JP2000282494A - Block for retaining wall and retaining wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a block for a retaining wall that enables water contained in retained earth and sand to be drained without splashing over passersby, etc., and that has two or more applications. SOLUTION: This retaining wall structure comprises flow-passage blocks 13 each in the form of an upwardly open box having an inlet port 36 in its rear wall 31 and a draining port 61 in its bottom wall 33, and draining blocks 12 each taking the form of an upwardly open box which can be installed beneath the flow-passage block 13, and having a draining port 29 in its front wall 23. The draining port 29 in the front wall 23 is shaped to allow fish to pass through.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall block and a retaining wall structure for forming a retaining wall for retaining a steep place such as a mountain or a shore, that is, a cliff or the like.

[0002]

2. Description of the Related Art Conventionally, for example, a retaining wall for earth retaining has been formed on a mountain cliff. The retaining wall is provided with a drain pipe penetrating the retaining wall so that water absorbed in earth and sand retained in the earth can be extracted. Accordingly, a large number of drainage pipes are provided evenly over substantially the entire area of the retaining wall. In addition, revetment blocks with fish nests are employed on retaining walls formed on shores such as rivers in order to provide a place for laying fish and houses.

[0003]

However, in the conventional drain pipe, water absorbed in earth and sand retained in the earth is discharged to the outer surface of the retaining wall through the drain pipe. However, the water may hang on passers-by or vehicles passing by the retaining wall, and the water containing the sediment may scatter on the road surface provided along the retaining wall. And there exists a problem that the outer wall surface of a retaining wall becomes dirty with this water. Retaining wall blocks used for retaining walls include, for example, those used for mountain cliffs and those used as seawalls with fish nests. It is necessary to manufacture a plurality of types of blocks as separate components, and the work is troublesome. Then, since the user cannot use both blocks in common, it is necessary to stock each block. Therefore, there is a problem that an inventory space is required for each type of block and an inventory cost is required for each type of block.

A conventional retaining wall formed on a mountain, a shore, or the like, as shown in FIG. 15, has a plurality of blocks each having a substantially rectangular parallelepiped shape on an inclined surface 1a of a foundation 1 buried underground. 2
Are sequentially stacked. Here, the inclination angle of the outer wall surface 3 of the retaining wall with respect to the horizontal plane is about 6
3 ° (normal gradient 10: 5 = 5 minutes), and the inclined surface 1a of the base 1 so that the inclination angle of the outer wall surface 3 is about 63 °.
Is determined ((90 ° −63 °) = 27 °). However, the inclination angle of the inclined surface 1a of the base 1 is set to 27 °.
It is difficult to form the base part 1 so as to accurately form the base part 1 so that the inclination angle of the outer wall surface 3 of the retaining wall is 63 °. The angle may be adjusted with a small stone or the like in the gap 7 between the inclined surface 1a and the bottom surface of the lowermost block 2.

The present invention relates to a retaining wall block capable of draining water contained in earth and sand retained by earth retaining so as not to pass to a pedestrian or the like, a retaining wall block having two or more uses,
It is another object of the present invention to provide a retaining wall structure capable of easily constructing an outer wall surface at a desired inclination angle.

[0006]

SUMMARY OF THE INVENTION A retaining wall block according to a first aspect of the present invention is a box-like block that opens upward, has an inflow port on a rear wall, and has a drain port on a bottom wall. When,
And a drain block that can be installed below the flow path block and opens upward, and has a drain port on the front wall. A retaining wall block according to a second invention is characterized in that, in the first invention, the drain port of the front wall has a shape allowing fish to enter and exit. A retaining wall block according to a third invention is characterized in that, in the second invention, openings are provided in left and right side walls of the flow path block.

[0007] The retaining wall block according to a fourth aspect of the present invention is the third aspect of the invention.
In the invention of the above, the inflow port of the rear wall, the drain port of the bottom wall, and the opening of the side wall provided in the block for the flow path are closed with a thin lid capable of being crushed. It is a feature. The retaining wall block according to a fifth aspect of the present invention is characterized in that it has a box shape that opens upward, has a front wall that allows fish to enter and exit, and has an opening with a shape that allows drainage. It is. A retaining wall block according to a sixth aspect of the present invention is a retaining wall block arranged in the up-down direction and the left-right direction, which has a tubular shape opened in the up-down direction, and faces the left and right adjacent blocks in the installed state. An opening is provided in each side wall.

