JP3559250B2 - Concrete block for earth retaining - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a concrete block for retaining soil.
[0002]
Problems to be solved by the prior art and the invention
Recently, large retaining wall blocks have been frequently used, but the larger the size, the higher the strength is required.
[0003]
If the wall thickness is increased to satisfy the strength, the weight is inevitably very heavy, which makes it difficult to carry and handle.
[0004]
In this respect, the present invention is revolutionary in that it is lightweight and easy to handle, is easy to mold, can be mass-produced inexpensively, and can be easily constructed with a large retaining wall that is strong and inclined backward as it goes upward. It is intended to provide a concrete block for retaining soil.
[0005]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0006]
A front wall 2 is provided at the front of the bottom plate 1 and a rear wall 3 is provided upright at the rear of the bottom plate 1 behind the front wall 2 to form a block body 4 having a U-shaped cross section. The space between the parts 2 and 3 is configured as a storage part 6 capable of storing soil 5A, stone, concrete waste material, debris 5B, and the like as a heavy load 5, and at least an upper open part of the storage part 6 is formed as the storage part 6. The block 4 is provided with a through-hole 8 at least in the bottom plate 1 and the rear wall 3 so that water can flow through the storage portion 6. A leg 9 is formed, and a leg 10 protrudes forward from a lower portion of the front wall 2 of the block body 4 so as to be engaged with an upper edge of the front wall 2 of the block body 4 at a lower portion of the leg 10. A wall engaging portion 11 is provided, or a rear wall engaging portion 12 capable of engaging with the upper edge of the rear wall 3 of the block body 4 is provided on the bottom plate 1; When the block bodies 4 are stacked and installed in multiple stages up and down via the front wall engaging portion 11 or the rear wall engaging portion 12, a large retaining wall A inclined rearward as it goes upward is formed. It relates to a concrete block for retaining.
[0007]
The bottom plate (1) and the rear wall (3) are provided with large through-holes (8) in the bottom plate (1) and the rear wall (3) of the block body (4), and the bottom plate (1) and the rear wall (3) are framed. It relates to a concrete block for retaining soil.
[0008]
Further, the leg portions 10 project from the lower left and right portions of the front wall 2 of the block body 4 in a substantially horizontal state, respectively, so that the block body 4 installed between the left and right leg portions 10 is opened upward. The concrete opening block 7 according to any one of claims 1 and 2, wherein the charging opening 7 is exposed.
[0009]
A communication hole 13 is provided in the front wall 2 of the block body 4 for communicating the storage portion 6 with the outside of the front wall 2. The concrete block for retaining soil according to any one of claims 1 to 3, characterized in that the concrete block is configured to be drained.
[0010]
Further, a rod-shaped water-permeable material 14 is provided so as to bridge the communication hole 13 and the lightening through-hole portion 8 of the rear wall 3, and the moisture in the storage portion 6 is reduced through the water-permeable material 14. The soil retaining concrete block according to claim 4, wherein the concrete block is configured to be drained to the outside of the wall 2.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.
[0012]
A front retaining wall 2 and a rear wall 3 are erected on the front and rear of the bottom plate 1 so as to form a U-shaped cross section, and at least a lightening through hole 8 is provided in at least the bottom plate 1 and the rear wall 3. The concrete block requires less amount of concrete for forming the block body 4 than a cylindrical or box-shaped block or a block without a hollow portion, so that the cost can be reduced, and the U-shaped block is used. The body 4 is easily molded since the die is easily removed, and mass production is excellent and mass production is possible at low cost.
[0013]
In addition, since the weight of the block body 4 itself is reduced by using a small amount of concrete, the installation work of the block body 4 can be performed extremely easily and safely.
[0014]
The method of installation will be described in detail. A foundation is made on site, a block 4 made in a factory is installed side by side on this foundation, and the block 4 is attached to the earth wall surface. Then, the block body 4 is installed and fixed on the foundation by an appropriate means.
[0015]
Next, for example, soil 5A, stone, concrete waste material, debris 5B, or the like as a heavy object 5 is charged and stored in the storage section 6 of the block body 4 from the input opening section 7 to add weight to the block body 4.
