JP2931875B2 - Method of forming large prefabricated retaining wall, intermediate block for large prefabricated retaining wall, and rear block for large prefabricated retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an assembled large retaining wall capable of easily forming a super large retaining wall, and a unit block for the assembled large retaining wall.

[0002]

2. Description of the Related Art When forming a retaining wall, a retaining wall can be easily formed by using a concrete retaining wall block.

However, the larger the retaining wall to be formed, the larger the size and weight of the concrete retaining wall block to be used, and the more difficult it is to transport and install the retaining wall block. There is a point.

Accordingly, when a retaining wall to be formed is large, a formwork is assembled in a shape of a retaining wall block required at a retaining wall forming site, and concrete is poured into the formwork to make concrete. There was no other way to form a retaining wall.

[0005] However, this method also has a problem that it is necessary to assemble a formwork or to cast concrete at a retaining wall forming site.

In order to solve the above problems, the present invention divides a retaining wall block into unit blocks to form a super-large retaining wall that cannot be formed by a single block. It is an object of the present invention to provide a method of forming a large retaining wall and a unit block for a large retaining wall.

[0007]

The gist of the present invention will be described with reference to the accompanying drawings.

The following top block A, a front block B at the second or lower level from the top, an intermediate block C, and a rear block D are stacked in a step-like manner, and a large assembling type having a deeper depth toward the bottom. The present invention relates to a method for forming a large-sized prefabricated retaining wall, wherein a wall block is formed.

A: A unit block surrounded by a front wall 1, left and right side walls 2, 3 and a rear wall 4, wherein a drain hole 5 is provided in the front wall 1,
An uppermost block provided with a lower locking portion 6 that locks to a lower block below the block. B is a unit block formed in a U-shape by the front wall 7 and the left and right side walls 8.9, and the front wall 7 is provided with a drain hole 5;
Upper locking part that locks to the upper block above the block
A front block provided with 10, provided with a lower locking portion 6 at a lower portion of the block to lock to a lower block, and provided with a rear connecting portion 11 at a rear portion of the block to be connected to a rear block. C is a plate-shaped unit block, in which an upper locking portion 10 for locking to an upper block is provided at an upper portion of the block, and a lower locking portion 6 for locking to a lower block is provided at a lower portion of the block. An intermediate block in which a front joint 12 is provided at the front to be joined to a front block, and a rear joint 11 is provided at the rear of the block to be joined to a rear block. D A unit block formed in a U-shape by the left and right side walls 13 and 14 and the rear wall 15, and provided with an upper locking portion 10 for locking to an upper block above the block, and a lower block to the lower block below the block. A rear block provided with a lower locking portion 6 for locking and a front joining portion 12 joined to a front block at a front portion of the block.

Further, an upper locking portion 10 which is a plate-shaped unit block and which is locked to an upper block at an upper portion of the block, and a lower locking portion 6 which is locked to a lower block at a lower portion of the block. Provided, a front joint 12 for joining to a front block at the front of the block, and a rear joint 11 for joining to a rear block at the rear of the block. It relates to an intermediate block for retaining walls.

A unit block formed in a U-shape by the left and right side walls 13 and 14 and the rear wall 15 is provided with an upper locking portion 10 for locking to an upper block above the block and a lower portion below the block. Lower locking portion 6 that locks to the lower block
And a front joint portion 12 for joining to a front block is provided at the front of the block, and relates to a rear block for an assembled large retaining wall.

A rear retaining wall reinforcing plate 17 is provided on the rear wall 15 so as to protrude forward, and a front joint of the rear retaining wall reinforcing plate 17 is joined to a front block. 12. A rear block for an assembled large retaining wall according to claim 3 , wherein 12 is provided.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

According to the first aspect of the present invention, since the large retaining wall is formed in an assembled manner, each block can be easily transported and installed, and a formwork for forming a concrete retaining wall at a retaining wall forming site is provided. A large retaining wall can be easily formed by sequentially assembling the blocks mass-produced in a factory or the like without assembling one by one or pouring concrete.

