JP2003342939A - Built-up block for multi-naturalization and multi- naturalized revetment construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a built-up block for a multi-naturalization contributing to an improvement in workability and the reduction of a cost by eliminating the need for the troublesome connection of the mutual blocks and a multi- naturalized revetment construction method using the block. <P>SOLUTION: The cruciform blocks 2, in which four perforated plate sections 5 with a plurality of openings 4 are arrayed crosswise while stepped sections 6, at which the upper and lower directions are reversed in the mutual perforated plate sections arranged in the same rows, are mounted at the front ends of each perforated plate section 5, and the T-shaped blocks 3, in which three perforated plate sections 8 with a plurality of the openings 7 are arrayed in a T shape while the stepped sections 9, at which the upper and lower directions are reversed among the two mutually adjacent perforated plate sections 8 and one residual perforated plate section 8, are formed at the front ends of each perforated plate section 8, are prepared. These cruciform blocks 2 and T-shaped blocks 3 are mutually connected continuously by superposing the stepped sections 6 and 9, and void regions S1 and S2 surrounded by each perforated plate section 5 and 8 are provided as filling regions for stones, soil or the like. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-naturalization building block that provides an internal air space as a filling area for stones, soil, and the like, and a multi-natural bank protection method using the building block.

[0002]

2. Description of the Related Art In recent years, river revetments have been promoted for the purpose of preserving the natural environment and creating a comfortable waterfront space. Has been proposed and implemented. In this multi-natural revetment method, a stone material such as natural stone is placed and fixed in advance on a porous member such as a net or a grid-like frame, and the whole porous member is installed on the revetment (for example, Japanese Patent Publication No. 7-1112).
No. 1, JP-A-10-331132, etc.) and a large number of precast concrete basket-shaped (or frame-shaped) blocks and double girder-shaped blocks are connected to each other and installed on the revetment, and stones and soil are placed in the voids inside. Block method of filling (eg,
Japanese Patent Laid-Open No. 11-293647) etc., but in the case of the paving stone method, it is relatively difficult to fix the stone material to the porous member. Is becoming popular.

[0003]

However, according to the conventional block construction method, since the cage block and the cross girder block are one independent unit, in order to expand the installation range, these blocks are bolted. However, there is a problem in that the workability is not improved as much as desired because it is necessary to connect them to each other using such connecting means. Further, since the connecting means is required to have corrosion resistance in addition to strength, there is a problem that the connecting means itself becomes high in cost and a heavy cost burden is imposed.

The present invention has been made in view of the problems associated with the above-mentioned block construction method, and its object is to eliminate the need for troublesome connection between the blocks, thereby contributing to improvement in workability and cost reduction. The purpose of the present invention is to provide a multi-naturalization assembling block and a multi-natural revetment construction method using this block.

[0005]

In order to solve the above-mentioned problems, a naturalization assembly block according to the present invention comprises a concrete cross block in which four perforated plate portions are arranged in a cross shape. A step portion is provided at the tip of each perforated plate portion of the cross block so that the perforated plate portions arranged in the same row are turned upside down. It is characterized in that the stepped portions are connected to each other in a state of being overlapped with each other, and the air space surrounded by the perforated plate portions is a filling area for stones, soil, or the like. In addition, the multi-natural revetment method according to the present invention,
After installing the above-mentioned assembly block from the low water area of the revetment to the high water area, stone is filled in the air space of the assembly block installed in the low water area, and soil is filled in the air space of the assembly block installed in the high water area. And In the multi-naturalization assembly block and multi-natural revetment construction method configured in this manner, the installation range is expanded simply by connecting the stepped portions at the tips of the perforated plates to each other and connecting the cross blocks together. No complicated connecting work is required. Also, after filling the air space of this assembly block with stones, soil, etc., the force in both the vertical and horizontal directions is canceled out between the cross blocks arranged adjacent to each other, so the connection state of each cross block Is maintained stable.