The retaining wall structure according to a seventh aspect of the present invention is a retaining wall structure in which the outer wall surface of the retaining wall forms a predetermined angle of inclination with respect to a horizontal plane, the foundation having a horizontal upper surface and provided with a locking portion. And a base block installed on the upper surface of the base portion while being locked by the locking portion, and a retaining wall block sequentially stacked on the base block. It is. The retaining wall structure according to an eighth invention is characterized in that, in the seventh invention, the foundation block is selected from two or more types of foundation blocks having different inclination angles of the outer wall surface with respect to the horizontal plane. It is assumed that. The block for retaining wall according to the ninth invention,
In any one of the first to sixth inventions, each of the blocks has a depth dimension longer than a height dimension.

According to the retaining wall block of the first invention, the water contained in the earth and sand retained in the earth is supplied from the inlet provided on the rear wall of each flow path block to the respective flow path block. Water flowing into the inside of the block and flowing into each flow path block is sequentially drained into a flow path block below from a drain port provided on the bottom wall, and flows into the inside of the drain block. The water that has flowed into the drain block is drained from a drain port provided on a front wall of the drain block. Therefore, for example, when forming a retaining wall along the slope of the mountain, a plurality of vertically stacked flow passage blocks and drainage blocks are installed at predetermined intervals, and the flow passage blocks and the drainage blocks are disposed. Blocks having no drainage pipes between the rows of storage blocks.

According to the retaining wall blocks of the second and fifth inventions, they can be used as drainage blocks of the first invention and also as revetment blocks with fish nests. When used as a revetment block with a fish nest, the opening is used as an entrance for fish, and the inner cavity of the box-shaped block is used as a fish nest.

According to the retaining wall block of the third invention, when the drainage block is used as a seawall with fish nests, the strength of the channel block is reduced by driving concrete into the channel block. When used in this manner, the concrete in adjacent flow passage blocks can be connected to each other through openings provided in the side walls.

According to the retaining wall block of the fourth invention, when the flow path block is used for drainage flow path, the lids of the inlet of the rear wall and the drain of the bottom wall are crushed. Can be used in an open state. When the channel block is used by driving concrete into the channel block, the inlet of the rear wall and the drain of the bottom wall are kept closed by the lid, and the side wall is closed. The lid of the opening can be used in a state of being crushed and opened.

According to the retaining wall block of the sixth invention, the retaining wall can be formed by arranging the retaining wall vertically and horizontally. By driving concrete into each of these retaining wall blocks, the blocks installed in the vertical and horizontal directions can be connected to each other by concrete.

[0014] According to the retaining wall structure of the seventh invention, the foundation is installed or constructed so that the upper surface is horizontal, the foundation block is installed on the upper surface of the foundation, and the foundation block is further placed on the foundation block. The retaining wall can be formed by sequentially stacking the retaining wall blocks. The base block installed on the upper surface of the base portion is locked by the locking portion, so that the base block and the retaining wall block can be prevented from shifting due to earth pressure.

According to the retaining wall structure of the eighth invention, by selecting and using a corresponding basic block according to the inclination angle of the outer wall surface of the retaining wall, the retaining wall having the inclination angle corresponding to the basic block can be formed. Can be formed. The retaining wall blocks stacked on the base block can be shared regardless of the difference in the inclination angle of the outer wall surface of the retaining wall. According to the retaining wall block of the ninth invention, the stability of the retaining wall can be enhanced by making the depth dimension longer than the height dimension of each block stacked on the base portion.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a retaining wall structure using a retaining wall block according to the present invention will be described with reference to FIGS. This retaining wall is for retaining the slope of the cliff, and is formed by stacking a large number of concrete blocks in the vertical and horizontal directions as shown in FIGS. FIG. 3 is a front view of the retaining wall. As shown in FIG. 3, among the four rows of block groups stacked in the vertical direction, the first and fourth rows of block groups from the left retain the earth and sand, and the earth and sand 8 that have been earthed. Is a drainage channel block 4 capable of draining water contained in the drainage channel into a side groove 9 provided along the retaining wall. The block groups in the second and third columns from the left are earth retaining blocks 5 dedicated to earth and sand retaining. In other words, this retaining wall
The drainage block 4 is installed one row at a time every two rows of the retaining blocks 5 are installed. The outer wall surface 10 of the retaining wall is formed as an inclined surface having a normal gradient of 10: 5 (hereinafter referred to as 5 minutes).

As shown in FIG. 1, the drainage block 4 includes a foundation block 11 installed on a foundation 6 buried underground along the retaining wall, and a foundation block 11.
Block 12, a plurality of passage blocks 13 on the drain block 12, and a cover block on the top passage block 13. It consists of fourteen. A side groove 9 is formed by a side groove block along the retaining wall, and a road 15 is provided along the side groove 9.
As shown in FIG. 1, the base 6 has an upper surface 6a formed substantially horizontally, and a ridge 16 protruding upward is provided at an edge of the upper surface 6a on the side groove 9 side. The ridge 16 is a locking portion 16.