Further, the pressure of the earth and sand at the place where the retaining wall is formed is greater below the retaining wall. By forming the retaining wall at the bottom, a large retaining wall that is hard to collapse can be formed.

Further, since each block is joined to an adjacent block in the front-rear direction and is locked to an adjacent block in the up-down direction, each block is formed as a single block as a whole retaining wall when assembled. Each block does not collapse.

Further, since the assembled retaining wall has a step-like shape, and the vertical direction is opened at a portion where a step is formed, by putting earth and sand into the retaining wall, the weight of the entire retaining wall is increased to be stable. The degree of increase can be increased, and the earth and sand at the place where the retaining wall is formed is integrated with the retaining wall, so that a large retaining wall that is more difficult to collapse can be formed.

Further, since the drain hole 5 is provided in a portion forming the front wall of the assembled retaining wall, the ground where the retaining wall is formed is not loosened by rainwater or the like.
It is possible to form a large retaining wall that is extremely resistant to collapse.

Further, the amount of concrete used for each unit block is smaller than that of the integrated concrete retaining wall, and the raw material cost is reduced.

According to the second aspect of the present invention, the first aspect is provided.
Using the invention described an intermediate block for prefabricated large retaining wall suitable for intermediate block.

In the invention according to claim 3 , claim 1 is
A rear block for prefabricated large retaining wall that is suitable for rear block for use in the invention described.

According to the fourth aspect of the present invention, the rear wall 15 is provided with a rear retaining wall reinforcing plate 17 projecting forward, and is joined to a front block of the front portion of the rear retaining wall reinforcing plate 17. Since the front joint portion 12 is provided, the strength of the unit block itself is increased, and the connection strength between the unit blocks is also increased.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

In the present embodiment, the uppermost block A, the front block B at the second or lower level from the top, the intermediate block C, and the rear block D are stacked in a stepwise manner, and the lower the depth, the lower the width. The present invention relates to a method for forming a large-size prefabricated retaining wall block having a large-sized prefabricated retaining wall block.

Each unit block is set to a size that can be easily transported and installed.

The uppermost block A includes a front wall 1, left and right side walls 2,
A unit block surrounded by a rear wall 4 and provided with a drain hole 5 in the front wall 1 and a lower locking portion 6 provided at a lower portion of the block to lock to a lower block. .

The rear wall 4 is inclined.
It is configured to easily receive the pressure of the earth and sand at the place where the retaining wall is to be formed. That is, a part of the lateral pressure of the earth and sand that is about to collapse is converted downward, and each unit block is pressed downward from above the retaining wall to stabilize it.

The left and right side walls 2 and 3 have a left hole 18 and a right hole.
19 are provided so that when earth and sand are put into the interior of the large-sized prefabricated retaining wall, the earth and sand in the left and right unit blocks are united to make the retaining wall hard to collapse.

The front block B includes a front wall 7, right and left side walls 8,
9 is a unit block formed in a U shape by 9
A drain hole 5 is provided in the front wall 7, an upper locking portion 10 is provided at the upper portion of the block to lock the upper block, and a lower locking portion 6 is provided at the lower portion of the block to be locked to the lower block. Is a unit block provided with a rear joining portion 11 joined to a rear block at a rear portion.

Further, a front retaining wall reinforcing plate portion 16 protruding rearward is provided on the front wall 7, and a rear connecting portion 11 to be joined to a rear block is provided at a rear portion of the front retaining wall reinforcing plate portion 16. ing.

The thickness of the front retaining wall reinforcing plate 16 is twice the thickness of the left and right side walls 8 and 9, and is the same as the thickness of the intermediate block C described later.

The left and right side walls 8, 9 are provided with the left holes 18,
Notches 20 and 21 are provided for the same purpose as the right hole 19.

In the drawing, the set position of the drain hole 5 of the front wall 7 is different from that of the front wall 1 of the uppermost block A, but the set position of the drain hole 5 is the same between the front wall 7 and the front wall 1. This does not affect the effects of the invention.