The multi-naturalization assembly block further comprises a concrete T-shaped block in which three perforated plate portions are arranged in a T-shape, and the tip of each perforated plate portion of the T-shaped block is A stepped portion whose upper and lower directions are reversed is provided between two adjacent perforated plate portions and the remaining one perforated plate portion, and a plurality of the T-shaped blocks are provided for each of the perforated plate portions. The stepped portions at the tips may be connected to each other in a state of overlapping with the stepped portion of the cross block to define the edge. In this case, a concrete L-shaped block in which two perforated plate portions are arranged so as to form an L-shape is further provided, and the tips of the perforated plate portions of the L-shaped block are turned upside down. Or a step in the same direction is provided, and the L-shaped block is connected so that the step at the tip of the perforated plate portion overlaps the step of the T-shaped block,
It may be configured to define a corner angle. The present naturalization assembly block also includes a modified cross block in which a concave portion or a convex portion is provided instead of the stepped portion at the tip of one of the four perforated plate portions of the cross block, and the modified cross block is provided. The cross block and the deformed cross block having the convex portion may be connected to each other by fitting them in concavo-convex. Since such a deformed cross block can have an arbitrary connection angle due to the concave and convex fitting, by disposing these at the bending portion of the installation surface, it is possible to bend the main assembly block while maintaining continuity. .

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show a first embodiment of a multi-naturalization assembly block according to the present invention. In the first embodiment, the assembly block 1 is composed of a large number of cross blocks 2 and a large number of T-shaped blocks 3. As shown in FIG. 2, each cross block 2 has a shape in which four perforated plate portions 5 having a plurality of openings 4 are arranged in a cross shape. At the tip of each perforated plate portion 5 of this cross block 2, a stepped portion 6 is provided, in which the perforated plate portions lined up in the same row are turned upside down. And step 6
And is integrally molded from precast concrete. On the other hand, each T-shaped block 3 has a shape in which three perforated plate portions 8 having a plurality of openings 7 are arranged in a T-shape, as shown in FIG. At the tip of each perforated plate portion 8 of this T-shaped block 3, a stepped portion 9 is provided which reverses the upper and lower directions between two adjacent perforated plate portions 8 and the remaining one perforated plate portion 8. Is provided for each T
The character block 3 is integrally formed from precast concrete in a form having the opening 7 and the step portion 9.

The plurality of cross blocks 2 are connected to each other in such a manner that the stepped portions 6 at the tips of the perforated plate portions 5 overlap each other, whereby a plurality of perforated plates are provided between the cross blocks 2. A large number of square-shaped air spaces S1 surrounded by the portion 5 are formed. Therefore, the assembly block 1 is formed by connecting a large number of cross blocks 2 with the step portions 6 overlapped with each other in the vertical and horizontal directions.
It becomes a lattice-like structure having an infinite extent. On the other hand, the plurality of T-shaped blocks 3 are connected to each other in such a manner that the stepped portions 9 at the tips of the respective perforated plate portions 8 are overlapped with each other and the cross block 2, so that the respective T-shaped blocks 3 are connected. A large number of air spaces S2 surrounded by the perforated plate portions 8 and 5 are formed between the cross block 2 and each other. The T-shaped block 3 plays a role of defining an end edge of the assembly block 1. By arranging the T-shaped block 3 on one side of the cross block 2 that is connected in an appropriate number, the entire T-shaped block 1 of the assembly block 1 is arranged. The size becomes defined. In addition, the airspace S
The sizes of 1 and S2 are arbitrary, but as an example, the length and the width are set to about 1 to 2 M and the depth is set to about 30 to 70 cm.

The assembly block 1 constructed as described above is
The air spaces S1 formed between the cross blocks 2 and the air spaces S2 formed between the cross blocks 2 and the T-shaped blocks 3 are filled with stones or soil, and, if desired, seeds of plants are contained in the soil. Sowing or transplanting seedlings will contribute to the naturalization. The assembly block 1 is expanded by simply connecting the cross block 2 and the T-shaped block 3 to each other by connecting the step portions 6 and 9 at the tips of the perforated plate portions 5 and 8 to each other so that they are connected to each other. There is no special difficulty, and the workability is excellent.
Moreover, after the stones and soil are filled in the air spaces S1 and S2, the lateral forces are offset between the cross blocks 2 arranged adjacent to each other, so that the cross blocks 2 are displaced from each other. It does not occur and these connected states are maintained stably. However, during the assembling of the blocks 2 and 3 and during the filling of soil or the like into the air spaces S1 and S2, the lateral forces may be unbalanced and the blocks 2 and 3 may be displaced. For example, a U-shaped pressing metal fitting may be fitted to the overlapping portion (joint) of the step portions 6 and 9 to temporarily fix the blocks 2 and 3 to each other.

