JP2974968B2 - Concrete block for retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block for retaining walls for the purpose of retaining slopes and slopes, protecting slopes, stabilizing, protecting landscapes, etc. The present invention relates to a concrete block for retaining wall for the purpose of retaining a slope, protecting a slope, stabilizing, protecting a landscape, and the like.

[0002]

2. Description of the Related Art As a method of constructing a concrete retaining wall for the purpose of retaining a slope or a slope, protecting the slope, and stabilizing,
Cast-in-place concrete has been used in the past, but it has been replaced with cast-in-place concrete for the purpose of improving workability, shortening the construction period, and ensuring the strength of retaining walls after construction. Therefore, a method using a precast concrete block tends to be frequently used. The concrete block method using this precast concrete block includes a block stacking method, a block stretching method, a sill block method, a grid frame block method, and the like. In addition to earth retaining, slope protection and stabilization, construction of a retaining wall that also supports landscape protection from consideration for the surrounding environment is required, and a precast concrete block with a decorative surface was used to meet such requirements. Block loading method is being implemented.

As such precast concrete blocks, there are a box shape having a cavity, a shape having a plane shape such as a well shape or an H shape, and the like. 7-33167
There is a concrete block disclosed in Japanese Patent No. This concrete block has a width of about 1.5m,
Since it is large and H-shaped with a height of about 1m, it can stand upright and be self-supporting, and can be laid up and down, so that the pile strength can be increased without using vertical reinforcing bars. can do.

[0004]

However, the above-mentioned conventional concrete block for retaining wall has the following problems. (1) It is not possible to cope structurally and with strength in both stacked stacking in which the surface positions of the stacked concrete blocks are aligned in the vertical direction and stacking in which the surface positions are shifted. (2) The height of the retaining wall that can be constructed is limited by the height of one concrete block and the number of stages to be piled up, and the pile height of the concrete block cannot be adjusted according to the desired height of the retaining wall. (3) In the case of a box-shaped or well-shaped concrete block having a cavity, a through-hole is formed at a portion connecting the surface portion and the back portion of the concrete block, and wires are provided at both ends of an iron bar or the like passing through the through-hole. Is not safe for lifting and hanging concrete blocks and positioning when retaining walls are constructed, and sufficient space is secured for removing the iron bar when constructing the edges of retaining walls. It is not possible to do so, which requires various operations and manpower, and significantly lacks workability.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and can perform both stacking and shifting stacking safely and easily. In addition, the stacking height of concrete blocks can be adjusted according to a desired height of a retaining wall. It is an object of the present invention to provide a concrete block for a retaining wall that can adjust its height and that can easily and easily construct the end of the retaining wall.

[0006]

In order to solve the above-mentioned problems, a concrete block for retaining wall of the present invention comprises a substantially plate-like surface portion and a vertical portion from a central portion of a rear surface of the surface portion to the rear surface. A substantially plate-shaped connecting portion integrally formed with the surface portion in the direction, and a substantially plate-shaped rear portion having the front surface formed integrally with a center portion or an end portion of the connecting portion and the front surface, A concrete block for a retaining wall having at least one or more spaces surrounded by substantially half of a surface part, substantially half or all of the connection part and the back part,
a. At least one or more are disposed on the rear surface of the rear portion.
A mold release bracket; b. The front surface is disposed on the front surface of the surface portion.
Decorative surface or veneer with vertical grooves that can define the length of the surface
And c. An inclined surface in which the height of the connecting portion is gradually shortened from the boundary between the connecting portion and the front surface portion to a predetermined position in the back surface direction, and the connection portion and the back surface portion from the lower end of the inclined surface . The height of the connecting portion and the back surface up to the boundary is constant.

[0007] With this configuration, it is possible to safely and easily perform both stacking and shifting stacking, and it is possible to adjust the stacking height of the concrete block according to the desired height of the retaining wall. The construction of the end can be performed easily and easily, and the release of the concrete block for the retaining wall from the formwork using the die-cutting metal becomes easy, and the time required for the release operation can be reduced. ,
A concrete block for retaining wall that not only can protect the landscape of the surrounding environment where the retaining wall is constructed, but also can improve the efficiency of the positioning work by using the vertical groove as the positioning reference when stacking. Can be provided.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is characterized in that a substantially plate-shaped surface portion and a central portion of the rear surface of the surface portion are integrated with the surface portion in a direction perpendicular to the rear surface. A substantially plate-shaped connecting portion formed, and a substantially plate-shaped rear portion having the front surface in which a center portion or an end portion of the connecting portion and the front surface are integrally formed, and substantially half of the surface portion is connected to the connecting portion. Part and at least one surrounded by substantially half or all of the back part
A concrete block for a retaining wall having one or more spaces, comprising: a. At least one or more are arranged on the rear surface of the rear portion.
A provided die-cutting bracket; b. Disposed in front of the surface portion
A decorative surface or a flute having a longitudinal groove capable of defining the length of the surface portion.
Comprises a decorative board; c. An inclined surface in which the height of the connecting portion is gradually reduced from a boundary between the connecting portion and the surface portion to a predetermined position in the direction of the back surface, and a lower end surface of the inclined surface;
And the height of the connecting portion and the back portion from the boundary between the connecting portion and the back portion is formed to be constant, and this configuration has the following operation.
You. a. It is possible to safely and easily perform both stacking and shifting stacking, and it is possible to adjust the stacking height of concrete blocks according to the desired height of the retaining wall. It can be done easily. b. From the mold by using the die-cutting bracket
The concrete block for retaining walls of the building will be easier to release
In addition, the time required for the release operation can be reduced.
c. Since it has a decorative surface or decorative plate with vertical grooves,
It is said that it can respond to landscape protection of the surrounding environment where the retaining wall is built
In both cases, the vertical groove is used as a positioning reference when stacking
Can improve the efficiency of positioning work.
Will be possible. Here, the U-shaped iron
Streaks are used, but are not particularly limited to this.
No. Marble patterns etc. can be used for the decorative surface or decorative board.
There is, but is not limited to this.

According to a second aspect of the present invention, in the first aspect of the present invention, the length of the back portion is formed to be shorter than the length of the front portion by 5 to 75%, preferably 10 to 70%. This has the effect that a retaining wall can be constructed along an inclined surface or slope that is curved in a U-shape or the like.

According to a third aspect of the present invention, in the first or second aspect, a convex portion is formed on one side surface of the surface portion, and a convex portion is formed on the other side surface of the surface portion. And a concave portion that fits with the recessed portion is formed, thereby having an effect that alignment of the left and right surfaces of the surface portion of the retaining wall concrete block is facilitated. As the convex portion, a projection or a ridge having a triangular, rectangular, or semicircular cross section is used. In addition, the concave portion has a shape having a triangular, rectangular, or semicircular cross section that fits with the projection or the ridge, but is not particularly limited thereto.

According to a fourth aspect of the present invention, there is provided the invention according to any one of the first to third aspects, wherein two or more hanging anchors are provided on the upper surface or the upper surface and the lower surface of the surface portion. And one or more anchors for suspension on the upper surface or the upper and lower surfaces of the rear portion.
In addition to the fact that it is possible to hang three points at the same time, it is possible to easily and safely perform the work for lifting and hanging the concrete block for retaining wall and the positioning at the time of installation.

[0012] The invention described in claim 5 is the invention according to any one of claims 1 to 4, the surface
To the connecting part of the part and the connecting part and the connecting part of the back part and the connecting part
With an R-shaped tension,
This has the effect of improving the strength of the connecting portion .

[0013] Hereinafter, a specific example of the embodiment of the present invention. (Embodiment 1) FIG. 1 is a perspective view of a concrete block for retaining wall in the first embodiment, FIG. 2 is a plan view of a concrete block for retaining wall in the first embodiment, and FIG. 1
It is a side view of the concrete block for retaining walls in embodiment.

[0014] 1 to 3, 1 is surface portion, 2 connecting portion, 3 is the rear part, 4 space, inclined surfaces 5, 6a is convex portion, 6b is a concave portion, 7 anchor portions , 8 denotes a die-cutting bracket, 9 denotes a decorative surface, 10 denotes a tension, and 16a and 16b denote vertical grooves.

Next, a detailed structure of retaining wall concrete blocks in this embodiment will be described with reference to FIGS.

In the concrete block for retaining wall according to the present embodiment, the surface portion 1, the connecting portion 2, and the back portion 3 are integrally formed, and the length L2 of the back portion 3 is larger than the length L1 of the surface portion 1.
Has a short H-shaped planar shape, and has a structure that can stand up very stably and can be stacked. In addition, the strength of the connecting portion is increased by providing the R-shaped upholstery 10 at the connecting portion between the surface portion 1 and the connecting portion 2 and at the connecting portion between the back surface portion 3 and the connecting portion 2.

The dimensions of the retaining wall concrete blocks in the present embodiment, the length L1 of the surface portion 1 as an example.
5 to 2.5 m, length L2 of the back part is 1.3 to 2.3 m,
Copy W is 1-2 m, height H is 0.8-1.5 m,
The R of the tension 10 in this case is 15 to 40 cm, preferably 20 to 35 cm. As the R of the upholstery 10 becomes smaller than 20 cm, there is a tendency that the strength cannot be improved. As the R becomes larger than 35 cm, the amount of the concrete used as the raw material is more than necessary for the required strength of the joint. Both tend to be undesirable.

Further , it has two space portions 4 surrounded by approximately half of the surface portion 1, approximately half of the connecting portion 2 and approximately half of the back portion 3, and in this space portion 4, crushed stone or crushed single-grain crushed stone is provided. By stuffing, it is possible to secure and stabilize the strength of the retaining wall without using cast-in-place concrete or mortar other than the foundation. Furthermore, since the length of the back part 3 is shorter than the surface part 1, it is also possible to arrange the adjacent concrete blocks for retaining walls in a curved shape, and it is also possible to form a U-shaped curved slope or slope. Retaining walls can be constructed according to the shape. On the other hand, in the case of arranging in a straight line, by fitting the convex portion 6a and the concave portion 6b, it is possible to easily perform surface alignment of the surface portion, and to connect adjacent concrete blocks for retaining walls. Strength can be increased.

Further, since the concrete block for retaining wall in the present embodiment has a relatively large size as described above, it is possible to shorten the period of the construction work of the retaining wall and to reduce the number of the three anchors. The provision of the portion 7 allows three-point suspension, and allows easy and safe lifting and hanging operations using a crane or the like and positioning during installation. Here, the anchor portion 7 is preferably a deher anchor (manufactured by Onoda Cement). In the case of three-point hanging, a coupler (made by Onoda Cement) is a dedicated lifting jig for the deher anchor.
It is preferable to use them together.

Further , the die 8 is used as a fulcrum when the concrete block for retaining wall is removed from the formwork, so that the concrete block for retaining wall can be easily released from the formwork. Time can be reduced.

Furthermore, by providing a decorative surface 9 in front of the surface portion 1, it is possible to correspond to the protected landscape of the surrounding environment for building retaining walls, surface portion provided on the decorative surface 9 1
Can be used as a reference for positioning when stacking the vertical grooves 16a and 16b that define the length of the vertical grooves. For example,
By setting the vertical groove 16a at a position corresponding to a half of the length L1 of the surface portion 1, or by setting the vertical groove 16b at a position corresponding to a quarter of the length L1, an index for positioning when stacking is performed. And the positioning operation can be performed efficiently. Furthermore, the pattern of the four peripheral surfaces of the decorative surface 9 is
By making the pattern of a piece of rock cut in half, the retaining wall is stacked with the same rock, or it becomes a pattern arranged sideways, giving the aesthetic appearance that the retaining wall is neatly formed, and cluttered with the conventional unevenness It can match the surrounding scenery remarkably compared with the retaining wall.

Next, a method of adjusting the stacking height of the retaining wall using the retaining wall concrete blocks in this embodiment will be described with reference to FIG.

FIG . 4 is a sectional view of a main part of a retaining wall made of a concrete block for retaining wall according to the first embodiment.

In FIG . 4, reference numerals 11a to 11d denote concrete blocks for retaining walls, and 12 denotes crushed stone.
As shown in FIG. 4, the concrete block 11 for the retaining wall is used.
In the case where a and the retaining wall concrete block 11b are stacked with their surface portions aligned, the height is twice the height of one retaining wall concrete block.

On the other hand, retaining wall concrete blocks of the present embodiment has an inclined surface 5, a predetermined position of the rear portion 3 direction height of the connecting portion 2 from the boundary of the surface portion 1 and the connecting part 2 It is formed so as to be shorter. The concrete block for retaining wall 11c and the concrete block for retaining wall 11d shown in FIG. 4 are stacked so that the front surface of the surface portion 1 is located in the middle of the inclined surface 5.
, The gap h1 between the upper surface of the back surface portion 3 of the retaining wall concrete block 11b and the lower surface of the retaining wall concrete block 11c, the upper surface of the rear surface portion 3 of the retaining wall concrete block 11c, and the retaining wall. H2 with the lower surface of the concrete block 11d
Can be changed. By adjusting the value of the gap due to the offset stacking in each stage, the stacked height of the entire concrete block for retaining wall can be adjusted to a desired retaining wall height.

As described above, according to the present embodiment, both the stacking and the shifting stacking are possible in the construction of the retaining wall, and the concrete blocks for the retaining wall are stacked according to the desired height of the retaining wall. Height can be adjusted. In addition, when constructing the retaining wall, it can be safely and easily moved and installed to a predetermined position by suspending it at three points, and it can be used on any inclined surface or slope such as a straight line or a U-shape. Retaining walls can be built. Further, the concrete block for retaining wall according to the present embodiment can be easily released from the mold frame by using the die, and the time required for the release operation can be reduced. Furthermore, by providing a decorative surface with flutes on the front of the surface, it is possible to protect the surrounding environment where the retaining wall is constructed, and to efficiently perform positioning work when stacking. it can.

[0027] As the retaining wall concrete blocks of the present embodiment, the length L1 of the surface portion other than the dimensions of the aforementioned 0.8～1.3M, the length L2 of the rear portion is 0.6
１．２1.2 m, copy W 1Ｗ2 m, height H 0.8０．８1.
It is also possible to make the length of the front and back portions approximately half that of the above, such as 5 m, and the R of the tension in this case is 10 to 18 cm for the same reason as described above. desirable. However, the dimensions are not particularly limited to those described in the present embodiment, and the tension R is also changed from the viewpoint of strength according to the dimensions of the retaining block concrete block. In addition, for the retaining wall concrete block of the present embodiment, the surface portion, the connection portion, and the back portion may be chamfered, and the back surface of the surface portion and the front surface of the back portion may be tapered. Good.

[0028] FIG. 5 (Embodiment 2) is a perspective view of a retaining wall concrete blocks in the second embodiment, FIG. 6 is a plan view of a retaining wall concrete blocks in the second embodiment, FIG. 7 is the second
It is a side view of the concrete block for retaining walls in embodiment.

[0029] In FIGS. 5-7, the surface portion 1, the connecting portion 2, the space section 4, the inclined surface 5, a concave portion 6b, the anchor portion 7,
Since the die 8, the decorative surface 9, and the upholstery 10 are the same as those in the first embodiment, the same reference numerals are given and the description is omitted. Reference numeral 13 denotes a back surface.

The concrete block for retaining wall of the present embodiment is different from that of the first embodiment in that the rear portion 13 is formed integrally with the connecting portion 2 at its end, and
It has two space portions 4, two inclined surfaces 5 formed on the upper and lower surfaces of the connecting portion 2, and six anchor portions 7 disposed on the upper and lower surfaces of the front surface portion 1 and the back surface portion 13. . Next, a method of stacking the concrete block for retaining wall according to the second embodiment having such a configuration will be described.

FIG . 8 is a plan view of a main part of a retaining wall made of a concrete block for retaining wall according to the first and second embodiments. In FIG. 8, 14 is a concrete block for retaining wall in the first embodiment, and 15 is a concrete block for retaining wall in the second embodiment.
Concrete block 1 for retaining wall in the first embodiment
By arranging the concrete block 15 for the retaining wall according to the second embodiment as shown in FIG. 8 at the end of each step of the retaining wall in which the connecting walls 4 are connected, crushed stones and soil surfaces are also provided at the end of the retaining wall. It is possible to construct a retaining wall in consideration of landscape protection without exposing the building. In addition, the retaining wall concrete block 15 in the second embodiment can be arranged at any of the left and right ends of the retaining wall by inverting the retaining wall. It can be constructed in a letter shape. At this time, the concrete block 15 for the retaining wall in the present embodiment includes the front surface portion 1 and the back surface portion 1.
Like the upper surface of 3, the lower surface is also provided with three anchor portions 7, so that three points can be hung even in the inverted state. Further, since the retaining wall concrete block 15 in the present embodiment has the inclined surfaces 5 on both the upper surface and the lower surface of the connecting portion 2, the stacked block is staggered at any of the left and right ends of the retaining wall. By doing so, it is possible to adjust the stacking height of the concrete block for retaining wall.

As described above, according to this embodiment, the end of the retaining wall can be easily and easily constructed, and the retaining wall can be constructed at the end of the retaining wall without impairing the scenery.
Both stacking and offset stacking are possible, and the stacking height of the retaining wall concrete block can be adjusted according to the desired height of the retaining wall.

[0033]

As described above, according to the present invention, both the stacking and shifting stacking of concrete blocks for retaining walls are possible, and the stacking height of concrete blocks for retaining walls can be adjusted. This has an excellent effect that the flexibility in designing the retaining wall is improved, and it is possible to construct the retaining wall in a place where the height of the retaining wall is restricted by the surrounding environment. In addition, the ability to adjust the stacking height of the retaining wall concrete blocks helps protect the surrounding environment where the retaining wall is constructed, and eliminates the need to cut the retaining wall concrete blocks to adjust the retaining wall height. Therefore, there is an excellent effect that the construction period can be significantly reduced with a small number of work steps. In addition, a retaining wall can be constructed on an inclined surface or a slope having any shape such as a linear shape, a U shape, an L shape, and a U shape, and a decorative surface is provided on the front surface. By having this, there is an excellent effect that it is rich in harmony with the surrounding environment in which the retaining wall is constructed, and it is possible to remarkably enhance the beauty of roads and residential land development sites. In addition, at the time of construction of the retaining wall, it is possible to suspend at three points using the anchor part, and it is possible to easily and safely perform the lifting work and the hanging work of the retaining wall concrete block and the positioning at the time of installation. Therefore, it has an excellent effect that safety and workability at the time of construction are improved. In addition, since the retaining block concrete block can be easily released from the mold frame by the die-cutting fitting, the concrete can be prevented from being damaged at the time of release, and the time required for the release operation can be reduced. This has an excellent effect that the productivity of the concrete block for retaining wall can be improved. Furthermore, along with the above effects, the flexibility of the retaining wall design and sufficient strength after construction are possible, and protection and stabilization of slopes and slopes can be achieved,
It has an excellent effect of being able to construct a retaining wall that supports environmental protection and aesthetic enhancement.

[Brief description of the drawings]

FIG. 1 is a perspective view of a concrete block for retaining wall according to a first embodiment.

FIG. 2 is a plan view of the concrete block for retaining wall in the first embodiment.

FIG. 3 is a side view of the concrete block for retaining wall according to the first embodiment.

FIG. 4 is a sectional view of a main part of a retaining wall made of a concrete block for retaining wall according to the first embodiment.

FIG. 5 is a perspective view of a retaining wall concrete block according to a second embodiment.

FIG. 6 is a plan view of a concrete block for retaining wall according to a second embodiment.

FIG. 7 is a side view of a retaining wall concrete block according to a second embodiment.

FIG. 8 is a plan view of a main part of a retaining wall made of a concrete block for retaining wall in the first embodiment and the second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Surface part 2 Connection part 3, 13 Back part 4 Space part 5 Inclined surface 6a Convex part 6b Concave part 7 Anchor part 8 Die-cutting metal fitting 9 Decorative surface 10 Tension 11a-11d Concrete block for retaining wall 12 Crushed stone 14 1st implementation Concrete block for retaining wall in form of 15 Concrete block for retaining wall 16a, 16b in the second embodiment Vertical groove

Claims (5)

(57) [Claims] A substantially plate-like surface portion; a substantially plate-like connection portion formed integrally with the surface portion in a direction perpendicular to the rear surface from a central portion of the rear surface of the surface portion; And a substantially plate-shaped rear portion having the front surface in which a central portion or an end portion of the front surface is integrally formed, and is surrounded by substantially half of the front surface portion, the connection portion, and substantially half or all of the rear portion. A concrete block for a retaining wall having at least one or more spaces, a. At least one on the back of the back
At least one die-cutting bracket, b. The front of the surface
Has a longitudinal groove which can be provided to define the length of the surface portion
A decorative surface or a decorative plate; c. An inclined surface in which the height of the connecting portion is gradually reduced from a boundary between the connecting portion and the front surface portion to a predetermined position in the direction of the back surface;
The height of the connection part and the back part from the lower end part of the above to the boundary between the connection part and the back part is formed to be constant. 2. The retaining wall concrete according to claim 1, wherein the length of the rear portion is shorter than the length of the front portion by 5 to 75%, preferably 10 to 70%. block. 3. A convex portion is formed on one side surface of said surface portion, and a concave portion is formed on the other side surface of said surface portion to be fitted with said convex portion. 3. The concrete block for retaining wall according to 1 or 2. 4. An apparatus according to claim 1, further comprising: two or more hanging anchors on the upper surface, upper surface and lower surface of said surface portion, and one or more hanging anchor portions on the upper surface, upper surface and lower surface of said back surface portion. The concrete block for a retaining wall according to any one of claims 1 to 3, wherein: 5. A connecting portion between the surface portion and the connecting portion and a front portion.
The concrete block for a retaining wall according to any one of claims 1 to 4, wherein an R-shaped tension is provided at a connecting portion between the back surface portion and the connecting portion .