The intermediate block C is a plate-shaped unit block, and is provided with an upper locking portion 10 for locking to an upper block above the block, and a lower locking portion for locking to a lower block below the block. This is a unit block in which a section 6 is provided, a front joining section 12 for joining to a front block is provided at the front of the block, and a rear joining section 11 for joining to a rear block is provided at the rear of the block.

The left and right holes are provided before and after the intermediate block C.
18, right hole 19, notch 22 ・ 21 for the same purpose as notch 20 ・ 21
23 are provided.

The thickness of the intermediate block C is twice as large as that of the left and right side walls 8 and 9. When assembling a large retaining wall, the adjacent front blocks B are combined with one intermediate block C. The connection allows adjacent large assembled retaining walls to be connected and integrated, and the number of intermediate blocks C used for assembling the large retaining wall is reduced.

The number of intermediate blocks C used in the same manner as described above is reduced by using an intermediate block C 'in which the front and rear length of the intermediate block C is doubled. In the same manner, by using a unit block in which the front and rear length of the intermediate block C is multiplied by an integer, it is possible to reduce the number of intermediate blocks C to be used when forming an ultra-large retaining wall with many stacked stages. .

The rear block D includes left and right side walls 13 and 14, and a rear wall.
15 is a unit block formed in a U-shape by
Upper locking part that locks to the upper block above the block
10 is a unit block in which a lower engaging portion 6 for engaging a lower block is provided at a lower portion of the block, and a front joining portion 12 for joining to a front block is provided at a front portion of the block.

The left and right side walls 13 and 14 have left holes 18 and
Right hole 19, cutout for the same purpose as cutouts 20, 21, 22, 23
24 and 25 are provided.

The rear wall 15 is provided with a rear retaining wall reinforcing plate 17 projecting forward, and a front joining portion 12 joined to a front block at the front of the rear retaining wall reinforcing plate 17. Is provided.

The thickness of the rear retaining wall reinforcing plate 17 is twice the thickness of the left and right side walls 13 and 14, similarly to the front retaining wall reinforcing plate 16.

Also, a drain hole 5 is provided in the rear wall 15 to improve drainage.

FIG. 1 shows an example of linking the preceding and following unit blocks.
0 and 11 are shown.

FIG. 10 shows that the rear joint 11 and the front joint 12 are formed in a slit shape, the joining plate 27 is inserted into the slit, and the side walls 8, 9, 13, 14 and the intermediate blocks C, C are formed. And a bolt 28 is inserted into a bolt insertion hole 31 provided in each of the joining plate members 27, and the bolt 28 is fastened by a nut 29 to connect the unit blocks.

FIG. 11 shows a state in which the end portions of the side walls 8, 9, 13, 14 and the intermediate blocks C, C 'are recessed, and a U-shaped joining member 30 is fitted so as to cover the depressions. And side wall 8
.9,13,14 and intermediate blocks CC 'and joining members 30
A bolt 28 is inserted into a bolt insertion hole 31 provided in each of the above, and the bolt 28 is fastened by a nut 29 to connect the unit blocks.

In the illustrated method of locking the upper and lower unit blocks, the upper locking portion 10 is formed as a convex portion and the lower locking portion 6 is formed as a concave portion. A metal plate or the like may be attached to a portion inside the large retaining wall assembled to increase the connection strength of the unit block so as to straddle the upper and lower unit blocks.

In this embodiment, in order to stack the upper and lower unit blocks without gaps using mortar, grooves 26 are provided above and below the unit blocks, and the mortar is provided in the grooves 26.

The front and rear lengths of the intermediate block C are the same as the front and rear lengths of the left and right side walls 8 and 9 of the front block B and the right and left side walls 13 and 14 of the rear block D.
The lower locking portion 6 is designed to be set at equal intervals.

Hereinafter, the assembled large retaining wall will be described in detail.