Here, in the assembly block 1, the overlapping margin of the step portion 6 of the cross blocks 2 and the overlapping margin of the step portion 6 of the cross block 2 and the step portion 9 of the T-shaped block 3 are directed in one direction. By gradually changing it, a fan-shaped spread is obtained as shown in FIGS. 4 and 5. in this case,
A gap δ will be formed in the overlapped portion (joint) of the step portions 6 and 9, but after filling the air spaces S1 and S2 with stones or soil, the cross blocks will be offset by the above-mentioned lateral force cancellation. Since the two are prevented from being displaced from each other, the fan-shaped spread described above is stably maintained. However, during the assembling of the blocks 2 and 3 and during the filling of soil or the like into the air spaces S1 and S2, the lateral forces may be unbalanced and the blocks 2 and 3 may be displaced. An appropriate spacer may be interposed in each of the gaps δ described above to maintain the gap.

Further, in the assembly block 1, as shown in FIGS. 6 and 7, the L-shaped block 10 may be arranged at a corner portion. As shown in FIG. 7, the L-shaped block 10 has a shape in which two perforated plate portions 12 having a plurality of openings 11 are arranged in an L-shape. At the tip of each porous plate portion 12 of the L-shaped block 10, a step portion 13 is provided which reverses the upper and lower directions, and each L-shaped block 10 has the opening 11 and the step portion 13. And is integrally molded from precast concrete. Each L-shaped block 10 is connected to the T-shaped block 3 such that the stepped portion 13 at the tip of each porous plate portion 12 overlaps the stepped portion 9 of the porous plate portion 8 of the T-shaped block 3. Each L-shaped block 10 and T
An air space S3 surrounded by the perforated plate portions 12, 8 and 5 is formed between the character block 3 and the cross block 2. The L-shaped block 10 plays a role of defining a corner angle of the assembly block 1. By the arrangement of the L-shaped block 10, the assembly block 1 has a rectangular shape with a clear outline. In addition, this L-shaped block 10
Depending on the number of T-shaped blocks 3 arranged, each perforated plate portion 1
L-shaped block 1 in which the direction of the step 13 is the same for 2
In some cases, 0'is required (see FIG. 8).

FIGS. 8 to 9 show a second embodiment of the naturalization assembly block according to the present invention. The assembly block 20 as the second embodiment has a longitudinal direction. The bent portions 21 are provided at two positions. This bent part 2
1 is set to the overlapping portion of the modified cross block 22 (22A, 22B) and the overlapping portion of the modified T-shaped block 23 (23A, 23B). The entire structure of the assembly block 20 is the same as that of the assembly block 1 (FIG. 1), and the basic structures of the modified cross block 22 and the modified T-shaped block 23 are the cross block 2 (FIG. 2) and the T-shaped block 3 respectively. Since it is the same as (FIG. 3), the same parts as those shown in FIGS.

As shown in FIG. 9, the modified cross block 22 has a recess 24 at the tip of one of the four perforated plate portions 5 of the cross block 2 instead of the step 6.
And a second block 22B provided with a convex portion 25 similarly to the first block 22A provided with. First block 2
The 2A and the second block 22B are connected to each other by fitting the concave portions 24 and the convex portions 25 together (concave and convex fitting), and therefore, both can take an arbitrary connecting angle θ1 as shown in FIG. It is like this. On the other hand, the modified T-shaped block 23
Is one of the three perforated plate portions 8 of the T-shaped block 3
At one end, a first block 23A having a concave portion instead of the step portion 9 and a second block 23B having a convex portion are provided at the same tip. First block 23A and second block 2
3B and 3B are connected to each other by fitting them in concavo-convex, so that both can take an arbitrary connection angle θ2 as in the modified cross block 22. By arranging such a modified cross block 22 and a modified T-shaped block 23 at appropriate positions while fitting them in a concavo-convex manner, the bent portion 21 can be attached to the main assembly block 20 while maintaining continuity, and thus the book The assembly block 20 is useful for a river bank with many curved surfaces.

FIG. 10 shows a multi-natural revetment construction method using the assembly block 20 according to the second embodiment. In the figure, A is a low water area including a part of the riverbed 30 and a lower portion 31a of the slope 31, and B is a high water area including an upper portion 31b of the slope 31 and the top 32. In the Honda Natural Revetment Construction Method, the deformed cross block 22 and the deformed T-shaped block 23 are arranged at the boundary between the riverbed 30 and the slope 31 and at the boundary between the slope 31 and the top end 32 to form the bent portion. The assembly block 20 is installed on the revetment, forming 21 (FIG. 8). When the assembly block 20 is installed, a suction preventive material (sheet) may be previously laid on the installation surfaces of the low water area A and the high water area B.

When the installation of the assembly block 20 is completed, stones 33 such as rubble stones and rubble stones are installed in the high water area in the air spaces S1 to S3 (FIG. 8) of the assembly block 20 installed in the low water area A. The soils 34 are filled in the air spaces S1 to S3 of the block 20, respectively. If necessary, the upper surface of the assembly block 20 installed in the low water area A is covered with a net (turtle shell net) 35, and if desired, the soil 34
The seeds of the plants are sown inside or the seedlings are transplanted. The natural revetment constructed in this way stabilizes the riverbed 30 in the underwater part and provides a habitat for fish, and in the land part it provides a habitat for plants and animals, protecting the natural environment and providing comfort. It will greatly contribute to the creation of the waterfront space.

[0016]

As described above, according to the multi-naturalization assembly block and the multi-natural bank construction method using this assembly block according to the present invention, a plurality of cross-shaped blocks are mutually stepped. Since the installation is completed simply by connecting them while overlapping, there is no need for the troublesome work of connecting the blocks with the connecting means as in the past, which not only greatly improves the workability but also greatly contributes to the significant reduction in the construction cost. However, its utility value is enormous.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a naturalization assembly block according to the present invention.

FIG. 2 is a perspective view showing the structure of a cross block that constitutes the main assembly block.

FIG. 3 is a perspective view showing a structure of a T-shaped block which constitutes the main assembly block.

FIG. 4 is a perspective view showing an assembled state when the main assembly block is constructed in a fan shape.

FIG. 5 is a plan view showing an assembled state when the main assembly block is constructed in a fan shape.

FIG. 6 is a partial perspective view showing the structure of the main assembly block in which corner angles are defined.

FIG. 7 is a perspective view showing a structure of an L-shaped block which constitutes the main assembly block.

FIG. 8 is a perspective view showing a second embodiment of the naturalization assembly block according to the present invention.

FIG. 9 is a perspective view showing the structure of a modified cross block used in the second embodiment.

FIG. 10 is a cross-sectional view showing a multi-natural revetment constructed using this assembly block.

[Explanation of symbols]

1, 20 Assembly block 2 cross block 3 T block 5 Perforated plate part of cross block Step part of 6 cross blocks 8 T-block perforated plate 9 T-shaped block step 10, 10 'L-shaped block 12 L-shaped perforated plate 13 L-shaped block step 22 Modified Cross Block 23 Modified T-shaped block 33 stones, 34 soil A low water area, B high water area

Claims (5)

[Claims] 1. A concrete cross block in which four perforated plate portions are arranged in a cross shape, and the perforated plate portions of the cross block are provided with upper and lower perforated plate portions arranged in the same row. Is provided with a step portion which reverses the direction, and a plurality of the cross blocks are connected so that the step portions at the tips of the perforated plate portions are overlapped with each other, and the air space surrounded by the perforated plate portions is stoned. ,
Multi-naturalization building block characterized by being filled with soil. 2. A concrete T-shaped block in which three perforated plate portions are arranged so as to form a T-shape, and the T-shaped block is provided.
At the tip of each perforated plate portion of the letter block, a stepped portion which reverses the upper and lower directions between two adjacent perforated plate portions and the remaining one perforated plate portion is provided. The plurality of character blocks are connected to each other in such a manner that the step portions at the tips of the perforated plate portions are overlapped with each other and the step portions of the cross block to define the edge. Assembly block for multi-naturalization. 3. A concrete L-shaped block in which two perforated plate portions are arranged so as to form an L-shape, further comprising:
At the tip of each porous plate part of the letter block, a step part which reverses the upper and lower directions or a step part of the same direction is provided,
3. The natural material according to claim 2, wherein the L-shaped block is connected in a state where the stepped portion at the tip of the perforated plate portion overlaps the stepped portion of the T-shaped block to define a corner angle. Assembly block for chemical conversion. 4. A modified cross block having a recess or a projection instead of a step at the tip of one of the four perforated plate portions of the cross block, and the modified cross block having the recess and the projection. 4. The deformed cross block having the above-mentioned shape is connected to each other by fitting the concave and convex portions together.
The building block for naturalization according to any one of 1. 5. After installing the assembly block according to any one of claims 1 to 4 from a low water area to a high water area, stones are installed in the high water area in the air space of the assembly block installed in the low water area. A multi-natural revetment method characterized by filling soil in the air spaces of the building blocks.