

A retaining wall block 100A according to the present invention is as shown in FIG.
In the figure, 110 is a front block forming the front surface of the retaining wall, 120 is a back block forming the back surface of the retaining wall, and 130A is an intermediate inner block sandwiched between these blocks. That is, normally, the retaining wall block 100A is composed of these three divided blocks.

Reference numeral 111 denotes a rectangular (for example, rectangular) front wall of the front block 110, and 112 and 112 project from the rear surface of the front wall 111. For example, a pair of clog-like leg portions 113 extending in the vertical direction in FIG. Are a plurality of connecting holes provided at the upper and lower ends of each leg 112, 112.
Reference numeral 121 denotes a rectangular (for example, rectangular) rear wall of the back block 120, and 122 and 122 project from the rear surface of the rear wall 121. For example, a pair of clog-like legs extending in the vertical direction in FIG. Are a plurality of connecting holes (partially omitted) provided at both upper and lower ends of each leg 122,122.

  131 is a block main body of the inner block 130A extending in the vertical direction in FIG. 2, and 132a and 132a are opposed to the pair of legs 112 and 112 of the front block 110. ) The pair of front connecting portions (partially omitted), 132b and 132b are slightly protruded from the pair of leg portions 121 and 121 of the back block 120 (the protrusion is not limited and can be flat). A pair of back connecting portions 133 is a plurality of connecting holes (partially omitted) provided in the front connecting portions 132a and 132a and the back connecting portions 132b and 132b.

The width of 130A is L1, but this width is not particularly limited. For example, as shown in FIGS. 3A and 3B, the other inner blocks 130B and 130C can have wide widths L2 and L3. Of course, it can be narrower than the width L1.
These inner blocks 130A to 130C are single types corresponding to the leg portions on the front and back sides, but as shown in FIG. It can also be set as the continuous inner block 130D corresponding to the legs on both sides.

  2, 140 is a connecting plate such as a rectangular metal plate or reinforced plastic plate, and 150 is a fixture such as a bolt or nut.

The retaining wall block 100A having such a structure is constructed by assembling each block portion (the front block 110, the inner block 130, and the back block 120), and attaching the connecting plate 140 to each corresponding portion and facing each other. If the connecting plates 140 and 140 are fixed and connected by the fixing tool 150, they are integrated as shown in FIG.
Usually, this assembling and subsequent fixing work is performed at a site where the slope 30 is located, and a retaining wall 200 as shown in FIG. Of course, the retaining wall blocks 100A are stacked in order from the lower side of the slope 30 to the upper side.
The front block 110, the inner block 130, and the back block 120 are integrated in advance at the factory, and the integrated retaining wall block 100A is transported to the construction site and used in a large heavy machine or the like in the same manner as the integrated block. They can also be stacked. Also in this case, there is a method in which the retaining wall block 100A in which the blocks 110, 130, 120 are assembled is transported to the installation site and stacked in the same manner as the integrated block by a large heavy machine or the like. Even when this method is employed, the retaining wall blocks 100A are sequentially stacked from the lower side of the slope 30 to the upper side.

  At this time, since the load received by the block on the upper side of the retaining wall 200 is smaller than that on the lower side, for example, as shown in FIGS. 6 and 7, the front block 110 and the back block 120 are not used without using the inner block 130A. As shown in FIG. 1, it can also be piled up as a retaining wall block 100B on the upper stage side.

In the retaining wall blocks 100A and 100B having such a configuration, since the whole is divided into three parts, the weight of each divided block part can be significantly reduced. Particularly in the inner blocks 130A to 130C, the required volume is small, and a greater weight reduction can be obtained.
Even in the front block 110 and the back block 120, the projecting lengths of the respective leg portions 112, 112, 121, 121 are small, so that the overall shape is a flat shape, and the size can be reduced. ing. Of course, this miniaturization contributes to weight reduction.
Good handling properties can be obtained by reducing the weight and size of the divided blocks. At the time of construction, as a result, construction itself is simplified and high workability is obtained.
Further, if several types of inner blocks 130A to 130D are prepared in advance, various variations can be used for various slopes 30.

  Even at the time of manufacturing, reduction in manufacturing cost including storage cost can be achieved by reducing weight and size. In addition, a reduction in transportation cost can be obtained. Furthermore, if the front block 110 and the back block 120 are not greatly different in shape and have the same shape (the same or the same shape), there will be substantially one type. Cost reduction can be achieved. Of course, the cost reduction during transportation is the same.

  30 slope, 100A, 100B retaining wall block, 110 front block, 111 front wall, 112, 112 leg, 113 connecting hole, 120 back block, 121 back wall, 122, 122 leg, 123 connecting hole, 130A- D Inner block, 131 Block body, 132a, 132a Front connecting part, 132b, 132b Back connecting part, 133 Connecting hole, 140 Connecting plate, 150 Fixing tool, 200 Retaining wall

The present invention proposed to solve the above-described problems is a retaining wall block that is piled up on a slope to form a retaining wall, and includes a concrete front block having a front wall and a concrete block . It consists of a concrete back block having an intermediate inner block and a back wall, and is formed integrally with the front wall on the back side of the front wall of the front block of the inner block and protrudes from the back of the front wall. In addition, a front connecting portion that faces at least one pair of leg portions is provided, and the back side of the back wall of the back block of the inner block is formed integrally with the back wall and protrudes from the back surface of the back wall. at least provided a back coupling portion facing the pair of legs, wherein the distal end portion of the front connecting portion of the inner block front block A front end of the inner block and a front block of the back block, and a front block of the front block and a leg of the front block. A connecting plate is attached to the side surface of the inner block, and a connecting plate is attached to the side surface of the back connecting portion of the abutted inner block and the leg portion of the back block, and the connecting plate is fixed by a fixture, thereby the inner block The retaining wall block is characterized in that the corresponding leg portions of the front block and the back block are connected and integrated .

Claims (5)

In the retaining wall block stacked on the slope to form the retaining wall,
It consists of a front block with a front wall, a middle inner block and a back block with a back wall,
Provided on the back side of the front wall of the front block of the inner block is a front connecting portion that faces at least a pair of legs protruding from the back surface of the front wall,
Provided on the back side of the back wall of the back block of the inner block is a back connecting portion that faces at least a pair of legs protruding from the back surface of the back wall;
A connecting plate is attached to the side surface between the front connecting portion of the inner block and the leg portion of the front block, and the back connecting portion of the inner block and the leg portion of the back block,
A retaining wall block characterized in that the connecting plate is connected to and integrated with the corresponding leg portions of the inner block, the front block, and the back block by a fixture.   The retaining wall block according to claim 1, wherein the front block and the back block have the same shape.   3. The retaining wall according to claim 1, wherein an interval between the front block and the back block can be adjusted by changing a width of the inner block in a direction between the front block and the back block. block.   The retaining wall block according to claim 1, wherein the inner block is a single type corresponding to one side of a pair of legs of the front block and the back block. .   4. The retaining wall according to claim 1, wherein the inner block is a continuous type corresponding to both sides of a pair of legs of the front block and the back block. 5. block.

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