Each unit block is stacked in a stepwise manner, and the depth of each unit is set by the intermediate blocks C and C '.

In the present embodiment, the change value of the depth width is set for each of the front and rear lengths of the intermediate block C. However, depending on how the pressure of the earth and sand is applied, the depth width does not change or the intermediate block C does not change. The width may be arbitrarily changed or may be set to the width of C 'or the width of the intermediate block set to another length.

Further, the lowermost stage buried in the ground of the assembled large retaining wall is configured such that the front block B projects from the front walls 1, 7 above the lowermost stage. It is designed not to collapse forward by the pressure of.

The large retaining wall is filled with earth and sand. By increasing the weight of the entire large retaining wall, the stability of the large retaining wall is increased, and the large retaining wall and the earth and sand are integrated to form the retaining wall. It is hard to collapse.

In addition, left holes are provided at the left and right ends of the assembled large retaining wall.
If holes such as 18 and right hole 19 are open, earth and sand will flow out of this part, so left and right holes 18 and right holes 19 on both left and right sides and cutouts 20, 21, 22, 23, 24, 25, etc. It is good to block all the holes by.

Since the present embodiment has been described above, it is easy to transport and install each block, and even when forming an ultra-large retaining wall that cannot be formed by a single block, the retaining wall forming site A large retaining wall can be easily formed by assembling each unit block mass-produced in a factory or the like without assembling a formwork for forming a concrete retaining wall at a time or pouring concrete. .

Further, the pressure of the earth and sand at the place where the retaining wall is formed is larger below the retaining wall, but since the large-sized prefabricated retaining wall has a greater depth below, the pressure of the earth and sand is calculated to obtain a desired depth width. By forming the retaining wall at the bottom, a large retaining wall that is hard to collapse can be formed.

Each unit block is joined to adjacent unit blocks in the front-rear direction and is locked to adjacent unit blocks in the vertical direction. Therefore, when assembled, the entire retaining wall becomes a single block when assembled. It is formed and each unit block does not collapse.

Further, since the drain hole 5 is provided in a portion forming the front wall of the assembled retaining wall, the ground at the place where the retaining wall is formed does not loosen due to rainwater or the like.
It is possible to form a large retaining wall that is extremely resistant to collapse.

[0059]

As described above, according to the present invention, since the large retaining wall is formed in an assembled manner, each block can be easily transported and installed, and a formwork for forming a concrete retaining wall at the retaining wall forming site. An innovative method of forming large retaining walls that can easily form large retaining walls by assembling blocks mass-produced in factories etc. one by one without assembling individual concrete or pouring concrete. Becomes

The pressure of the earth and sand at the place where the retaining wall is formed is greater below the retaining wall. By forming the retaining wall at the bottom, a large retaining wall that is hard to collapse can be formed.

Each block is joined to an adjacent block in the front-rear direction, and is locked to an adjacent block in the up-down direction. Therefore, when assembled, the entire retaining wall is formed as a single block when assembled. Each block does not collapse.

Further, since the assembled retaining wall has a step-like shape, and the vertical direction is open at a portion where a step is formed, by putting earth and sand into the retaining wall, the weight of the entire retaining wall is increased to stabilize. The degree of increase can be increased, and the earth and sand at the place where the retaining wall is formed is integrated with the retaining wall, so that a large retaining wall that is more difficult to collapse can be formed.

Further, since a drain hole is provided in a portion forming the front wall of the assembled retaining wall, the ground where the retaining wall is formed does not become loose due to rainwater or the like, and it is extremely hard to collapse. A retaining wall can be formed.

In addition, the amount of concrete used for each unit block is smaller than that of the integral type concrete retaining wall, so that a method for forming a large-sized prefabricated retaining wall with reduced cost of raw materials and excellent economy can be obtained.

In the invention according to claim 2 , claim 1
A unit block for an assembled large retaining wall suitable for the intermediate block used in the described invention.

According to the third aspect of the present invention, there is provided the first aspect.
A unit block for an assembled large retaining wall suitable for the rear block used in the described invention.

