JPH10102517A - Built-up large retaining wall forming method and built-up large retaining wall unit block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a large retaining wall easily by piling up an uppermost block, front blocks in a second stage downward, intermediate blocks and rear blocks stepwise to make depth width larger downward. SOLUTION: Unit blocks composed of an uppermost block A, front blocks B in the second stage downward, intermediate blocks C, rear blocks D, and the like are piled up stepwise. The change value of depth width is set every longitudinal length of the intermediate block C, but an intermediate block C' nearly doubled in longitudinal length is used depending on the applied way of earth pressure. The number of the intermediate blocks C is therefore reduced and can be optionally changed including width length. In addition, stability is increased by protruding the front blocks B or increasing the whole weight of a large retaining wall, and the large retaining wall and sediment are integrated to prevent the collapse of the retaining wall. Unit blocks mass-produced in a factory or the like are therefore built up in regular order to easily construct the large 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 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.

[0008] The following uppermost block A, the front block B below the second stage, the intermediate block C, and the rear block D are stacked in a step-like manner, and a large assembling retaining wall having a depth width becomes lower toward the bottom. The present invention relates to a method for forming a large prefabricated retaining wall, which is characterized by forming a block.

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. An upper locking portion 10 is provided at the upper portion of the block to lock the upper block, and the lower block is provided at the lower portion of 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.

A unit block surrounded by a front wall 1, left and right side walls 2, 3 and a rear wall 4 is provided with a drain hole 5 in the front wall 1 and is engaged with a lower block below the block. The present invention relates to a unit block for an assembling large retaining wall, wherein a lower locking portion 6 is provided.

A unit block formed in a U-shape by a front wall 7 and left and right side walls 8 and 9, wherein a water draining hole 5 is provided in the front wall, and an upper member which is engaged with an upper block above the block. An assembling characterized in that a stop portion 10 is provided, a lower locking portion 6 for locking to a lower block is provided at a lower portion of the block, and a rear joint portion 11 to be connected to a rear block is provided at a rear portion of the block. The present invention relates to a unit block for a large-type large retaining wall.

The front wall 7 is provided with a front retaining wall reinforcing plate portion 16 protruding rearward, and a rear joining portion 11 to be joined to a rear block is provided at a rear portion of the front retaining wall reinforcing plate portion 16. A unit block for an assembled large retaining wall according to claim 3, wherein the unit block is provided.

An upper locking portion 10 which is a plate-shaped unit block and is fixed to an upper block above the block.
Is provided at the lower part of the block, a lower engaging part 6 is provided for engaging with a lower block, a front joint part 12 is provided at a front part of the block, and a rear part is provided at a rear part of the block. The present invention relates to a unit block for an assembling large retaining wall, which is provided with a rear joint portion 11 to be joined to the unit block.

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 the upper block above the block, and a lower portion below the block. Lower locking portion 6 that locks to the lower block
And a unit block for an assembling large retaining wall, characterized in that a front joint portion 12 for joining to a front block is provided at the front of the block.

The rear wall 15 is provided with a rear retaining wall reinforcing plate portion 17 protruding forward, and a front joining portion to be joined to a front block at a front portion of the rear retaining wall reinforcing plate portion 17. A unit block for a large-sized prefabricated retaining wall according to claim 6, wherein 12 is provided.

[0016]

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.

In 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 the 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.

Although the pressure of the earth and sand at the place where the retaining wall is formed is higher below the retaining wall, the depth of the assembled large retaining wall is lower, so the pressure of the earth and sand is calculated to obtain the desired depth width. 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 vertical 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 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.

Since the drainage 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.
A unit block for an assembled large retaining wall suitable for the top 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 front block used in the described invention.

According to the fourth aspect of the present invention, a front retaining wall reinforcing plate 16 protruding rearward is provided on the front wall 7, and is joined to a rear block at the rear of the front retaining wall reinforcing plate 16. Since the rear joint portion 11 is provided, the strength of the unit block itself increases, and the connection strength between the unit blocks also increases.

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

According to the sixth 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.

