JP2000073330A - Concrete block for revetment and revetment structure using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress influence on surrounding environment to a small degree. SOLUTION: This revetment structure uses a concrete block A formed into rectangular solid block shape having a plurality of vertically piercing fixing holes 11, 11,... and front and rear opening parts 12, 12,..., 13, 13. The concrete blocks A are piled in multiple vertical stages, and earth is filled to fix them through piles. A face of slope is therefore reinforced, and a concrete part exposed to the surface can be minimized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revetment concrete block capable of minimizing the effect on the environment and a revetment structure using the same.

[0002]

2. Description of the Related Art A revetment method such as a concrete block stretching method and a concrete block stacking method applied to rivers, coasts, lakes and marshes uses concrete blocks to reinforce a slope.

[0003] The concrete block is solid and installed so as to be laid on the slope to reinforce the slope. The concrete block is fixed to the surface of the slope via a binder such as cement.

[0004]

According to the prior art, since the concrete block is installed so as to cover the entire surface of the slope, the influence on the surrounding environment including landscape and biological environment becomes excessive. There was a problem that it was prone.

In view of the above-mentioned problems in the prior art, an object of the present invention is to provide a seawall capable of minimizing the influence on the surrounding environment by providing a vertically extending fixing hole and front and rear openings. To provide a concrete block for building and a revetment structure using it.

[0006]

According to a first aspect of the present invention for achieving the above object, there is provided a rectangular parallelepiped block having a plurality of fixing holes penetrating vertically and communicating with the fixing holes. The gist is to have front and rear openings.

The fixing holes may communicate with each other at the rear portion, and openings communicating with the fixing holes may be formed on the left and right end surfaces.

[0008] Further, positioning recesses and projections may be formed on the upper and lower surfaces, and connection recesses and projections may be formed on the left and right end surfaces.

The gist of the second invention is that the concrete block for revetment according to the first invention is piled up in multiple stages along the slope, and the gist is that the concrete block is fixed via a pile.

The concrete block may be filled with soil, and the pile may be a wooden pile.

[0011]

According to the structure of the first aspect of the invention, the fixing holes form openings on the upper and lower surfaces and the front and rear surfaces of the concrete block through the front and rear openings. Therefore, the concrete block can be reduced in weight as a whole, and can be installed on the slope to fill the soil, thereby minimizing the concrete portion exposed on the surface and reducing the influence on the surrounding environment. In addition, the front and rear openings can discharge the water in the glue surface to the outside. The opening on the front surface corresponds to each fixing hole, and the opening on the rear surface corresponds to a plurality of fixing holes or each fixing hole individually. In addition, the concrete block can be made into a surface substrate on which aquatic plants can easily grow by spraying a substrate conversion agent such as ferrous sulfate on the surface.
The part installed underwater can be used as a good fish reef.

If the fixing holes are communicated with each other at the rear portion, the opening of the rear surface of the concrete block can be made sufficiently large, and the integrity of the soil and the slope to be stored therein can be improved.

If the openings communicating with the fixing holes are provided on the left and right end faces, the concrete block can integrally connect the soil housed therein with another concrete block connected continuously on the left and right. Plants that grow on the soil inside can grow large enough.

If the recesses and protrusions for positioning are provided on the upper surface and the lower surface, the concrete blocks can be accurately positioned with respect to the lower stage by fitting the protrusions into the recesses when stacking the concrete blocks in multiple stages. However, there is no danger that the upper stage will inadvertently move relative to the lower stage.

If connecting recesses and protrusions are provided on the left and right end faces, the concrete block can be connected to the left and right when connecting.
The protrusion is fitted into the recess, and the two adjacent ones are appropriately positioned and connected to prevent relative movement in the front-rear direction and the up-down direction.

According to the second aspect, since the concrete block is fixed via the pile, the construction period can be shortened as compared with the case where the concrete block is fixed via a binder such as cement.
Since the pile does not completely block the opening on the front or the fixing hole on the top, there is no risk of hindering the growth of the plant,
There is no danger of the surface appearance becoming monotonous. The pile may be driven in the vertical direction through the fixing hole, or may be driven in the horizontal direction through the front and rear openings.