[0016]
Further, another block body 4 is stacked on the upper part of the installed block body 4 in a multi-stage manner. At this time, the legs 10 of the block body 4 arranged above are attached to the upper edge of the front wall 2 of the lower block body 4. And the bottom plate 1 of the upper block body 4 is placed on the upper edge of the rear wall 3 of the lower block body 4, and the front wall provided simply below the leg 10 of the upper block body 4 The upper edge of the front wall 2 of the lower block 4 is engaged with the engaging portion 11, or the rear wall of the lower block 4 is engaged with the rear wall engaging portion 12 provided on the bottom plate 1 of the upper block 4. The upper and lower block members 4 are stacked in a positioning state by engaging the upper edge portion 3.
[0017]
Also, the heavy objects 5 are charged and stored in the storage portions 6 of the block bodies 4 stacked upward in the same manner as described above to add weight.
[0018]
Then, since the legs 10 protrude forward from the front wall 2, the position of the block body 4 shifts rearward step by step, and a large retaining wall A inclined rearward as it goes upward is formed. Moreover, since the large retaining wall A is weighted by the heavy object 5 to each block body 4, the large retaining wall A is less likely to be laterally displaced and can withstand the strength pressure.
[0019]
Therefore, the blocks 4 of the present invention, which are lightweight and easy to handle, are arranged on the foundation, and the heavy objects 5 are stored in the storage portion 6, and then the other blocks 4 are stacked on the arranged blocks 4, and the heavy objects 5 are stacked. By simply repeating the storing operation, the large retaining wall A inclined backward can be easily constructed.
[0020]
In this case, since the block body 4 has the water passing portion 9 in the storage portion 6 formed by the lightening through hole portion 8 provided at least in the bottom plate 1 and the rear wall 3, for example, a large amount of water is soiled. Even when the water flows into the wall surface, the water does not stop in the block body 4 and the water flows downward. Therefore, since the water in the earth wall surface is not stopped by the block body 4, the earth wall surface does not easily collapse.
[0021]
【Example】
A specific embodiment of the present invention will be described with reference to the drawings.
[0022]
As shown in FIGS. 1A and 1B, the block body 4 of this embodiment has a front wall 2 at the front of the bottom plate 1, a rear wall 3 at the rear of the bottom plate 1 with the front wall 2 behind. The block body 4 has a U-shaped cross section without standing right and left side walls. Reinforcing strips 15 are integrally provided on the upper front surface of the front wall 2 and the upper rear surface of the rear wall 3 to increase the strength.
[0023]
In addition, the space between the front and rear walls 2 and 3 of the block body 4 is configured as a storage unit 6 that can store soil 5A, stone, concrete waste material, debris 5B, and the like as a heavy load 5, and the storage unit 6 The upper opening portion is configured as a charging opening portion 7 for charging the heavy object 5 into the storage portion 6.
[0024]
In this embodiment, as shown in FIG. 1, a large lightening through hole 8 is provided in the bottom plate 1 and the rear wall 3 of the block body 4, and the bottom plate 1 and the rear wall 3 are formed in a frame shape. are doing. Describing in more detail, the rear wall 3 is formed with two large rectangular lightening through holes 8 arranged side by side at two places on the left and right.
[0025]
Therefore, the provision of the lightening through-hole 8 reduces the amount of concrete used for molding the block body 4 and reduces the weight of the block body 4 to facilitate handling. Note that the front wall 2 cannot be provided with the lightening through-hole portion 8 in order to reliably exert the effect of preventing the stagnation of the earth wall surface and the outflow of the heavy object 5 stored in the storage portion 6.
[0026]
In addition, a lightening through hole 8 provided in the bottom plate 1 and the rear wall 3 is formed in a water passage 9 in the storage portion 6, and water in the soil wall surface is formed through the through hole 8. It is configured to flow downward.
[0027]
Further, in this embodiment, a communication hole 13 is provided in the front wall 2 of the block body 4 to communicate the storage portion 6 with the outside of the front wall 2.
[0028]
More specifically, the communication holes 13 are provided at two locations on the left and right sides of the front wall 2 below the front wall 2. In addition, a rod-shaped water-permeable material 14 (sand mat) having a length substantially matching the width between the front and rear walls 2 and 3 of the block body 4 is fitted into the communication hole 13 so as to insert the water-permeable material 14 as shown in FIG. The water penetrating into the storage portion 6 through the water permeable material 14 is drained to the outside also from the front wall 2 of the block body 4. It is configured so that:
[0029]
The water permeable material 14 has a cross-sectional shape set so that it can be fitted with the communication hole 13 just closed, and the heavy material 5 in the storage portion 6 flows out of the communication hole 13 by the water permeable material 14. Is preventing that.
[0030]
In this embodiment, a leg 10 is integrally formed at a lower portion of the front wall 2 of the block body 4 so as to project forward.
[0031]
More specifically, the leg portions 10 protrude in a substantially horizontal state at intervals at lower left and right portions of the front wall 2 of the block body 4. Therefore, by providing the legs 10 only on the left and right portions below the front wall 2 in this manner, the block body 4 is formed as compared with the case where the legs 10 are formed longer along the width direction of the front wall 2. The amount of concrete required for the operation is small, and the cost can be reduced.
[0032]
Also, between the legs 10 projecting from the left and right portions of the front wall 2 at intervals, the opening 7 for opening, which is the upper opening of the block body 4 installed below, is exposed. When the soil 5A is stored as the heavy load 5 in the storage section 6 as described later, as shown in FIG. 5, the plants 10 vegetated in the soil 5A are stacked on the legs 10 of the block body 4. It is configured so that it can be seen from a distance.
[0033]
A front wall engaging portion 11 is provided below the left and right legs 10 so that an upper edge of the front wall 2 of the block body 4 can be locked. A rear wall engaging portion 12 that can be stopped is provided.
[0034]
More specifically, as shown in FIGS. 3 and 4, a concave portion is formed in the lower portion of the left and right legs 10 as a front wall engaging portion 11 into which the upper edge of the front wall 2 of the block body 4 is fitted and engaged. In addition, a recess is formed as a rear wall engaging portion 12 at which the upper edge of the rear wall 3 of the block body 4 can be locked at a position slightly behind the intermediate portion of the lower surface of the bottom plate 1.
[0035]
Therefore, by simply lowering the other block body 4 from above the block body 4, the front wall engaging portion 11 and the upper edge of the front wall 2 are engaged and locked, and the rear wall engaging portion 12 and the rear wall 3 The edge is engaged and locked.
[0036]
Further, although not shown in the present embodiment, for example, by projecting projections which are engaged with the rear surface of the front wall 2 and the rear surface of the rear wall 3 at the lower portion of the leg portion 10 and the lower surface of the bottom plate 1, respectively. The front wall engaging portion 11 and the rear wall engaging portion 12 may be configured, or may have other configurations.
[0037]
Therefore, in the present embodiment, when the plurality of block bodies 4 are stacked and installed in multiple stages in the vertical direction by protruding the legs 10 in front of the front wall 2, the blocks above the blocks 10 are provided. The body 4 is configured to be stacked in a state of being displaced rearward, so that the block body 4 is stacked in a step-like manner, and a large retaining wall A that is inclined rearward as it goes upward is formed. Make up.
[0038]
Although FIGS. 1 to 5 show the first embodiment in which the front wall 2 has no pattern, the second embodiment shown in FIG. 6, the third embodiment shown in FIG. 7, and the fourth embodiment shown in FIG. In each case, different patterns are applied to the front wall 2 of the block body 4. Of course, decorative patterns other than the second to fourth embodiments may be applied to the front wall 2 of the block body 4.
[0039]
Next, an installation method using the concrete block for retaining of the present embodiment will be described.
[0040]
In this embodiment, the residual soil 5A generated at the installation site of the block body 4 is used as the heavy load 5.
[0041]
This residual soil 5A has conventionally been transported and disposed of at a high cost, but by using it as a heavy material 5 in this way, the transfer cost and the disposal cost can be reduced, so this method is extremely useful. .
[0042]
For example, a foundation is made along the soil wall at the site, and the blocks 4 formed in a factory are placed side by side on the foundation, and the blocks 4 are attached to the soil wall, and in this state, The block body 4 is installed and fixed on a foundation with a hardener or the like.
[0043]
In addition, the block 4 installed at the lowermost stage does not have the leg 10 at the lower part of the front wall 2 and shows a case where the side grooved block body 4 in which the side groove 16 is formed is used. In addition, in the block body 4 with the side groove 16 disposed at the lowermost stage, the front wall engaging portion 11 and the rear wall engaging portion 12 are not provided because they are unnecessary.
[0044]
In this embodiment, when arranging the block bodies 4 on the left and right, as shown in FIG. 1, a connecting member 17 having a U-shaped cross section is inserted between the left and right side edges of the bottom plate 1 of the left and right block bodies 4 from above. The left and right free ends of the connecting member 17 are inserted into the lightening through-holes 8 of the bottom plate 1 to firmly connect the left and right block bodies 4.
[0045]
Further, the heavy object 5 (for example, the residual soil 5A) in which the free ends of the left and right ends of the connecting member 17 are stored in the storage portion 6 of the block body 4 stacked on the ground or below through the lightening through hole 8 ), And the piercing effect of the connecting member 17 makes it difficult for the block body 4 to slip forward when earth pressure is applied.
[0046]
Next, a large number of debris 5B is thrown into and stored in the storage section 6 of the lowermost block body 4 from the throw-in opening section 7 to add weight.
[0047]
Using the front wall engaging portion 11 and the rear wall engaging portion 12, another block body 4 is stacked and fixed on the upper part of the lowermost block body 4 installed, and the stacked block body 4 is fixed. In the same manner as described above, the remaining portion 5A is charged and stored in the storage portion 6 to add weight.
[0048]
Hereinafter, similarly, the desired number of blocks 4 are stacked, and the remaining soil 5A is put into the storage section 6 to add weight.
[0049]
Then, since the weight is added by the residual soil 5A, the block body 4 is less likely to be laterally shifted, and a large retaining wall A that can withstand a strong earth pressure is completed.
[0050]
FIGS. 3 and 5 show a case where the block bodies 4 are stacked in a staggered manner. In this case, the end portions of the large retaining wall A are formed so that the left and right portions are substantially flush with each other. It is preferable to use a block body 4 having a small width.
[0051]
Therefore, the operation of simply arranging the blocks 4 preformed at the factory, putting the soil 5A into the storage section 6, and then stacking the blocks 4 on the installed block 4 and storing the soil 5A is repeated. Thus, a large-sized retaining wall A that can withstand strong earth pressure is completed, so that the installation work can be performed easily and quickly.
[0052]
At this time, since the water passing portion 9 is formed in each block body 4 constituting the large retaining wall A by the lightening through-hole portion 8, the water in the earth wall surface from the water passing portion 9 is extremely excellent. As a result, the water in the storage section 6 is drained to the outside of the front wall 2 via the communication hole 13 and the water-permeable material 14.
[0053]
In addition, since a large number of debris 5B is stored in the storage section 6 of the lowermost block body 4, the gap formed between the debris 5B allows the water passage section 9 and the front wall 2 having good water permeability to be formed. A drainage channel to the outside is formed, and an extremely good drainage effect is obtained.
[0054]
Therefore, even when a large amount of water flows into the soil wall due to heavy rain, for example, the block body 4 does not hinder the drainage of the water flowing into the soil wall, and drains well to the outside of the large retaining wall A. And the earth wall surface is hardly collapsed.
[0055]
Further, since the installed block bodies 4 are stacked in a step-like manner, and the lower opening portions 7 of the block body 4 are exposed from between the legs 10, a large number of the block bodies 4 are provided as shown in FIG. Plants are vegetated on the exposed soil 5A of the input opening 7, and a large area of the large retaining wall A is greened, so that an extremely beautiful landscape that is familiar with nature is exhibited.
[0056]
It should be noted that the present invention is not limited to the present embodiment, and a specific configuration of each component can be appropriately designed.
[0057]
【The invention's effect】
Since the present invention is configured as described above, the weight of the block body itself is very light and easy to handle, so that the installation work can be performed very easily and safely. It is possible to easily form a large retaining wall that is hardly laterally displaced and that can endure the strength pressure by being weight-added by a heavy object stored in the storage portion, and has a U-shaped cross section and a lightening through-hole portion. Since the block body requires less amount of concrete to be molded than a cylindrical or box-shaped block or a block having no hollow portion, the cost can be reduced, and the die is very easy to mold and easy to mold. Mass production is possible at low cost, and furthermore, the block body has at least a through-hole formed in the bottom plate and the rear wall to form a water passage section in the storage section. Not Rukoto, a breakthrough earth retaining for concrete block soil wall has been soo very practical, such as less likely to collapse.
[0058]
According to the second aspect of the present invention, since the amount of concrete used during molding is further reduced and the weight is further reduced, it is possible to provide a product which is more inexpensive and easy to handle. It becomes a concrete block for retaining.
[0059]
According to the third aspect of the present invention, since the legs are provided only on the left and right portions of the lower portion of the front wall, compared to the case where the legs are formed longer in the width direction of the front wall. Since the amount of concrete required for forming the block body is small, it can be configured at a low cost, and furthermore, since the opening part for opening, which is the upper opening part of the block body installed between the left and right legs, is exposed, For example, when soil is stored as a heavy object in the storage unit, plants vegetated on the soil are exposed from between the legs of the block bodies stacked upward, and a beautiful scenery that is naturally familiar is obtained. It becomes a concrete block for earth retaining with excellent practicality.
[0060]
Further, in the invention according to the fourth aspect, since the moisture in the storage portion is discharged to the outside of the front wall of the block body through the communication hole, the earth wall having a configuration extremely excellent in practical use becomes more difficult to collapse. And concrete blocks.
[0061]
According to the fifth aspect of the present invention, there is provided a concrete block for retaining soil having an extremely excellent configuration in which the water in the storage portion is more preferably discharged to the outside of the front wall of the block body via the water permeable material.
[Brief description of the drawings]
FIG. 1 is an explanatory perspective view showing a first embodiment.
FIG. 2 is an explanatory perspective view showing a connection structure of the block bodies arranged side by side in the first embodiment.
FIG. 3 is an explanatory perspective view showing a state in which the blocks of the first embodiment are vertically stacked.
FIG. 4 is a side view of FIG. 2;
FIG. 5 is an explanatory perspective view showing a use state in which the block bodies of the first embodiment are vertically stacked to form a large retaining wall.
FIG. 6 is a perspective view showing a second embodiment.
FIG. 7 is a perspective view showing a third embodiment.
FIG. 8 is a perspective view showing a fourth embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bottom plate 2 Front wall 3 Rear wall 4 Block 5 Heavy object 5A Soil 5B Debris 6 Storage section 7 Input opening section 8 Lightening through hole section 9 Water passage section 10 Leg section 11 Front wall engaging section 12 Rear wall section Joint 13 Communication hole 14 Water-permeable material A Large retaining wall

Claims (5)

A front wall is provided at the front of the bottom plate, and a rear wall is provided at the rear of the bottom plate at the rear of the front wall to form a block having a U-shaped cross section. In addition to configuring a storage unit capable of storing stones, concrete waste materials, debris, and the like as heavy objects, at least an upper open portion of the storage unit is configured as an input opening unit for inputting a heavy object into the storage unit, At least a lightening through hole is provided in at least the bottom plate and the rear wall of the block body to form a water passage portion in the storage portion, and a leg portion projects forward from a lower portion of a front wall of the block body. A front wall engaging portion capable of engaging with the upper edge of the front wall of the block body is provided at a lower portion of the leg, or a rear wall engaging portion capable of engaging with the upper edge of the rear wall of the block body is provided on the bottom plate, When the blocks are stacked and installed in multiple stages up and down via the front wall engaging portion or the rear wall engaging portion, Earth retaining concrete block characterized by being configured as inclined large retaining wall to the rear is formed enough to go towards. 2. The concrete block for retaining soil according to claim 1, wherein a large through-hole portion is provided in a bottom plate and a rear wall of the block body, and the bottom plate and the rear wall are formed in a frame shape. The leg portion projects in a substantially horizontal state at the lower left and right portions of the front wall of the block body, and the charging opening portion serving as an upper opening portion of the block body installed between the left and right legs. The concrete block for retaining soil according to any one of claims 1 and 2, wherein the concrete block is configured to be exposed. The front wall of the block body is provided with a communication hole for communicating the storage portion and the outside of the front wall, and the water in the storage portion is drained to the outside of the front wall through the communication hole. The concrete block for retaining soil according to any one of claims 1 to 3, wherein A rod-shaped water-permeable material is disposed in a bridging state between the communication hole and the lightening through-hole portion of the rear wall, and the water in the storage portion is drained to the outside of the front wall through the water-permeable material. The concrete block for retaining soil according to claim 4, wherein the concrete block is configured.

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