The basic block 11, as shown in FIG.
It is installed on the upper surface 6 a of the base 6. Basic block 1
As shown in FIG. 6, 1 is a front wall 17, which is a substantially rectangular plate-like body that is long horizontally, a rear wall 18 that is shorter than the front wall 17, and a front wall that is parallel to each other. 17 and rear wall 18
And right and left side walls 19, 19 connecting the two. The lower edges of the front wall 17 and the rear wall 18 project below the lower edges of the left and right side walls 19, 19,
As shown in FIG. 1, the front wall 17 of the base block 11
In addition, the outer wall surface 20 of the front wall 17 becomes a slope having a normal gradient of 5 minutes in a state where each lower edge of the rear wall 18 is placed in contact with the upper surface of the base portion 6. The front wall 17 of the base block 11 is locked by the locking portion 16 so that the retaining wall including the base block 11 does not shift to the side groove 9 due to the earth pressure of the earth and sand 8. Can be. An opening 21 is provided in each of the left and right side walls 19. When the concrete 22 is driven into the inside of each of the foundation blocks 11 installed in one row on the upper surface of the foundation 6, the opening 21 is formed on the side of the adjacent foundation block 11 through the opening 21. This is to make it easy to enter the space formed between the component walls 19. In this way, the concrete 22 in each of the adjacent foundation blocks 11 has the opening 2 provided in the respective side wall 19.
By being connected to each other through the inside 1, the plurality of base blocks 11 arranged in a row on the upper surface of the base unit 6 become integral and strong, and are connected to the base unit 6 in this state. And can be firmly fixed.

The drain block 12 is installed on the base block 11, as shown in FIG. As shown in FIG. 5, the drain block 12 is a front wall 23 that is a substantially rectangular plate-like body that is long horizontally, a rear wall 24 that is shorter than the front wall 23, and is parallel to each other. Left and right side walls 25, 25 connecting the front wall 23 and the rear wall 24, and a rectangular flat plate connected to the lower edges of the front wall 23, the rear wall 24, and the left and right side walls 25. And an engaging portion 27 which is provided to protrude downward in a range from the inside of the lower edge of the front wall 23 to the lower edge of each side wall 25. As shown in FIG. 1, this drain block 12
Each lower edge of the front wall 23 and the rear wall 24 is
The outer wall surface 28 of the front wall 23 becomes a slope having a regular gradient of 5 minutes in a state where the outer wall surface 28 of the front wall 23 is in contact with the upper edges of the corresponding front wall 17 and rear wall 18. And the drainage block 12
Is engaged with the inner edge of the front wall 17 of the base block 11, whereby the drain block 12 is
Can be prevented from shifting to the side groove 9 due to earth pressure. Further, the front wall 23 is provided with two vertically elongated drain ports 29 of substantially octagon. As shown in FIG. 5C, the lower opening edge of each drain port 29 matches the height of the upper surface of the bottom wall 26. The upper surface of the bottom wall 26 is formed as an inclined surface that descends from the rear wall 24 to the front wall 23. The upper surface of the bottom wall 26 is formed as an inclined surface that descends from the rear wall 24 to the front wall 23, so that sediment does not accumulate on the bottom wall 26.

As shown in FIG. 1, a plurality of flow passage blocks 13 are provided on the drain block 12.
Each block 13 for a flow path is the same. As shown in FIG. 4, the flow path block 13 includes a front wall 30 that is a substantially rectangular plate-like body that is long horizontally, a rear wall 31 that is shorter than the front wall 30, Left and right side walls 32, 32 connecting the front wall 30 and the rear wall 31 to be connected, and a rectangular flat plate connected to the lower edges of the front wall 30, the rear wall 31, and the left and right side walls 32 A bottom wall 33 and an engaging portion 34 which is provided to protrude downward in a range extending from the inside of the lower edge of the front wall 30 to the lower edge of each side wall 32. As shown in FIG. 1, the lower block of the front wall 30 and the lower wall 31 of the flow path block 13
The outer wall surface 35 of the front wall 30 becomes a slope with a normal gradient of 5 minutes in a state where the outer wall surface 35 of the front wall 30 is placed in contact with the upper edges of the corresponding front wall 23 and rear wall 24. Then, the flow path block 13
Are engaged with the inner edge of the front wall 23 of the drainage block 12, and the upper flow path block 1
3 is the front wall 3 of the lower passage block 13.
0 is engaged with the inner edge. Thereby, each flow path block 13 can be prevented from shifting to the side groove 9 side due to the earth pressure of the earth and sand 8. Also, as shown in FIG.
Three inlets 36 are provided on the rear wall 31 of the flow path block 13, and six drain ports 61 are provided on the bottom wall 33. The upper surface of the bottom wall 33 is formed as an inclined surface that descends from the rear wall 31 to the front wall 30.

The rear wall 3 of the flow path block 13
The three inlets 36 and the six drains 61 of the bottom wall 33 are provided with a thin lid 37 closing the inlets 36 and the drains 61,. It is formed by crushing with a hammer or the like. Each of the left and right side walls 32 is provided with a concave portion (for forming an opening portion 39) 39 closed by a thin lid 38. In other words, the original shape of the flow path block 13 is such that the three inlets 36, the six drains 61, and the two openings 39 have a thin, crushable concrete lid 37.
, 38, 38 are closed. Then, the block 13 for the channel is replaced with the block 4 for the drainage.
In the case of using as, the lid 37 closing the three inlets 36 and the six drains 61 is crushed, and the opening 39 provided in each side wall 32 is closed by the lid. Used in. Openings 39 provided in each side wall 32
The reason why the lid 38 is used without being crushed is to prevent concrete and earth and sand from entering the flow path block 13 from each opening 39.

As shown in FIG. 1, the lid block 14 is installed on the uppermost flow path block 13, and closes the upper opening of the uppermost flow path block 13. The lid block 14 can prevent earth and sand from entering the uppermost flow path block 13.

As shown in FIG. 2, the retaining block 5 includes a foundation block 11 installed on a foundation 6 buried underground along the retaining wall, and a foundation block 11
And a cover block 14 provided on the uppermost general block 40. Foundation 6 and foundation block 1
1 is equivalent to that of the drainage block 4 shown in FIG.

The general block 40 includes, as shown in FIG.
A plurality of stages are installed on the basic block 11, and each of the general blocks 40 is the same. General block 40
As shown in FIG. 7, the front wall 41 is a substantially rectangular plate-like body that is long horizontally, the rear wall 42 is shorter than the front wall 41, and the front wall 41 is parallel to each other. And right and left side walls 43 and 43 connecting the rear wall 42 and the rear wall 42. As shown in FIG. 2, the general block 40 is configured such that the lower edges of the front wall 41 and the rear wall 42 abut against the corresponding upper edges of the front wall 17 and the rear wall 18 of the base block 11. In the installed state, the outer wall surface 44 of the front wall 41 becomes a slope having a normal gradient of 5 minutes. The front surfaces of the lower edges of the left and right side walls 43 of the general block 40 are engaged with the inner edges of the front wall 41 of the basic block 11, and the left and right sides of the upper general block 40. The front surface of the lower edge of the side wall 43 is engaged with the inner edge of the front wall 41 of the lower general block 40. As a result, each of the general blocks 40 is
Can be prevented from shifting to the side groove 9 due to the earth pressure.

Openings 45 are provided in the left and right side walls 43 of the general block 40. This opening 45
When concrete 46 is driven into the inside of each of the general blocks 40 arranged in one row on the upper surface of the basic block 11 or the general block 40, the concrete 46 passes through the opening 45 and the adjacent general block 40 This is to make it easier to enter the space formed between the side walls 43. In this way, the concretes 46 in the adjacent general blocks 40 are connected to each other through the openings 45 provided in the respective side walls 43, so that the concrete 46 is installed in one row in each step. The plurality of general blocks 40 are integrated and become solid. And since each general block 40 is a cylindrical shape opened in the up-down direction, when the concrete 46 is driven into the inside of each general block 40, the concrete 46 in the general blocks 40 installed in one vertical line Through the upper and lower openings, the general blocks 40 connected to each other and arranged in one row in a vertical direction are integrated into one piece, and become solid. In other words, the general blocks 40 arranged vertically and horizontally are in a state where the vertically adjacent blocks and the left and right adjacent blocks are connected to each other by the concrete 46.

According to the retaining wall configured as described above, the earth and sand 8 constituting the cliff can be retained. Then, the water absorbed in the earth and sand 8 or the like retained in the earth flows into each flow path block 13 from each inflow port 36 provided in the rear wall 31 of each flow path block 13. The water that has flowed into each flow path block 13 is discharged from the drain port 6 provided on the bottom wall 33 of each flow path block 13.
, Are sequentially drained into the flow path block 13 below and flow into the drain block 12. And
The water that has flowed into the drain block 12 is drained from each drain port 29 provided in the front wall 23 of the drain block 12 and flows into the gutter 9. In this way, the water absorbed in the earth and sand 8 and the like can be drained into the gutter 9 through the inside of each of the flow path blocks 13 and the drainage blocks 12, so that the water passes by the retaining wall. It does not hang on pedestrians or vehicles, and the water containing the earth and sand does not scatter on the road surface of the road 15 provided along the retaining wall. Then, the outer wall surface 10 of the retaining wall is formed by this water.
Is not contaminated, so that the appearance of the outer wall surface 10 of the retaining wall can be maintained for a long time.

Each of the base blocks 11, the drain block 12, and the flow path block 1 stacked on the base portion 6
3 and the general block, as shown in FIG.
(= Approximately 600 mm) and the width w (= approximately 1000 mm) are longer than the height h (= approximately 500 mm). Can be enhanced. The conventional block shown in FIG. 15 has a depth y of about 400 mm, a width w of about 1000 mm,
The height h is about 500 mm, and the height h (= about 500 m
m) is longer than the depth y (= about 400 mm).

Next, a second embodiment of a retaining wall structure using a retaining wall block will be described with reference to FIGS. This retaining wall is for revetment, and is formed by stacking a number of concrete blocks vertically and horizontally as shown in FIGS. 8 and 9. FIG. 9 is a front view of the retaining wall. As shown in the figure, of a plurality of rows of blocks stacked horizontally, the second and third blocks from the bottom can hold earth and sand 8 and fish nests serving as fish dwellings The revetment block 12 is attached.
That is, the first block from the bottom installed on the upper surface of the foundation 6 is the base block 11, the second and third blocks from the bottom are seawall blocks 12 with fish nests, and the fourth block from the bottom. Is a flow path block 13, and each of the fifth and higher blocks from the bottom is a general block 40. And
As shown in FIG. 8, the lid block 14 is provided on the uppermost general block 40, and the upper opening of the uppermost general block 40 is closed by the lid block 14. The area around the fourth block from the bottom of this retaining wall is the surface of the river 47. The outer wall surface 48 of the retaining wall is formed as an inclined surface having a normal gradient of 5 minutes.

Each seawall with fish nest 12 is the same as the drainage block 12 used in the first embodiment. That is, the drainage block 12 can be used as the drainage block 4 of the first embodiment, and can also be used as a seawall block 12 with fish nests as in the second embodiment. Each drainage port 29 shown in FIG. 5 provided in the front wall 23 of the seawall block 12 with fish nests,
The shape and size allow fish to enter and exit.

Each flow path block 13 is the same as the flow path block 13 used in the first embodiment. However, when the channel block 13 is used as the top lid of the seawall block 12 with fish nests as in the second embodiment, three inlets 36 of the rear wall 31 and six drains 61 of the bottom wall 33 are provided. It is used in a state of being closed by a thin lid 37, and further, an operator crushes and uses a lid 38 closing an opening 39 provided in each of the left and right side walls 32 with a hammer or the like. The foundation 6, the foundation block 11, and the general block 40 are equivalent to those in the first embodiment, and are used by driving concrete 49 inside. Each block 13 for flow passage also has concrete 4 inside.
Type 9 and use.

According to the retaining wall applied for revetment as described above, the drainage block 12 used as the revetment block 12 with fish nests is used as a house for spawning fish, and fish is bred. be able to. And FIG.
As shown in (a) and (c), revetment block 1 with fish nest
The outer wall 28 of the front wall 23 has a concave shape inside and the two drain outlets 29 are open at the concave outer wall 28. Intrusion into the mouth 29 can be prevented.

The one type of drain block 12
Can be used for the drainage block 4 of the first embodiment, and the seawall block 12 with fish nests of the second embodiment can be used.
Therefore, the manufacturer of the drainage block 12 requires less time and effort than the case where the blocks for each of the two applications are manufactured separately, and the number of stocks is reduced. Can be reduced.

When the channel block 13 is used by driving concrete 49 into the channel block 13, the inflow port 36 of the rear wall 31 and the drain port 61 of the bottom wall 33 are provided with the lid 37,. When used in the closed state, the concrete 49 driven into the block 13 for the flow path is filled with the inlet 36 and the bottom wall 33 of the rear wall 31.
The concrete 49 can be reliably driven into the flow path block 13. Then, by crushing and opening the lid 38 closing the opening 39 of each side wall 32, the adjacent flow path blocks 13 can be connected to each other by the concrete 49 via the opening 39. .