According to the seventh aspect of the present invention, a rear retaining wall reinforcing plate portion 17 is provided on the rear wall 15 so as to protrude forward, and is joined to a front block at the front portion of the rear retaining wall reinforcing plate portion 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.

[0029]

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

In this embodiment, the uppermost block A, the front block B at the second level or lower, the intermediate block C, and the rear block D are stacked in a stepwise manner, and a large assemblage having a greater depth as it goes down. The present invention relates to a method for forming a large-sized prefabricated retaining wall that forms a 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 is provided at a rear portion of the front retaining wall reinforcing plate portion 16 to be connected to a rear block. 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.

Although 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 in the drawing, 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 hole is 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.

Further, 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.

Further, a rear retaining wall reinforcing plate portion 17 protruding forward is provided on the rear wall 15, and a front joining portion 12 which is joined to a front block at the front of the rear retaining wall reinforcing plate portion 17 is provided. 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 so that the drainage is good.

FIG. 1 shows an example of linking unit blocks before and after.
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 recess. 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 step-like manner, and the depth of each stage 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.

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

A left hole is provided at each of 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 a very 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.

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

Further, since the drain hole 5 is provided in the portion forming the front wall of the assembled retaining wall, the ground at the location 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.

[0065]

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

Further, the pressure of the earth and sand at the place where the retaining wall is formed is greater below the retaining wall, but since this large-sized prefabricated retaining wall has a greater depth below, the pressure of the earth and sand is calculated to obtain the desired depth width. 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.

Also, since the assembled retaining wall has a step-like shape and the vertical direction is open at the stepped portion, the soil is put into the retaining wall to increase the weight of the entire retaining wall and stabilize it. 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 loosen due to rainwater or the like, and the large size is extremely resistant to collapse. A retaining wall can be formed.

Further, 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 an assembling large retaining wall excellent in economical efficiency with reduced raw material cost can be realized.

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

In the third aspect of the present invention, the first aspect
A unit block for an assembled large retaining wall suitable for the front block used in the described invention.

According to the fourth aspect of the present invention, a retaining wall reinforcing plate protruding rearward is provided on the front wall, and a rear connecting portion to be connected to the rear block is provided at the rear of the retaining wall reinforcing plate. Because of the provision, the strength of the unit block itself increases, and the connection strength between the unit blocks also increases.

In the fifth aspect of the present invention, the first aspect
A unit block for an assembled large retaining wall suitable for the intermediate block used in the described invention.

According to the sixth 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 7, 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]

 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 Portion 7 Front Wall 8.9 Side Wall 10 Upper Locking Portion 11 Rear Joint Portion 12 Front joint 13 ・ 14 Side wall 15 Rear wall 16 Front retaining wall reinforcing plate 17 Rear retaining wall reinforcing plate

Claims (7)

[Claims] 1. A large assembling type having a top block A, a front block B at the second stage or lower, an intermediate block C, and a rear block D, which are stacked in a step-like manner, and which have a greater depth toward the bottom. A method for forming a large prefabricated 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 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 to a lower block is provided below the block. A unit block for a large prefabricated retaining wall. 3. A unit block formed in a U-shape by a front wall and left and right side walls, wherein a drain hole is provided in the front wall, and an upper locking portion for locking to an upper block is provided above the block. A unit block for an assembling large retaining wall, wherein a lower engaging portion for engaging a lower block is provided at a lower portion of the block, and a rear joining portion for joining to a rear block is provided at a rear portion of the block. . 4. A front retaining wall reinforcing plate portion projecting rearward from the front wall, and a rear joining portion to be joined to a rear block is provided at a rear portion of the front retaining wall reinforcing plate portion. The unit block for a large-sized prefabricated retaining wall according to claim 3. 5. A plate-shaped unit block, wherein an upper locking portion is provided at an upper portion of the block to lock 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 A unit block for a large prefabricated retaining wall, which is provided with a joint. 6. 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 unit block for an assembling large retaining wall, wherein a lower engaging 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. 7. A rear retaining wall reinforcing plate portion projecting 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 unit block for an assembled large retaining wall according to claim 6, wherein: