JP3101761B2 - Retaining wall block, construction method of retaining wall using the same, and retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a retaining wall block and a method for constructing a retaining wall.

[0002]

2. Description of the Related Art FIG. 13 shows an example of a retaining wall constructed by stacking blocks, in which 1 is an embankment, 2 is a foundation concrete, and 3 is a material such as split stone or gravel laid on the slope of the embankment 1. A backing material is shown, and a retaining wall block 15 is continuously arranged in the left-right direction from the foundation concrete 2 to the front of the backing material 3 and is piled up. To construct.

Conventionally, the form of the retaining wall block 15 used for such a retaining wall is, for example, a rectangular parallelepiped cylindrical body, which is continuous in the left and right horizontal directions, and is stacked obliquely upward along the slope. . Then, concrete is poured into the hollow portion of the retaining wall block 15 or crushed stone is filled, and the weight of the retaining wall itself is increased by these fillers 14 to resist the earth pressure from the back.

[0004]

In the case where the slope is a curved surface when viewed from a plane, the retaining wall blocks 15 are arranged side by side along this curved surface. Since the outer shape is a rectangular parallelepiped, a gap 16 is formed between horizontally adjacent retaining wall blocks 15 as shown in FIG.

Further, since the curved surface is an inclined surface, the degree of curve differs between the upper retaining wall block 15 and the lower retaining wall block 15 as shown in FIG. The gap 16 is larger than that in the upper row, and a large trapezoidal gap 16 is formed as shown in FIG.

[0006] These gaps 16 are formed by closing a formwork at the construction site before filling the inside of the retaining wall block 15 with the filler 14 such as concrete, and the gaps 16 having different sizes for each step. The work of closing was not easy and required a lot of time and effort.

Further, since the outer shape of the retaining wall block 15 is a rectangular parallelepiped shape, the retaining wall block 15 is disposed on the slope inclining rearward, and the upper retaining wall block 15 easily shifts rearward.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to construct a retaining wall on a curved surface by stacking blocks.
There is no gap between the blocks that are continuous in the left-right direction, so there is no need to close the gap, workability is good, and the same shape block can flexibly deal with different curves and the retaining wall block and it is used An object of the present invention is to provide a retaining wall construction method and a retaining wall.

[0009]

In order to achieve the above-mentioned object, the present invention firstly forms a front wall, a rear wall and a center beam connecting the front and rear walls into a substantially I-shaped plane, and further comprises a front wall and a rear wall. The gist of the invention is that the wall is formed so that the protruding direction is shifted right and left with respect to the center beam at the center.

Secondly, the front wall and the rear wall are formed with thin steps so that the front ends thereof are shifted right and left in the front and rear directions. The gist of the invention is that it is provided to be inclined so as to protrude backward.

Fourthly, a notch for communication is formed in the lower part of the center beam to discharge the filler for integrating the adjacent blocks. Fifth, prevention of the block stacked on the upper stage from shifting backward. The gist of the present invention is that a projection is provided on the upper part.

[0012] As a construction method of the retaining wall, a front wall, a rear wall, and a center beam for connecting the front wall and the rear wall are formed in a substantially I-shaped plane, and the front wall and the rear wall project right and left around the center beam. Using a retaining wall block formed so that the direction is shifted back and forth, the front ends of the front wall and the rear wall of the left and right adjacent retaining wall blocks are superposed back and forth with an appropriate length and an appropriate angle to be continuous, and the front wall is In addition, it is intended to fill the hollow portion surrounded by the rear wall and the center beam with a filler such as concrete and integrate the left and right retaining wall blocks.

As the retaining wall, a front wall, a rear wall, and a center beam connecting them are formed in a substantially I-shaped plane, and the front wall and the rear wall project right and left around the center beam at right and left directions. Using a retaining wall block formed so as to be shifted to the left and right, the front ends of the front wall and the rear wall of the retaining wall block adjacent to the left and right are superimposed back and forth with an appropriate length and an appropriate angle back and forth, and the retaining wall block is connected. Stacked upward, filling the hollow part surrounded by the front wall, rear wall and center beam with a filler such as concrete to integrate the left and right retaining wall blocks into a flat linear shape or any curved shape It is the gist.