Next, a third embodiment of a retaining wall structure using a retaining wall block will be described with reference to FIGS. The difference between the retaining wall of the first embodiment and the retaining wall of the third embodiment is that, in the first embodiment, the normal gradient of the outer wall surface 10 of the retaining wall is formed on an inclined surface of 10: 5 (5 minutes). Against
In the third embodiment, the normal gradient of the outer wall surface 50 of the retaining wall is 10:
In the first embodiment, as shown in FIG. 1 and FIG. 2, a 5-minute basic block 11 is installed at the lowermost stage, and at the uppermost stage, as shown in FIGS. In contrast to the 5-minute flow path block 13 and the general block 40 being installed, in the third embodiment, as shown in FIGS. 10 and 11, a 3-minute basic block 51 is installed at the bottom. On the uppermost stage, a flow block 52 for three minutes and a general block 5 are provided.
3 has just been installed. Except for this, the second embodiment is the same as the first embodiment, and a detailed description of the same parts will be omitted. In other words, when a retaining wall having a gradient of 5 minutes on the outer wall surface 10 is to be constructed, as shown in FIGS. Then, a 5-minute flow path block 13 and a 5-minute general block 40 may be installed at the uppermost stage. In the case of constructing a retaining wall having a gradient of 3 minutes for the outer wall surface 50, the third embodiment As shown in FIGS. 10 and 11 of the embodiment, a three-minute base block 51 is installed on the upper surface of the base part 6, and a three-minute flow path block 5 is provided at the top.
What is necessary is just to install the general block 53 for 2 and 3 minutes. Blocks other than the base block and the block placed on the top row can be shared for the 5-minute and 3-minute retaining walls. The blocks stacked on the foundation block are retaining wall blocks.

The 5-minute or 3-minute basic blocks 11, 51 corresponding to the inclination angles (5 minutes or 3 minutes) of the outer wall surfaces 10, 15 of the retaining wall, and the flow installed at the top level Road blocks 13 and 52 and general blocks 40 and 5
By selecting and using 3, this basic block,
A retaining wall having an inclination angle corresponding to the flow path block and the general block can be formed. Therefore, it is not necessary to change the inclination angle of the inclined surface 1a of the base portion 1 so that the outer wall surface of the retaining wall has a desired inclination angle as in the related art, so that the construction of the retaining wall is relatively easily performed. be able to.

Basic blocks 11 and 51 for 3 minutes and 5 minutes
Is different from the basic block 11 for five minutes as shown in FIGS. 1, 2 and 6.
In a state where the lower edges of the front wall 17 and the rear wall 18 are placed in contact with the upper surface 6a of the foundation 6, the outer wall surface 20 of the front wall 17 is inclined at a normal gradient of 5 minutes, The plane passing through the upper edges of the front wall 17 and the rear wall 18 is horizontal. On the other hand, as shown in FIGS. 10, 11 and 12, the three-minute basic block 51 is
The outer wall surface 56 of the front wall 54 inclines at a normal gradient of 3 minutes in a state where the lower edges of the front wall 54 and the rear wall 55 The plane passing through the upper surfaces of the part wall 54 and the rear wall 55 is at an angle A with respect to the horizontal plane (as shown in FIG. 12 (c), the slope is ascending from the front wall toward the rear wall). It is about to be inclined. This inclination angle A is 3 as shown in FIG.
In a state where the drain block 12 for five minutes is installed on the basic block 51 for separation, the outer wall surface 28 of the drain block 12 is inclined at a regular gradient of three minutes. Similarly,
As shown in FIG. 11, with the general block 40 for five minutes installed on the basic block 51 for three minutes, the outer wall surface 44 of the general block 40 is inclined at a normal gradient of three minutes.
The other parts of the three-minute and five-minute basic blocks 11 and 51 are the same, and detailed description of the same parts will be omitted.

The difference between the three-minute and five-minute flow path blocks 13 and 52 installed at the top is that the five-minute flow path block 13 is, as shown in FIGS. The lower edges of the front wall 30 and the rear wall 31 of the flow path block 13 are connected to the front wall 30 of the lower flow path block 13 for five minutes.
And each upper edge of the rear wall 31 (the plane passing through each upper edge is horizontal)
The outer wall 35 of the front wall 30 in a state where the
Is inclined at a normal gradient of 5 minutes, and the planes passing through the upper edges of the front wall 30 and the rear wall 31 become horizontal. On the other hand, as shown in FIG. 10, the three-minute flow path block 52 is configured such that the lower edges of the front wall 57 and the rear wall 58 of the flow path block 52 are connected to the lower five-minute flow section. With the outer wall surface of the front wall 57 inclined at a regular gradient of 3 minutes in a state where the outer wall surface of the front wall 57 is installed in contact with the corresponding upper edges of the front wall 30 and the rear wall 31 of the flow path block 13, The upper surfaces of the part wall 57 and the rear wall 58 are horizontal. The other parts of the three-minute and five-minute flow path blocks 13 and 52 are the same, so detailed description of the same parts will be omitted.

The difference between the three-minute and five-minute general blocks 40 and 53 installed at the top is that the five-minute general block 40 is, as shown in FIG. 2 and FIG. In a state where the lower edges of the front wall 41 and the rear wall 42 are placed on the lower general block 40 for 5 minutes, the outer wall surface 44 of the front wall 41 is inclined at a normal gradient of 5 minutes and The plane passing through the upper edges of the front wall 41 and the rear wall 42 is horizontal. On the other hand, general block 5 for 3 minutes
3 is a front view in which the lower edges of the front wall 59 and the rear wall 62 of the general block 53 are set on the lower five-minute general block 40 as shown in FIGS. The outer wall surface 60 of the wall 59 is inclined at a normal gradient of 3 minutes, and the upper surfaces of the front wall 59 and the rear wall 62 are horizontal. General block 40 for 3 minutes and 5 minutes,
Since other parts of 53 are equivalent, detailed description of equivalent parts will be omitted.

Next, a fourth embodiment of a retaining wall structure using a retaining wall block will be described with reference to FIG. The difference between the retaining wall of the first embodiment and the retaining wall of the fourth embodiment is that, in the first embodiment, the lower half of the foundation block 11 on the foundation 6 is buried underground. In the fourth embodiment, substantially the entire base block 11 is exposed from the ground. FIG. 14 is a sectional view of the retaining block 5. The drainage block 4 in the fourth embodiment includes:
Although not shown in the drawing, the base block 11 shown in FIG. 1 is omitted, the drain block 12 is installed on the upper surface of the base part 6, and the flow path block 13 is sequentially stacked on the drain block 12. is there. Except for this, the second embodiment is the same as the first embodiment, and a detailed description of the same parts will be omitted.

[0040]

According to the retaining wall block of the first invention,
Water contained in earth and sand retained in the earth can be passed through the inside of each flow path block and drain block and drained from the drain port of the drain block. Neither the pedestrians nor the vehicles pass by, and the water containing the earth and sand does not splash on the road surface provided along the retaining wall. Since the outer wall surface of the retaining wall is not stained by the water, the aesthetic appearance of the outer wall surface of the retaining wall can be maintained for a long time.

According to the retaining wall blocks of the second and fifth inventions, this one type of retaining wall block can be used for both the drainage block and the seawall with fish nests of the first invention. The manufacturer of this retaining wall block
In comparison with the case where blocks corresponding to each of the two applications are manufactured separately, there is an effect that the operation is not troublesome. Since the user can use one type of retaining wall block for two types of applications, it is not necessary to stock each block, so that the inventory space can be reduced and the inventory can be reduced. Costs can be reduced.

According to the retaining wall block of the third invention, when the drainage block is used as a seawall with fish nests, concrete poured into the flow passage block is provided on each side wall. Through the openings that are in place, the concrete in the blocks lining up side by side is connected, which makes it possible to tightly connect the adjacent blocks.

According to the retaining wall block of the fourth invention, when the channel block is used by driving concrete into the channel block, the inlet of the rear wall and the drain of the bottom wall are covered with a lid. When used in a closed state, the concrete poured into the flow path block can be prevented from flowing out from the inflow port on the rear wall and the drain port on the bottom wall. Concrete can be driven into the concrete. Then, by crushing and opening the lid of the opening of the side wall, it is possible to connect the adjacent flow path blocks by concrete through the inside of the opening.

According to the retaining wall block of the sixth invention, the blocks which form the retaining wall and which are installed in the vertical and horizontal directions can be strongly connected to each other by concrete, so that the retaining wall having a very high strength can be obtained. Can be formed.

According to the retaining wall structure of the seventh invention, it is necessary to install or construct the base portion so that the upper surface is horizontal, but it is not possible to install or construct the base portion so that the upper surface is horizontal. It is relatively simpler than installing or constructing the base part such that the inclination angle of the inclined surface is, for example, 27 ° as in the conventional case, and therefore, the construction of the retaining wall is performed relatively easily than in the past. be able to.

According to the retaining wall structure of the eighth invention, by selecting and using a corresponding basic block according to the inclination angle of the outer wall surface of the retaining wall, the retaining wall having the inclination angle corresponding to this basic block is formed. Can be formed. Therefore, it is not necessary to change the inclination angle of the inclined surface of the foundation in accordance with the inclination angle of the outer wall surface of the retaining wall as in the related art, thereby making it possible to relatively easily construct the retaining wall.

According to the retaining wall block of the ninth aspect, the depth of the blocks stacked on the foundation is longer than the height of the blocks, so that the stability of the retaining wall against earth pressure is enhanced. be able to.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line AA of a drainage block having a retaining wall structure according to a first embodiment of the present invention.

FIG. 2 is a BB cross-sectional view of the retaining block of the retaining wall structure according to the first embodiment.

FIG. 3 is a front view of the retaining wall structure according to the first embodiment.

FIGS. 4A and 4B are diagrams showing a 5-minute flow path block used in the retaining wall structure according to the first embodiment, wherein FIG. 4A is a perspective view, FIG. 4B is a front view, and FIG. Is a CC sectional view, (d)
Is a cross-sectional view as seen from the DD direction, and (e) is a cross-sectional view as seen from the EE direction.

5A and 5B are diagrams showing a 5-minute drainage block used in the retaining wall structure according to the first embodiment, wherein FIG. 5A is a perspective view, FIG. 5B is a front view, and FIG. FF sectional view, (d)
Is a cross-sectional view as viewed from the GG direction, and (e) is a cross-sectional view as viewed from the HH direction.

FIGS. 6A and 6B are views showing a five-minute basic block used in the retaining wall structure according to the first embodiment, wherein FIG. 6A is a perspective view, FIG. 6B is a front view, and FIG. FIG. 2D is a cross-sectional view as viewed from the JJ direction, and FIG. 3E is a cross-sectional view as viewed from the KK direction.

FIGS. 7A and 7B are diagrams showing a general block for five minutes used in the retaining wall structure according to the first embodiment, wherein FIG. 7A is a perspective view, FIG. 7B is a front view, and FIG. FIG. 3D is a cross-sectional view as viewed from the MM direction, and FIG. 4E is a cross-sectional view as viewed from the NN direction.

FIG. 8 is a sectional view taken along the line P-P showing an example in which the retaining wall structure according to the second embodiment of the present invention is applied to a seawall with a fish nest.

FIG. 9 is a front view of the retaining wall structure according to the second embodiment.

FIG. 10 is a longitudinal sectional view of a drainage block having a retaining wall structure according to a third embodiment of the present invention and having a normal slope of the outer wall surface of 3 minutes.

FIG. 11 is a longitudinal sectional view of a retaining block having a retaining wall structure according to the third embodiment and having a normal slope of an outer wall surface of 3 minutes.

FIG. 12 is a view showing a three-minute basic block used in the retaining wall structure according to the third embodiment, wherein (a) is a perspective view, (b) is a front view, and (c) is Q. -Q sectional view, (d)
Is a cross-sectional view as viewed from the RR direction, and (e) is a cross-sectional view as viewed from the SS direction.

FIG. 13 is a diagram showing a general three-minute block used at the top of the retaining wall structure according to the third embodiment;
(A) is a perspective view, (b) is a front view, (c) is a TT cross-sectional view, (d) is a cross-sectional view viewed from the UU direction, and (e) is a V-
It is sectional drawing seen from the V direction.

FIG. 14 is a longitudinal sectional view of a retaining block having a retaining wall structure according to a fourth embodiment of the present invention and having a normal slope of an outer wall surface of 3 minutes.

FIG. 15 shows a conventional retaining wall structure in which the outer wall has a normal gradient of 5;
It is a longitudinal cross-sectional view of the earth retaining block divided.

[Explanation of symbols]

 Reference Signs List 4 drainage block 5 soil retaining block 6 foundation 6a upper surface of foundation 8 earth and sand 9 gutter 10 outer wall surface 11 basic block 12 drainage block 13 channel block

Claims (9)

[Claims] 1. A flow path block having a box shape opening upward, having an inflow port on a rear wall, and having a drain port on a bottom wall, and being installable below the flow path block. A drain block having a box-like shape opening upward and having a drain port on a front wall. 2. The retaining wall block according to claim 1, wherein a drain port of the front wall has a shape allowing fish to enter and exit. 3. The retaining wall block according to claim 2, wherein openings are provided in left and right side walls of the flow path block. 4. The retaining wall block according to claim 3, wherein an inflow port of the rear wall, a drain port of the bottom wall, and an opening of the side wall provided in the flow path block. A retaining wall block, which is closed with a crushable thin lid. 5. A retaining wall block having a box shape opening upward, having an opening in a front wall through which fish can enter and exit, and which can drain water. 6. A retaining wall block which is installed side by side in the vertical and horizontal directions, has a tubular shape that opens in the vertical direction, and has an opening in each side wall facing the left and right adjacent blocks in the installed state. A block for a retaining wall, comprising: 7. A retaining wall structure in which an outer wall surface of the retaining wall forms a predetermined inclination angle with respect to a horizontal plane, wherein a base portion having a horizontal upper surface and provided with a locking portion is provided on the upper surface of the base portion. A retaining wall structure comprising: a base block installed in a state locked by the locking portion; and a retaining wall block sequentially stacked on the base block. 8. The retaining wall structure according to claim 7, wherein the foundation block is selected from two or more types of foundation blocks having different inclination angles of an outer wall surface with respect to a horizontal plane. Retaining wall structure. 9. The retaining wall block according to claim 1, wherein each of the blocks has a depth dimension longer than a height dimension.