JPS6328968Y2 - - Google Patents

Description

[Detailed explanation of the invention] Industrial field of application This invention relates to a revetment structure that also serves as a fish reef in rivers, etc., by integrating stacked precast concrete blocks with cast-in-place reinforced concrete, and filling the blocks with chestnut stone. It becomes.

BACKGROUND OF THE INVENTION In recent years, seawalls using concrete blocks such as tension blocks have been widely constructed as seawalls for flood control works and the like. However, revetments made of stretch blocks not only lack integrity and stability, but also prevent the growth of algae, etc., and because the surface is flat, the flow velocity on the revetment surface is high, and when the flow rate is large, it is a place where fish can escape. It is also leading to the destruction of nature, such as the loss of natural resources. This can be seen in the fact that the number of fish that used to be abundant around snake cages has decreased significantly since the construction of concrete sea walls.

Purpose of the invention This invention was devised based on the circumstances mentioned above, and in addition to integrating the stacked blocks with reinforced concrete cast on site, it also uses chestnut stone to prevent the growth of algae that adheres to the chestnut stone. Planning,
The purpose is to provide a seawall structure that also serves as a fish reef and is suitable for the growth of young and adult fish.

Composition of the invention The revetment structure of this invention consists of precast concrete blocks (hereinafter simply referred to as blocks),
It consists of cast-in-place reinforced concrete and maroon stone filled on top of the blocks.

The central part of the block is formed into an L-shaped cross section by a back wall that is in contact with the slope surface and a diagonal wall that rises diagonally upward from the lower part of the back wall. It has a connecting part. This connecting portion forms a hollow columnar portion that faces the connecting portions of adjacent blocks and continues in the vertical direction.

These blocks are stacked up, down, left and right along the slope, and reinforcing bars are placed in the vertical hollow columns formed by the joints of each block, and concrete is cast and filled to form an integrated wall-like structure. Configure. In addition, by providing the connecting portions of each block with a concave and convex fitting portion that engages with each other, positioning can be facilitated and the integrity between the blocks can be improved.

After stacking the blocks, chestnut stone is filled on top of the blocks, that is, between the back wall and the sloping wall of the blocks to improve the stability of the seawall and to use the area as a fish reef.

Embodiment FIG. 1 is a perspective view showing the external shape of a block 1 and the state of construction. The block 1 consists of a back wall 2, an inclined wall 3, and a connecting part 4, and is produced as a precast concrete block in a factory. The connecting portions 4 at both ends face the connecting portions of the adjacent blocks 1 to form a hollow rectangular portion, and the connecting portions 4 of the blocks 1 are arranged above and below.
A hollow columnar part is formed by stacking them.
This hollow columnar part is provided to integrate the stacked blocks 1, and as shown in the figure, reinforcing bars 8 are inserted and concrete 9 is poured and filled.

In the figure, reference numeral 5 denotes a through hole provided in the slanted wall, which allows communication between the upper and lower blocks 1, to disturb the water flow to reduce the flow velocity, and to serve as a passage for fish. Also, 6 in the figure,
Reference numerals 7 denote a fitting concave portion and a fitting convex portion provided on the upper and lower sides of the block 1, respectively, and these portions can be engaged to increase the connection strength between the blocks 1 and can also be used for positioning.

FIG. 2 is a front view showing the blocks 1 stacked vertically and horizontally, and the blocks 1 are filled with chestnut stone 10 as shown in the longitudinal sectional view of FIG. Since Kuriteshi 10 is a natural stone, algae etc. easily adhere to the surface.
They serve as food for young fish, and the gaps between the 10 chestnut stones serve as homes for fish, making the entire seawall structure a fish reef.

Effects of the invention By stacking the blocks, the joints at both ends of the blocks form a hollow columnar section, and reinforcing bars are placed inside the hollow columnar section and concrete is cast and filled, so that the entire structure forms a single wall on the river bank. Protect the slope.

Unlike conventional tension blocks, the surface is not flat, but has a three-dimensional structure, and is filled with chestnut stone, so it is possible to reduce the flow velocity near the slope of the riverbank.

Filling with chestnut stone allows algae to adhere to the seawall more easily than a seawall made only of concrete blocks, and the entire seawall structure can be used as a fish reef to create an environment suitable for fish to live.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the construction process, Fig. 2 is a front view showing the stacked blocks, and Fig. 3 is a longitudinal cross-sectional view of the revetment structure of this invention. 1...Block, 2...Back wall, 3...Slanted wall,
4... Connecting portion, 5... Through hole, 6... Fitting recess, 7
...Fitting convex portion, 8...Reinforced bar, 9...Concrete, 10...Kurite stone.

Claims (1)

[Scope of utility model registration request] A back wall that comes into contact with the slope, a slanted wall that rises obliquely upward from the lower side of the back wall, and a hollow columnar section that is provided at both ends and continues vertically facing the connecting portion of the adjacent block. The blocks are stacked vertically and horizontally along the slope, and are integrated by placing reinforcing bars in the hollow pillar-shaped parts and pouring and filling them with concrete. A seawall structure characterized by filling the space between the wall and the sloped wall with chestnut stone.