According to the first aspect of the present invention, since the retaining wall block is formed in a substantially I-shaped plane by the front wall, the rear wall, and the center beam connecting these, the front wall and the rear wall projecting left and right are formed. The retaining wall block can be made continuous by polymerizing the front and rear ends. In this case, if the retaining wall blocks adjacent to the left and right are alternately positioned back and forth, a planar linear retaining wall can be constructed, and a planar curved retaining wall can be constructed by appropriately selecting the positional relationship before and after the polymerization. . In addition, the front wall and the rear wall are formed so that the protruding direction is shifted forward and backward on the left and right centering on the center beam, so the block that continues left and right can easily move the front end of the front wall and the rear wall back and forth. It can be polymerized. Therefore, even when the angle of the polymerization is set to be freely set to be continuous with respect to the curved surface, no gap is generated between adjacent blocks.

According to the second aspect of the present invention, in addition to the above-mentioned functions, the front wall and the rear wall are formed with thin step portions at the front end portions. Shading is formed, and the reflection of the whiteness of the concrete block can be reduced.

According to the third aspect of the present invention, in addition to the above operation, the front wall and the rear wall are inclined so as to protrude backward with respect to the center beam, so that when the blocks are stacked along the slope, Blocks can be stacked horizontally. Therefore, the rearward displacement of the block can be minimized.

According to the fourth aspect of the present invention, in addition to the above-described operation, the communicating portion for discharging the filler for integrating the adjacent blocks is formed by a notch formed in the lower portion of the center beam. Therefore, a large communicating area can be secured and a retaining wall with good integration can be constructed.

According to the fifth aspect of the present invention, in addition to the above-described operation, since the projection for preventing the block stacked on the upper stage from shifting backward is provided on the upper portion, the shifting of the block on the upper stage from the rear is reliably performed. Can be prevented.

According to the sixth aspect of the present invention, the length and angle of the front and rear overlapping portions of the front wall and the rear wall of the left and right adjacent retaining walls can be freely determined on site. By using blocks of the same shape, a retaining wall can be constructed without any gap between adjacent blocks on the slope of any curve. Therefore, the work for closing the gap is not required, and the workability is improved.

Further, since the block is constituted by the front wall, the rear wall, and the center beam, a large hollow portion is formed when the blocks are connected. Therefore, if the hollow portion is filled with a filler such as concrete, a heavy retaining wall can be easily constructed.

According to the present invention, the front wall, the rear wall, and the center beam connecting them are formed in a substantially I-shaped plane, and the front wall and the rear wall are centered on the center beam. Using a retaining wall block formed so that the projecting direction is shifted forward and backward on the left and right,
The front ends of the front and rear walls of the left and right adjacent retaining wall blocks are overlapped with each other at appropriate lengths and angles in the front and rear direction to be continuous, and the retaining wall blocks of the same shape are stacked by stacking the retaining wall blocks upward. With use, it is possible to arbitrarily construct a shading surface without any gap between the retaining wall blocks, whether the retaining wall has a planar straight shape or a planar curved retaining wall.

[0022]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a plan view showing an embodiment of the retaining wall block of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a side view of the same, FIG. 4 is a vertical sectional front view of the same, FIG. Numeral 6 is a perspective view from below, and the retaining wall block 5 of the present invention is formed into a substantially I-shaped plane as a basic shape by a front wall 6, a rear wall 7 and a middle beam 8 connecting them.

The front wall 6 and the rear wall 7 are formed with thin portions 6a and 7a at their leading ends so that the protruding directions of the front wall 6 and the rear wall 7 are shifted right and left with respect to the center of the joint with the center beam 8. The thin portions 6a, 7a are formed by forming tapered surfaces 6b, 7b on the front side of the front wall 6 and the rear wall 7 projecting leftward from the center toward the vicinity of the front end in the illustrated example. It is done by doing. The rear surface side of the front wall 6 protruding leftward is formed as a tapered surface 6e that is slightly tapered,
The rear surface side of the rear wall 7 was formed as a flat surface 7 d perpendicular to the center beam 8.

The boundary between the tapered surfaces 6b, 7b and the thin portions 6a, 7a at the tips is not a curved surface but a stepped portion 6c, 7b.
7c.

The front wall 6 and the rear wall 7 protruding rightward have the same tapered surfaces 6b, 7b and step portions 6c, 6c, 7c are formed to have thin portions 6a, 7a at the front end, and a middle beam 8 at the front side of the front wall 6.
And a front surface side of the rear wall 7 is formed into a tapered surface 7e which is slightly tapered.

As a result, the front wall 6 and the rear wall 7 protrude left and right from the center beam 8 such that the front end portions are shifted left and right.
That is, the front wall 6 and the rear wall 7 projecting left and right from the center beam 8 are opposed to each other in parallel and at equal intervals at the left and right positions, and project at right angles to the center beam 8. In the illustrated example, the front wall 6 and the rear wall 7 projecting to the left are located behind the portion projecting to the right. In addition, a haunch is formed in each of the coupled portions of the center beam 8, the front wall 6, and the rear wall 7, and the end face of a portion protruding rearward of the rear wall 7 and protruding forward of the front wall 6. The end face of the portion was formed as a tapered surface in the front-rear direction.

Further, as shown in FIG. 4, the front wall 6 and the rear wall 7 are inclined backward with respect to the center beam 8. In this case, the front side and the rear side of the front wall 6 and the rear wall 7 are inclined rearward, but the upper and lower surfaces are formed in a horizontal plane.

At the lower part of the center beam 8, a notch 9 for communication for discharging a filler such as concrete or crushed stone for integrating the adjacent retaining wall block 5 is formed in a mountain shape.

A projection 10 for preventing the rearward displacement of the retaining wall block 5 piled on the upper stage is provided on the upper surface of the center beam 8 at a coupling portion with the front wall 6.
Is provided. The shape of the projection 10 is, for example, a baseball baseball shape as shown.

A method for constructing a retaining wall using such a retaining wall block 5 will be described below. There are various types of construction methods for constructing the retaining wall. Here, the case of the slope collapse protection method will be described as an example. The embankment 1 is performed, and the straightening of the slope and the straightening of the base surface are simultaneously performed, and the foundation concrete 2 is cast on the base surface. Next, the first-stage retaining wall block 5 is laid on the foundation concrete 2. In the case where the slope is a plane straight line, as shown in FIG.
The rear flat surface 7d protruding leftward from is positioned parallel to the slope.

In this state, the portion of the rear wall 7 projecting to the right has a tapered surface 7b on the rear side and a thin portion 7a at the tip, and the portion of the rear wall 7 projecting to the left. Since it is located forward, a gap is formed between itself and the slope. Therefore, if the tip of the rear wall 7 protruding leftward of the retaining wall block 5 adjacent to the right is inserted into this gap portion, the left protruding portion of the rear wall 7 of the rear wall 7 adjacent to the left and right and the right side And overlap (wrap) at the front and rear positions.

In the same manner as the rear wall 7, the front wall 6 has the left and right projections of the front wall 6 of the left and right retaining wall blocks 5 overlapped (wrapped) at the front and rear positions.

In this way, the left and right adjacent retaining wall blocks 5 are sequentially connected while overlapping at the front end portions of the front wall 6 and the rear wall 7. In this case, the overall length of the retaining wall can be adjusted by adjusting the polymerization length.

In this state, there is a gap behind the retaining wall block 5 for filling the backing material 3, and the retaining wall block 5 is in an independent state. Therefore, the gap behind the retaining wall block 5 is filled with a backing material 3 such as split stone or gravel, compacted by compaction, and furthermore, the middle beam 8 and the front wall 6 of the adjacent retaining wall block 5 and the rear. The hollow portion 11 surrounded by the wall 7 is filled with a filler 14 such as concrete or crushed stone to weight the entire wall body and resist the earth pressure from the back slope.

The filler 14 filled in the hollow portion 11 flows into the adjacent retaining wall block 5 through the notch 9 formed at the lower portion of the center beam 8, whereby the adjacent retaining wall block 5 is formed. Mutually integrated.

In order to further stack the retaining wall block 5 on the retaining wall block 5 which is continuous in the lateral direction as described above, as shown in FIG. It is located in the center of the lower hollow portion 11 and arranged in a staggered manner in the upper and lower stages. In this state, the rear end of the portion of the upper retaining wall block 5 projecting leftward from the front wall 6 abuts on the projection 10 of the lower retaining wall block 5, and the upper retaining wall block 5 is displaced rearward. Will be blocked.

The upper and lower retaining wall blocks 5 have hollow portions.
Since the portions 11 communicate in a staggered manner in the upper and lower directions, the upper and lower retaining wall blocks 5 can be integrated.

Further, since the front wall 6 and the rear wall 7 are formed so as to be inclined so as to protrude rearward, even if the retaining wall block 5 is set in parallel with the slope, the upper surface is kept horizontal. There is no shift.

When the slope is a curved surface, as shown in FIG. 8, the flat surfaces 6d and 7 of the front wall 6 and the rear wall 7 respectively.
d is set to the tangent position of the curved surface curve, and in this state, the front ends of the front wall 6 and the rear wall 7 of the left and right adjacent retaining wall blocks 5 are overlapped with each other in the same manner as described above, whereby the curved surface of the slope is obtained. The retaining wall block 5 can be laid along the line.

In this case, by adjusting the overlapping length of the front walls 6 and the overlapping length of the rear walls 7 to different lengths and adjusting the overlapping angle, it is possible to cope with different curved surfaces. And
Since there is no gap between the adjacent retaining wall blocks 5, there is no need to perform an operation of closing the gap.

In the retaining wall constructed by stacking such retaining wall blocks 5, the tapered surface 6b and the step 6c of the front wall 6 appear on the front surface, and the upper and lower retaining wall blocks 5 are also arranged in a staggered manner. As a result, an uneven surface is formed on the upper and lower sides. As a result, a shading portion is formed on the front surface of the retaining wall, and the reflection of light rays due to the whiteness of the retaining wall block 5 made of concrete is reduced, and it is not dazzling.

Furthermore, when the retaining wall block 5 is manufactured, it is possible to apply a split-stone-like or pseudo-rock-like pattern to the front surface of the retaining wall block 5 with a paint or the like by formwork, so that the natural scenery is not spoiled. it can.

[0043]

As described above, according to the retaining wall block of the present invention, since the retaining wall block is formed in a substantially I-shaped plane by the front wall, the rear wall, and the center beam connecting these, the front wall protruding left and right. The retaining wall block can be made continuous by superposing the tip of the rear wall back and forth. In this case, if the retaining wall blocks adjacent to the left and right are alternately positioned back and forth, a planar linear retaining wall can be constructed, and a planar curved retaining wall can be constructed by appropriately selecting the positional relationship before and after the polymerization. .

Further, the front wall and the rear wall are formed so that the protruding directions are shifted right and left around the center beam at the center.
The block that is continuous left and right can overlap the front end of the front wall and the rear wall back and forth.Therefore, by setting the angle of this overlap freely and changing the overlap length of the front wall and the rear wall. Even when the surface is continuous with the curved surface, there is no gap between adjacent blocks.

A shaded portion is formed on the front surface of the retaining wall after the construction, and the reflection of the concrete block due to whiteness can be reduced, so that, for example, a driver of an automobile does not become a visual obstacle.

Further, since the front wall and the rear wall are inclined rearward with respect to the center beam, when the blocks are stacked along the slope, the blocks are stacked in a horizontal state, so that not only the workability is good but also the workability of the blocks is improved. Rearward displacement can be minimized.

Further, since the communicating portion for discharging the filler for integrating the adjacent blocks is formed by a notch formed at the lower portion of the center beam, a large communicating area can be secured and a retaining wall having good integration can be obtained. Can be constructed.

Further, since the protrusion for preventing the block stacked on the upper stage from shifting backward is provided on the upper portion, the shifting of the block on the upper stage from rearward can be reliably prevented.

As the construction method, the length and angle of the front and rear wraps of the front wall and the rear wall of the left and right adjacent retaining blocks can be freely determined at the site. Therefore, a retaining wall can be constructed without any gap between adjacent blocks on the slope of any curve. Therefore, the work for closing the gap is not required, so that the workability is improved, and any slope can be dealt with with the block of the same shape, so that the production cost can be reduced and the retaining wall can be constructed at low cost.

Further, since the block is constituted by the front wall, the rear wall, and the center beam, a large hollow portion is formed when the blocks are connected. Therefore, if the hollow portion is filled with a filler such as concrete, a heavy retaining wall can be easily constructed.

Further, the same retaining wall block is used as the retaining wall, so that there is no gap between the retaining wall blocks regardless of whether the retaining wall has a flat linear shape or a planar curved retaining wall, and the surface has shading. Can be constructed arbitrarily.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a retaining wall block of the present invention.

FIG. 2 is a front view showing an embodiment of a retaining wall block according to the present invention.

FIG. 3 is a side view showing an embodiment of the retaining wall block of the present invention.

FIG. 4 is a longitudinal sectional front view showing an embodiment of the retaining wall block of the present invention.

FIG. 5 is a top perspective view showing the embodiment of the retaining wall block of the present invention.

FIG. 6 is a perspective view from below showing an embodiment of the retaining wall block of the present invention.

FIG. 7 is a plan view showing a state in which the retaining wall block according to the present invention is linearly continued left and right.

FIG. 8 is a plan view showing a state in which the retaining wall block according to the present invention is continuously curved in the left and right directions.

FIG. 9 is a plan view showing a state in which the retaining wall block according to the present invention is linearly continued right and left and up and down.

FIG. 10 is a side view of a state in which the retaining wall blocks of the present invention are vertically stacked.

FIG. 11 is a plan view showing a state in which a conventional retaining wall block is continued in a curved shape.

FIG. 12 is a front view of a state in which a conventional retaining wall block is continuously formed in a curved shape.

FIG. 13 is a side view of a state in which conventional retaining wall blocks are vertically stacked.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... embankment 2 ... foundation concrete 3 ... backing material 4 ... top-end concrete 5 ... retaining wall block 6 ... front wall 6a ... thin part 6b ... taper surface 6c ... step part 6d ... flat surface 6e ... taper surface 7 ... rear wall 7a: Thin portion 7b: Tapered surface 7c: Step 7d: Flat surface 7e: Tapered surface 8: Middle beam 9: Notch 10: Projection 11: Hollow portion 14: Filler 15: Retaining wall block 16: Gap

Continued on the front page (72) Inventor Yoshifumi Tominaga 75-2-2 Nagano Nagano, Takeo-shi, Saga Prefecture Fuji Concrete Industry Co., Ltd. (72) Inventor Chiyo Mitsuru Hirose 13-20 Hamacho Beppu City Oita Prefecture Inside the company (72) Inventor Yoshinori Maeda 1113 Koura, Sasa-cho, Kitamatsuura-gun, Nagasaki Prefecture Inside the Kitamatsu Cement Industry Co., Ltd. (56) References JP-A-7-82757 (JP, A) U) Real Kaihei 7-8442 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E02D 29/02 303

Claims (7)

(57) [Claims] 1. A front wall, a rear wall, and a center beam connecting them are formed in a substantially I-shaped plane, and the front wall and the rear wall are shifted right and left around the center beam at right and left directions. A retaining wall block characterized by being formed as follows. 2. The retaining wall block according to claim 1, wherein each of the front wall and the rear wall is formed with a thin step so that the front ends thereof are shifted left and right in the forward and backward directions. 3. The retaining wall block according to claim 1, wherein the front wall and the rear wall are provided so as to be inclined so as to protrude rearward with respect to the center beam. 4. The retaining wall block according to claim 1, wherein a notch for communication for discharging a filler for integrating an adjacent block is formed below the center beam. 5. The retaining wall block according to claim 1, wherein a projection for preventing the block stacked on the upper stage from shifting backward is provided on an upper portion. 6. A front wall, a rear wall, and a center beam connecting the front wall and the center beam are formed in a substantially I-shaped plane, and the front wall and the rear wall are shifted right and left around the center beam at right and left directions. Using the retaining wall block formed in the above, the front ends of the front wall and the rear wall of the retaining wall block adjacent to the left and right are superimposed back and forth with an appropriate length and an appropriate angle to be continuous, and the front wall, the rear wall and the middle beam A method for constructing a retaining wall, characterized in that a hollow portion surrounded by is filled with a filler such as concrete and the left and right retaining wall blocks are integrated. 7. A front wall, a rear wall, and a center beam connecting them are formed in a substantially I-shaped plane, and the front wall and the rear wall are shifted left and right with respect to the center beam at front and rear directions. Using the retaining wall block formed in the above, the front end and the rear wall of the adjacent retaining wall block on the left and right are superimposed forward and backward at appropriate lengths and angles, and the retaining wall blocks are piled up. The left and right retaining wall blocks were integrated by filling the hollow part surrounded by the front wall, the rear wall, and the center beam with a filler such as concrete, and were constructed into a plane linear shape or any curved shape. Retaining wall.