If the concrete block is filled with soil,
The soil can confine the piles in the concrete block and provide an environment in which plants can grow. The soil may be filled in concrete blocks by mixing plant seeds or the like.

By using a wooden pile as the pile, the wooden pile does not deteriorate the water quality of the surroundings, and the environment in which the concrete block is installed can be kept more favorable. The wood pile may be made of ordinary wood, or may be wood blanks discharged from forest management.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

The revetment concrete block A is formed in a rectangular parallelepiped block shape having an upper surface, a lower surface, a front surface, a rear surface, and left and right end surfaces (FIG. 1).

The concrete block A is formed with a plurality of fixing holes 11, 11 penetrating vertically, and front and rear openings 12, 12,... Communicating with the fixing holes 11, 11,.
13 and 13 are formed. The fixing holes 11, 11 ...
The rear portion communicates with each other at predetermined intervals, and large openings are formed above and below the rear portion. Front opening 12, 1
.. Are formed corresponding to the respective fixing holes 11, and the openings 13, 13 on the rear surface are formed with a plurality of fixing holes 11, 1, respectively.
1... Are formed. Openings 14, 14 communicating with the rear portions of the fixing holes 11, 11,... Are formed in the left and right end surfaces of the concrete block A, and the fixing holes 11, 11,. An opening 15 for connecting the rear portions to each other is formed.

On the upper surface of the concrete block A, recesses 21 for positioning are formed at both ends in the front-rear direction, and on the lower surface, projections 22 for positioning are formed on a front portion on one end side. It is formed at the rear corner. However, FIG. 1 shows only one protrusion 22.
On the left and right end surfaces of the concrete block A, connecting concave portions 25, 25 and projecting portions 26, 26 are formed at corner portions, respectively. The recesses 25, 25, the protrusion 2
As for 6, 26, the former is formed on the lower side and the latter is formed on the upper side on one end face, and the former is formed on the upper side and the latter is formed on the lower side on the other end face. The lower protrusions 26, 26 protrude from the lower surface of the concrete block A by the same height d as the protrusion 22. The width w of each projection 26 is the same as that of each projection 22, and is adapted to the width w1 of each recess 21, 25. The heights ha of the upper protrusions 26 are adapted to the height h1 of the recess 25, and the lower protrusions 26
Numeral 26 is set to correspond to the respective heights hb = h1 + d.

The concrete block A is stacked in multiple steps along the slope M (FIG. 2).
A revetment structure can be formed to reinforce the seawall. However,
Each of the concrete blocks A, A,... Of each step is connected in a longitudinal direction in a cascade, and the upper steps are sequentially offset rearward with respect to the lower steps to be stacked.

The concrete blocks A, A,... Can be connected to the left and right via left and right recesses 25, 25, and projections 26, 26.
It can be stacked up and down via 22, 26, 26 (FIGS. 2, 3). That is, the concrete blocks A, A,... Of each stage can be connected to each other by fitting the adjacent one protruding portion 26, 26 into the other concave portion 25, 25, and the lower adjacent concrete block A, A,.
The upper and lower concrete blocks A, A, and the front protrusion 22 and the lower front protrusion 26 of the upper concrete block A are fitted into the recesses 21, 21 of the upper part A, whereby the front and rear positions can be determined. In addition, the protrusion 2 at the lower front part of the upper concrete block A
Numeral 6 is used as a positioning projection, and is fitted into both the concave portions 21 on the upper surface of the adjacent concrete blocks A on the lower stage.

The lowermost concrete blocks A, A ...
Can be fixed through the piles B, B... By driving the piles B, B... Vertically through the fixing holes 11, 11. Also, the upper concrete blocks A, A...
... can be fixed by filling the soil and driving piles B, B .... The piles B, B... May use concrete piles, iron piles, or the like in addition to the illustrated wooden piles.

In the above description, the stakes B, B,... For fixing the upper concrete blocks A, A... Penetrate the lower concrete blocks A, A. Is also good. The concrete blocks A, A ... have front and rear openings 12, 12, ..., 1 respectively.
.. May be fixed by driving the piles B, B. Furthermore, concrete blocks A, A ...
May be fixed together with the piles B, B,... Driven in the vertical direction and the piles B, B,.

In FIG. 2, the concrete blocks A in each step located at the end of the construction range may be omitted from the concave portions 25, 25 and the protrusions 26, 26 on the end surface on the side exposed to the outside. However, when the lower protrusions 26 are omitted, lower surface protrusions 22 are provided instead.

[0028]

[Other Embodiments] The rear openings 13, 13,... May be formed so as to correspond to the fixing holes 11, 11, respectively (FIGS. 6, 7). However, the fixing holes 11, 11,.
Are formed without communication with each other. Also, a pair of front and rear recesses 21, 21... Are formed in the middle of the upper surface of the concrete block A, and at both ends of the lower surface,
Each pair of front and rear protrusions 22, 22 ... is formed.

Then, concrete blocks A, A ...
Can be installed in a vertically stacked manner with the upper stage offset to the left and right relative to the lower stage (FIG. 8). That is, the concrete blocks A, A,.
The lower concrete blocks A, A are positioned by connecting the lower concrete blocks A, A by fitting the projections 22, 22 on the other end into the other concave portions 21, 21, respectively. However, concrete blocks A, A ...
Are arranged at a predetermined distance D so that the concave portions 21, 21... Correspond to the projecting portions 22, 22,.

In FIG. 8, the concrete blocks A, A,... Of each step may be fixed via stakes B, B,.

[0031]

As described above, according to the first aspect of the present invention, by providing the fixing holes penetrating vertically and the front and rear openings, the fixing holes and the openings are exposed on the surface. In addition to minimizing the amount of concrete to be filled, the inside can be filled with soil to grow plants, and the part installed underwater can be used as a fish reef, minimizing the effect on the surrounding environment Has an excellent effect.

According to the second aspect of the present invention, by fixing the concrete block via the pile, a binder such as cement is not used, so that the construction period can be shortened and the influence on the environment can be reduced. By setting the piles to be wooden piles, the installation environment can be more favorably maintained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the entire configuration.

FIG. 2 is an explanatory view of a use state.

FIG. 3 is an enlarged cross-sectional explanatory view corresponding to the line X1-X1 in FIG.

FIG. 4 is an enlarged explanatory view equivalent to the arrow X2 in FIG. 2;

FIG. 5 is an enlarged cross-sectional view corresponding to the line YY in FIG. 4;

FIG. 6 is a diagram corresponding to FIG. 1, showing another embodiment.

7 is a sectional view taken along the line ZZ in FIG.

FIG. 8 is an explanatory view of a use state of FIG. 6;

[Explanation of symbols]

 A: Concrete block B: Pile 11: Fixing hole 12, 13, 14 ... Opening 21, 25 ... Depression 22, 26 ... Protrusion

Claims (8)

[Claims] 1. A revetment concrete block formed in a rectangular parallelepiped block shape and having a plurality of fixing holes vertically penetrating, and front and rear openings communicating with the fixing holes. 2. The concrete block for revetment according to claim 1, wherein the fixing holes communicate with each other at a rear portion. 3. An opening portion communicating with the fixing hole is formed at left and right end surfaces.
The concrete block for revetment described. 4. The revetment concrete block according to claim 1, wherein concave portions and projecting portions for positioning are formed on an upper surface and a lower surface. 5. The concrete block for revetment according to claim 1, wherein concave portions and projecting portions for connection are formed on left and right end surfaces. 6. The revetment concrete block according to any one of claims 1 to 5 is stacked in multiple stages along a slope, and the concrete block is fixed via a pile. Seawall structure. 7. The revetment structure according to claim 6, wherein the concrete block is filled with soil. 8. The revetment structure according to claim 6, wherein the pile is a wooden pile.