In the invention according to claim 4 , a retaining wall reinforcing plate protruding forward is provided on the rear wall, and a front joint is connected to a front block of the retaining wall reinforcing plate at a front portion thereof. Since the unit is provided, the strength of the unit block itself increases, and the connection strength between the unit blocks also increases.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of this embodiment.

FIG. 2 is an explanatory side view of the present embodiment.

FIG. 3 is an explanatory cross-sectional view of the embodiment viewed from above.

FIG. 4 is an explanatory front view of the present embodiment.

FIG. 5 is an explanatory perspective view of an uppermost block A of the present embodiment.

FIG. 6 is an explanatory perspective view of a front block B of the present embodiment.

FIG. 7 is an explanatory perspective view of an intermediate block C of the present embodiment.

FIG. 8 is an explanatory perspective view of an intermediate block C ′ according to the present embodiment.

FIG. 9 is an explanatory perspective view of a rear block D of the embodiment.

FIG. 10 is a perspective view illustrating an example of a connection example of the present embodiment.

FIG. 11 is a perspective view showing another example of the connection example of the present embodiment.

[Explanation of symbols]

 Reference Signs List A Top block B Front block C Intermediate block D Rear block 1 Front wall 2.3 Side wall 4 Rear wall 5 Drain hole 6 Lower locking part 7 Front wall 8.9 side wall 10 Upper locking part 11 Rear joint 12 Front joint 13 ・ 14 Side wall 15 Rear wall 17 Rear retaining wall reinforcing plate

Claims (4)

(57) [Claims] 1. A large assembly having the following uppermost block A, a front block B at the second or lower level from the top, an intermediate block C, and a rear block D, which are stacked in a stepwise manner, and which has a greater depth toward the lower side. A method for forming an assembling large retaining wall, comprising forming a retaining wall block. Note A: The uppermost block, which is a unit block surrounded by a front wall, left and right side walls, and a rear wall, wherein a drain hole is provided in the front wall, and a lower locking portion for locking a lower block below the block is provided. . B A unit block formed in a U-shape by the front wall and the left and right side walls, a drain hole is provided in the front wall, an upper locking portion for locking to an upper block is provided above the block, and a lower portion is provided below the block. A front block provided with a lower locking portion for locking to a lower block, and a rear connecting portion to be connected to a rear block at a rear portion of the block. C is a plate-shaped unit block, wherein an upper locking portion for locking to an upper block is provided at an upper portion of the block, a lower locking portion for locking to a lower block is provided at a lower portion of the block, and a front portion of the block is provided. An intermediate block provided with a front joint portion to be joined to a front block and a rear joint portion to be joined to a rear block at a rear portion of the block. D A unit block formed in a U-shape by left and right side walls and a rear wall, wherein an upper locking portion for locking to an upper block is provided at an upper portion of the block, and a lower member which is locked to a lower block at a lower portion of the block. A rear block provided with a stop portion and a front joint portion joined to a front block at the front of the block. 2. A plate-like unit block, wherein an upper locking portion is provided at an upper portion of the block, the upper locking portion locking the upper block.
The lower part of the block is provided with a lower locking part that locks to the lower block, the front part of the block is provided with a front joint part that is connected to the front block, and the rear part of the block is connected to the rear block at the rear part An intermediate block for a large prefabricated retaining wall, which is provided with a joint. 3. A unit block formed in a U-shape by left and right side walls and a rear wall, wherein an upper locking portion for locking an upper block is provided at an upper portion of the block, and a lower block is connected to a lower block at a lower portion of the block. A rear block for an assembling large retaining wall, wherein a lower locking portion for stopping is provided, and a front connecting portion for connecting to a front block is provided at a front portion of the block. 4. A rear retaining wall reinforcing plate portion protruding forward from the rear wall, and a front joint portion to be joined to a front block is provided at a front portion of the rear retaining wall reinforcing plate portion. The rear block for a large-sized prefabricated retaining wall according to claim 3, wherein: