JPH0782757A - Laying block for retaining wall and retaining wall construction method using same - Google Patents

Abstract

PURPOSE:To precisely apply a block for retaining wall to a curved retaining wall by constituting the block from a front side body enclosed by a short front wall, side walls extending from four side edges of the front wall, top wall, and bottom wall, a rear side body having a constitution similar to that of the front side body, and a web for connecting the front side body and rear side body. CONSTITUTION:A front side body 2 is formed into a thick-walled short board enclosed by a front wall 2s, top wall 2t, and bottom wall 2b. Side walls 2l, 2r, on the left and right sides, are formed from a side edge 2a so as to be oriented at a certain inclination (a) with respect to a perpendicular line to the front wall 2s and at a certain inclination (b) from an intermediate ridge 2c prallel to the side edge. The bottom wall 2b and top wall 2t are formed into horizontal planes which are parallel to each other. A rear side body 3 is spaced a certain distance apart from the body 2, and the body 3 is formed into a thick-walled short board enclosed by a rear side wall 3s, side walls 3l, 3r, top wall 3t, and bottom wall 3b. A web 4 is integrally formed so as to connect the rear side of the body 2 to the front side of the body 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall stacking block used for retaining wall construction having a curvature, and a retaining wall construction method using the retaining block.

[0002]

2. Description of the Related Art Conventionally, for construction of retaining walls such as revetment work, earth retaining work, etc., the construction methods shown in FIGS. That is, the bank 20 is ground to a constant slope to form a slope 21 and the slope 21 and the flat ground 22.
A groove 23 is formed at a constant depth in a portion adjacent to and along the building direction of the retaining wall. Next, after the crushed stones 24 are spread on the bottom surface of the groove 23 to have a constant thickness and rolled,
A fresh concrete is cast in the divided formwork to form the foundation 25. Then, after waiting for the curing and curing of the foundation 25, first, as a first stage, a plurality of stacking blocks 26 such as sap blocks are arranged at a predetermined interval and are laid on the stacking blocks 26 and the back surface thereof. A back-filling concrete 28 is placed between the back-filling stones 27.
Further, in the gaps between the stacking blocks 26, there is a built-in concrete 29 for fixing the positional relationship of the stacking blocks 26.
Is filled. From this, first the stacking block 2 of the first stage
6 is fixed and sequentially stacked up in the second and third stages, and each time by placing and fixing the back-inclusion stone 27, the back-concrete concrete 28, and the body-concrete concrete 29, the purpose is fixed. It was to form a retaining wall of height.

Further, in many retaining wall constructions, the backing concrete 28 is often omitted, and this construction method is as shown in FIG. A blank 30 is placed between the blank and the blank 3
0 in the gap between the stacking block 26 and the concrete 29
Was to be filled. This punching plate 30 is provided for the purpose of distinguishing the body-concrete concrete 29 and the back-filling crush stone 27 at the time of filling, and is taken out after the filling (arrow a). In this way, the blank plate 30 is arranged for each step and construction is performed.

By the way, a generally used stacking block 26 has a rectangular front surface as shown in FIG. 10, and the stacking method is commonly called "valley stacking". However, the longitudinal direction of the front face of the block is placed with an inclination of about 45 ° with respect to the horizontal direction, and the blocks are arranged alternately in each stage. This trough stacking method is adopted because the barrel concrete 29, which is placed in each stage at the time of stacking, is spread simultaneously between the stacking blocks 26 in the upper and lower stages so that the upper and lower stages are integrated. This is because the purpose is to fix them.

[0005]

However, in the case where the above-mentioned valley stacking method is adopted, there is no problem when the retaining walls are connected in a substantially straight line, but the connecting wall is bent at a constant curvature (hereinafter referred to as "retaining wall"). , Abbreviated as “curve retaining wall.”), There was a problem. That is, as shown in the drawing of FIG. 9, when the slope gradient θ is adopted for the construction of the curved retaining wall having the curvature radius Rb, the curvature radius at the uppermost stage is Rt. now,
When the central angle of the curved retaining wall is α, the difference ΔL between the continuous length of the first stage of the curved retaining wall (hereinafter abbreviated as “retaining wall length”) Lb and the uppermost retaining wall length Lt. Is

[0006]

## EQU1 ## ΔL = Lb-Lt = 2π × (Rb-Rt) × α
It is represented by ° / 360 °. This ΔL becomes positive when the curved retaining wall is a convex curve, and the retaining wall length L becomes shorter toward the uppermost stage, and conversely becomes negative when the curved retaining wall is a concave curve. The retaining wall length L becomes longer as it goes up.

In order to adjust such ΔL, conventionally, at the stage of stacking, the lower joint was made large, the joint was narrowed as it went upward, and the block edge was damaged. . However, such a method is not a preferable method from the viewpoint of ensuring a certain strength. Further, when the radius of curvature is small, ΔL becomes large, and it may be difficult to deal with such a method. Some loading blocks 26
It is conceivable that the number of arrays is changed for each stage by removing the above. However, as can be seen from FIG. 10, the stacked building blocks 26 are combined with each other in the upper and lower parts, which is a difficult structure.

Further, the shape of the stacking block 26 can be made smaller as it goes up (or down), but several kinds of stacking blocks 26 must be created and the various numbers must be managed. It is very complicated in reality. In order to absorb the difference in the retaining wall length at the upper and lower ends, a front surface triangular concrete concrete 31 as shown in FIG. 13 has been conventionally laid. However, this intermediate area concrete 31
Although there are strict standards for the construction of, it was difficult to comply with it at the actual site, and there was a problem with strength. Furthermore, such a construction not only spoils the aesthetics of the retaining wall, but also requires disposing a deformation of the stacking block 26, a so-called "yakumono", which is very complicated in terms of implementation.

Further, there are various problems in stacking the stacking blocks 26. That is, as shown in FIG. 12, there is a complexity of construction in which the support 33 must be arranged for positioning in the stacking block 26 that is stacked on the upper stage, and this is not performed according to the regulation. There have been various problems such as the stacking block 26 positioned when the plate 30 is pulled out is moving.

Therefore, the present invention has been made in view of these problems and aims to solve them, and by combining two kinds of stacking blocks, it is possible to deal with retaining walls of various curvatures. It provides a wall block and a retaining wall construction method using the block.

[0011]

In order to achieve the above object, the retaining wall stacking block of the present invention is constructed as follows. One of the stacking blocks (hereinafter referred to as “A block”) is a rectangular front wall, side walls extending rearward from both side edges of the front wall, a top wall extending rearward from an upper edge of the front wall, and a front wall. Front body surrounded by a bottom wall extending rearward from the lower edge, a rectangular rear wall, side walls extending forward from both side edges of the rear wall, and a top wall extending forward from the upper edge of the rear wall. , And a rear face body surrounded by a bottom face wall extending forward from a lower edge of the rear face wall, the front face wall and the rear face wall are kept in parallel, and the front face body and the rear face body are connected at a constant interval. A holding web, and both side walls of the front body are formed with a certain inclination outward from a right angle with respect to the front wall, and one side wall of the both side walls of the rear body is a rear wall. To the outside of the right angle In addition to being formed with a constant slope, the other side wall is formed with a constant slope inside the right angle with respect to the rear wall, and the top walls and the bottom walls are the same. It is characterized in that it is formed in a horizontal position.

Further, the front wall and the rear wall are inclined rearward with a certain gradient. The other stacking block (hereinafter referred to as “B block”) is a rectangular front wall, side walls extending rearward from both side edges of the front wall, a top wall extending rearward from the upper edge of the front wall,
And a front body surrounded by a bottom wall extending rearward from a lower edge of the front wall, a rectangular rear wall, side walls extending forward from both side edges of the rear wall, forward from an upper edge of the rear wall. A rear face body surrounded by a extending top face wall and a bottom face wall extending forward from the lower edge of the rear face wall, the front face wall and the rear face wall are kept in parallel, and the front face body and the rear face body are fixed. A web that is connected and held at intervals
The side walls of the front body are formed with a certain inclination inward from the right angle to the front wall, and one side wall of the both side walls of the rear body is outside the right angle to the rear wall. Is formed with a constant inclination, the other side wall is formed with a constant inclination inward from the right angle with respect to the rear wall, and further, the top walls and the bottom walls, respectively. It is characterized in that they are formed in the same horizontal plane position.

Further, the front wall and the rear wall are inclined rearward with a certain gradient. Next, the retaining wall construction method by using the above A block and B block in combination comprises the following steps. A side wall inclined toward the inside of the rear face body of the A block,
A first step in which a certain number of A blocks and B blocks are alternately arranged by making the side walls of the B block which are inclined toward the outside of the rear face body correspond to each other and abutting each bottom wall against the upper surface of the foundation.

The front wall of the A block and the front wall of the B block are filled with a back-filled crushed stone between the rear wall of each block and the retaining wall slope and rubbing the side walls of each front body. 2nd to move and position the front-back position appropriately
Process. The third step of filling the trunk concrete to the side surface position of the web between the front body and the rear body of each positioned block.

Further, the side contact position between the lower A block and the B block does not coincide with the side contact position between the upper A block and the B block, and the inner side of the rear face body of the A block is prevented. The A block and the B block are placed on the top wall of the already arranged lower block array so that the side wall on the inclined side and the side wall on the outside of the rear face body of the B block correspond to each other. A fourth step in which a fixed number of pieces are alternately arranged.

A step of repeating the second to fourth steps until a predetermined retaining wall height is reached. The third
In the process, it is also possible to carry out the injection of the barrel concrete after stacking a plurality of stages.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of a retaining wall stacking block according to the present invention will be described in detail with reference to the drawings. 1 and 2 are overall perspective views showing each of a pair of retaining wall stacking blocks of this embodiment, FIG. 3 is a cross-sectional view showing the combined state thereof, and FIG. 4 is of this embodiment. FIG. 3 is a vertical cross-sectional view of a retaining wall stacking block showing a stacked state.

One stacking block (hereinafter abbreviated as "A block") 1 is composed of a front body 2, a rear body 3 and a web 4. The front body 2 has a substantially square front shape, and has a front wall 2s formed rearward with a certain inclination β, left and right side walls 21 and 2r extending rearward from both side edges 2a of the front wall 2s, and a front surface. It is formed in a thick rectangular plate shape surrounded by a top wall 2t extending rearward from an upper edge of the wall 2s and a bottom wall 2b extending rearward from a lower edge of the front wall 2s.

The left and right side walls 2l, 2r have a constant inclination a outside the right angle from the side edge 2a to the front wall 2s, and a ridge 2c parallel to the side from the middle. It is formed to have a constant inclination b inside. The bottom wall 2b and the top wall 2t are formed in horizontal planes parallel to each other.

The rear face body 3 is arranged at a constant distance from the front face body 2, and has a rear face wall 3s having a substantially parallel positional relationship with the shape of the front face wall 2s, and the rear face wall 3s. Meat surrounded by left and right side walls 3l, 3r extending forward from both side edges 3a, a top wall 3t extending forward from an upper edge of the rear wall 3s, and a bottom wall 3b extending forward from a lower edge of the rear wall 3s. It is formed in a thick rectangular plate shape.

Of the left and right side walls 3l, 3r, one side wall 3r has a constant inclination c outside the right angle from the side edge 3a to the rear wall 3s, and from the middle of the side wall 3r. It is formed with a constant slope b inside by a fold crest 3c parallel to the side. The other side wall 3l has a constant inclination e from the side edge 3a to the rear surface wall 3s at a right angle to the rear side wall 3s, and from the middle of the side wall 3l has a constant slope inside by a fold ridge 3c parallel to the side edge. It is formed with f.

The bottom wall 3b and the top wall 3t are formed in parallel horizontal planes, and the top walls 2
The t and 3t and the bottom walls 2b and 3b are formed at the same horizontal plane position. In addition,
The inclinations c and e of the left and right side walls 3l and 3r of the rear face body 3 are set to be the same.

The web 4 has a rod shape with a substantially rectangular cross section,
The rear side of the front body 2 and the front side of the rear body 3 are integrally formed so as to be connected to each other. The connecting position of the web 4 is set at a position slightly lower than the central portion. This is to lower the position of the center of gravity of all of them. The cross-sectional area of the web 4 is set according to the required strength, but is set smaller than the cross-sectional area of the front body 2 so that a space is formed between the front body 2 and the rear body 3. Is configured.

The web 4 of this embodiment has a rectangular cross section, but the cross section is not limited to this and the front body 2 and the rear body 3 can be connected to each other. Any shape such as a circular shape, an elliptical shape, and other polygonal shapes may be used. Next, the other stacking block (hereinafter abbreviated as “B block”) that is combined with the A block 1 will be described. The main constituent part thereof is configured almost in the same manner as the A block 1, and is composed of a front body 11, a rear body 12, and a web 13.

The front body 11 has a front surface of a substantially square shape, and has a front wall 11s formed with a certain inclination β toward the rear.
Left and right side walls 11l and 11r extending rearward from both side edges 11a of the front wall 11s, a top wall 11t extending rearward from an upper edge of the front wall 11s, and a bottom wall 2b extending rearward from a lower edge of the front wall 11s. It is formed in the shape of an enclosed thick rectangular plate.

The left and right side walls 11l, 11r,
Is formed with a certain inclination g from the side edge 11a to the front wall 11s inward of a right angle. The bottom wall 11b and the top wall 11t are formed in horizontal planes parallel to each other. The rear face body 12 is arranged at a constant distance from the front face body 11, and has a positional relationship that substantially matches the shape of the front face wall 11s and that is in a substantially parallel positional relationship.
2s, left and right side walls 12l, 12r extending forward from both side edges 3a of the rear wall 12s, a top wall 12t extending forward from the upper edge of the rear wall 12s, and a rear wall 12 respectively.
It is formed in a thick rectangular plate shape surrounded by a bottom wall 12b extending forward from the lower edge of s.

Of the left and right side walls 12l, 12r, one side wall 12r is formed with a constant inclination h outside the right angle from the side edge 12a to the rear wall 12s. The other side wall 12l has a side edge 1
It is formed with a constant inclination i from 2a to the inside of the rear wall 12s at a right angle. The bottom wall 12b and the top wall 12t are formed in parallel horizontal planes, and the top walls 11t and 12t and the bottom walls 11b and 12b are formed in the same horizontal plane position. There is.

The right and left side walls 3 of the rear body 3 described above
Webs 1 and 3r are set to have the same inclinations c and e.
Since 3 is configured similarly to the web 4 of the A block 1, the details are omitted. By the way, in the present embodiment, the slopes a and g of the side walls of the front bodies 2 and 11 of the A block 1 and the B block 10 are set to be the same, but the invention is not limited to this. . Furthermore, the rear face body 3,
The inclinations c and e and the inclinations h and i of the side wall 12 are set to be the same, but the invention is not limited to this. If necessary, they may be formed slightly differently. Also,
The angle is not always limited, and the inclination is appropriately selected in consideration of the thickness of each front body 2, 11 or the rear body 3, 12 and the size and strength of the block. is there.

Furthermore, when the inclination of the right side wall 3r of the rear surface body 3 of the A block 1 is set to the inside, the left side wall 12l of the rear surface body 12 of the B block 10 is combined.
Are formed so as to be inclined outward. A as above
The blocks 1 and B block 10 are combined as follows. As shown in FIG. 3, first, the front walls 2s and 11s are arranged side by side so as to be aligned with each other, and the side walls 2r and 3r and the side walls 11l and 12l of each other are
Alternatively, the side walls 2l, 3l and the side walls 11r, 12r are placed in contact with each other and rubbed against each other (hereinafter abbreviated as "standard arrangement"). Next, while rubbing, the A block 1 or the B block 10 is slidably moved forward or backward along each side wall. The amount of sliding at this time is the length from the side edge 2a of the side wall 2r to the ridge 2b.

By moving back and forth in this way,
When the A block 1 is moved forward with the B block 10 as a reference, the sum of the horizontal lengths of the front walls of the two blocks 1 and 10 is extended by ΔLf, and conversely, the A block 1 is moved backward. When it is moved to, it is contracted by ΔLb. In the present embodiment, when the A block is moved in the front-back direction by approximately 5 cm, ΔLf or Δ
The inclination angle of each side wall is set so that Lb moves approximately 3 cm.

Next, the above A block 1 and B block 1
A method for constructing a curved retaining wall, which is performed by combining 0 with each other, will be described below with reference to the drawings. FIG. 5 is a vertical sectional view showing a building process of this embodiment, and FIG. 6 is a front view showing a part of the building retaining wall. 7 and 8 are plan views showing the positional relationship of the combinations of the blocks of this embodiment.

Since the slope formation, the laying of cobblestones, and the placing of the basic concrete are the same as those of the conventional retaining wall construction, the same reference numerals are given and the description thereof will be omitted. The construction of the stacking blocks of the present invention is performed by an arrangement called so-called "fabrication". As shown, on the foundation 25,
First, as the first stage, the side wall 3r inclined toward the inside of the rear surface body 3 of the A block 1 and the rear surface body 12 of the B block 10
Of the bottom wall 2b, 3b, 11b, 12b so as to correspond to the side wall 12l inclined toward the outside of the base 2.
A block and a B block are alternately arranged in a fixed number so as to be in contact with the upper surface of the plate 5.

Next, the rear wall 3s of each of the blocks 1 and 10,
The lining stones 27 are laid between the 12s and the slope 21, and the side walls 2r and 11l of the front bodies 2 and 11 are rubbed together for positioning. Then, the body-mounted concrete 29 is filled between the front face bodies 2 and 11 and the rear face bodies 3 and 12 of the blocks 1 and 10, respectively. At this time, the filling position of the torso concrete 29 is not reached to the top walls 2t and 3t but to the side face position (HL) of the webs 4 and 13 (see FIG. 5).

As described above, the arrangement and fixing of the first stage is completed first, and then the side contact position 14 between the lower A block 1 and the B block 11 and the side contact position between the upper A block and the B block. 15 and A block 1 and B block 11 are combined in the same manner as described above so that a certain number of A blocks and B blocks are alternately placed on the already installed lower block. Arrange. At this time, as shown in FIG. 4, the bottom walls 2b and 11b of the upper front bodies 2 and 11 are replaced by the top walls 2t and 1t of the lower front bodies 2 and 11, respectively.
1t, and the bottom walls 3b, 12 of the rear face bodies 3, 12 of the upper stage
The b is placed so as to be in contact with the top walls 3t and 12t of the lower rear bodies 3 and 12.

By repeating the above steps, the blocks 1 and 10 of this embodiment are stacked until the predetermined retaining wall height is reached. As shown in FIG. 6, an A block 1 is provided for each stage.
By changing the overlapping amounts L ₁ , L ₂ , ... Between the B block 10 and the B block 10, the retaining wall length can be changed as it goes upward.

Therefore, in the case of a curved curved retaining wall having a convex curve, as shown in FIG. 7, the A block 1 is rubbed forward from the B block 10 and the A block 1 is rotated slightly inward, that is, the other. The angle formed by the front walls 2s and 11s is -Δ
It is installed by rotating it by R (the rotation direction is defined as-in the clockwise direction). As a result, one set of A block and B
When combined with a block, the horizontal length can be extended and a part of the convex curved surface can be formed. By repeating this combination in the same row, it is possible to make the retaining wall length of the row longer than the standard arrangement and to form a series of blocks having a convex curved surface.

Although illustration is omitted, in the state of FIG.
When the block is moved to the rear of the B block, the retaining wall length can be made shorter than the standard arrangement while keeping the convex curved surface. Contrary to the above, in the case of a curved curved retaining wall having a concave surface, as shown in FIG.
The block A is rubbed rearward and the A block 1 is rotated slightly outward, that is, the angle formed by the front walls 2s and 11s is rotated by + ΔR. This makes it possible to reduce the lateral length and configure a part of the concave curved surface by combining one set of the A block and the B block. By repeating this combination in the same row, it is possible to make the retaining wall length of the row shorter than the standard arrangement and to form a series of blocks having a concave curved surface.

Although not shown, as in the above,
When the A block is moved to the front of the B block in the state of FIG. 8, the retaining wall length can be made longer than the standard arrangement while maintaining the concave curved surface. As above, A block 1
The B block 10 and the B block 10 are offset from each other in the front-rear direction and are slightly rotated outward or inward so that the retaining wall length and the curvature can be appropriately accommodated.

[0039]

[Construction example] Retaining wall height 4 m, normal gradient tan θ = 4/10,
ΔL when the radius of curvature Rb = 25 m and the central angle γ = 20 degrees
From the above [Formula 1], Rt = 23.4 m and ΔL = about 70 cm. Also, the uppermost retaining wall length is approximately 10 m, and the front shape is AB with 50 cm x 50 cm.
If blocks are used, it is necessary to stack 20 blocks horizontally and 8 blocks vertically on the entire retaining wall. In the uppermost stage, the front wall of the AB block is flush with the front wall, so that it is necessary to lengthen the retaining wall toward the lower stage. Therefore, in order to extend 70 cm at the bottom, the distance between A block and B block is 70 cm ÷
(20-1) == It is good to extend by about 2.9 cm.

[0040]

[Effects] With the above structure, the present invention has the following effects. A block in which the side wall of the front body is inclined to the outside and a block in which the side wall is inclined to the inside are combined, and the inclined side walls are rubbed against each other, appropriately moved in the front-rear direction, and slightly rotated, whereby the front wall The continuous length can be changed, and a concave or convex curved surface with various curvatures can be formed. As a result, there is an effect that it is possible to perform a block wall retaining wall construction work that accurately corresponds to a curved concave retaining surface having a concave surface or a convex surface.

Since a rear face body having a cross-sectional shape substantially similar to that of the front face body is provided, and these are connected by a web, and a constant space is provided between them, a filling-in concrete is filled into this space. By doing so, the blocks can be more firmly connected to each other. Since the front body and the rear body are provided so that they come into contact with each other, positioning can be performed without using the back crush stones, and 2-3 steps without filling the trunk concrete in each step. It is also possible to fill the barrel concrete together.

Since the rear surface wall is formed on the rear surface body,
There is an advantage that the need for a punching plate is eliminated and the contact with the back-filled stones is ensured. Since the blocks are rubbed against each other, more reliable strength can be secured as compared with the conventional method of changing the gap between joints.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing one of a pair of retaining wall stacking blocks of the present embodiment.

FIG. 2 is an overall perspective view showing the other of the pair of retaining wall stacking blocks of the present embodiment.

FIG. 3 is a cross-sectional view showing a combination state of one set of retaining wall stacking blocks of the present embodiment.

FIG. 4 is a vertical cross-sectional view of a retaining wall stacking block of the present embodiment.

FIG. 5 is a vertical cross-sectional view showing a building process of this embodiment.

FIG. 6 is a front view showing a part of the building retaining wall of the present embodiment.

FIG. 7 is a plan view showing a combined state of retaining wall stacking blocks of the present embodiment.

FIG. 8 is a plan view showing a combined state of retaining wall stacking blocks of the present embodiment.

FIG. 9 is an explanatory diagram showing the relationship between the curvature and the length of the curved retaining wall by drawing.

FIG. 10 is a front view of a partial cross-section showing a retaining wall construction state of a conventional example.

11 is a vertical cross-sectional view of FIG.

FIG. 12 is a vertical cross-sectional view showing a building process of a conventional example.

FIG. 13 is a front view showing a part of a conventional construction retaining wall.

[Explanation of symbols]

1 ... A block 2 ... Front body
2s ... front wall 2l, 2r ... side wall 3 ... rear surface body
3s ... rear wall 3l, 3r ... side wall 4 ... web
10 ... B block 11 ... Front body 11s ... Front wall 11
1, 11r ... Side wall 12 ... Rear surface body 12s ... Rear surface wall 12
1, 12r ... Side wall 13 ... Web

Claims (6)

[Claims] 1. A rectangular front wall (2s), side walls (2r, 2l) extending rearward from both side edges (2a) of the front wall (2s), and an upper edge of the front wall (2s). A front body (2) surrounded by a top wall (2t) extending rearward and a bottom wall (2b) extending rearward from a lower edge of the front wall (2s), and a rear wall (3s) forming a rectangular shape, Side walls (3r, 3d) extending forward from both side edges (3a) of the face wall (3s), respectively.
3l), a rear surface body (3) surrounded by a top wall (3t) extending forward from the upper edge of the rear wall (3s) and a bottom wall (3b) extending forward from the lower edge of the rear wall (3s).
And a web (4) for keeping the front wall (2s) and the rear wall (3s) parallel to each other, and for connecting and holding the front body (2) and the rear body (3) at a constant interval, And the side walls (2r, 2l) of the front body (2) are formed with a certain inclination outside the right angle with respect to the front wall (2s), and the both side walls (3r) of the rear body (3). , 3l), one side wall (3r or 3l) is formed with a certain inclination outside the right angle with respect to the rear wall (3s), and the other side wall (3l or 3r) is Rear wall (3
s) is formed with a certain inclination inward from the right angle, and the top walls (2t, 3t) and the bottom walls (2b, 3b) are formed in the same horizontal plane position. The retaining block for retaining walls. 2. The retaining block for a retaining wall according to claim 1, wherein the front wall (2s) and the rear wall (3s) are inclined rearward with a constant gradient. 3. A rectangular front wall (11s), side walls (11r, 11l) extending rearward from both side edges (11a) of the front wall (11s), and an upper edge of the front wall (11s). A top wall (11t) extending rearward, and a bottom wall (11t) extending rearward from the lower edge of the front wall (11s).
A front body (11) surrounded by, a rectangular rear wall (12s), side walls (12r, 12l) extending forward from both side edges (12a) of the rear wall (12s), a rear wall ( 12s) a top wall (12t) extending forward from the upper edge, and the rear wall (12s)
A rear face body (12) surrounded by a bottom face wall (12b) extending forward from the lower edge of the front face, the front face wall (11s) and the rear face wall (12s) are kept parallel, and the front face body (11) is The back face (12)
A web (13) for connecting and holding and at a fixed interval
And both side walls (11r, 11l) of the front body (11) are
One of the side walls (12r, 12l) of the rear face body (12) is formed with a certain inclination inward from the front wall (11s) at a right angle, and one side wall (12r, 12l) is a rear wall ( 1
2s) is formed with a certain inclination outward from a right angle to the other side wall (12l or 12).
r) is formed with a certain inclination inward from the right angle with respect to the rear wall (12s), and further, the top walls (11t, 12t) and the bottom walls (11b, 12b) are respectively A retaining wall stacking block that is formed on the same horizontal plane position. 4. A front wall (11s) and a rear wall (12).
4. The retaining block for a retaining wall according to claim 3, wherein s) is inclined rearward with a constant gradient. 5. A retaining wall stacking block according to claim 1 or 2 (hereinafter "A block") and a retaining wall stacking block according to claim 3 or 4 (hereinafter referred to as "B") comprising the following steps. Retaining wall construction method using "block"). A side wall inclined toward the inside of the rear face body of the A block,
A first step in which a certain number of A blocks and B blocks are alternately arranged by making the side walls of the B block which are inclined toward the outside of the rear face body correspond to each other and abutting each bottom wall against the upper surface of the foundation. Fill the back wall of each block between the rear wall of the block and the retaining wall slope, and while rubbing the side walls of each front body, move the front and rear positions of the front wall of the A block and the front wall of the B block. The second step of appropriately moving and positioning. The third step of filling the trunk concrete to the side surface position of the web between the front body and the rear body of each positioned block. In addition, the side contact position between the lower A block and B block and the side contact position between the upper A block and B block do not match, and the one that is inclined inside the rear face body of the A block The side wall of B and the side wall inclined toward the outside of the rear face of the B block correspond to each other, and the A block and the B block are alternately fixed on the top wall of the lower block array that has already been installed. Fourth step of placing and arranging the number of pieces. A step of repeating the second to fourth steps until a predetermined retaining wall height is reached. 6. The retaining wall construction method according to claim 5, wherein in the third step, the injecting concrete is carried out after stacking a plurality of stages.