JPS6139015Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention collects water in the soil through the porous cement board by placing a porous cement board at the bottom, or collects water in the soil through the porous cement board. This relates to a concrete block for a U-shaped ditch for constructing a waterway that allows penetration into the concrete block.

As such a U-shaped groove block for drainage channels,
A block is known in which a hole is provided in the side wall or bottom of the block body, and a porous cement plate is fitted and fixed into the hole (for example, proposed in Japanese Utility Model Application No. 154,487/1987). However, such a conventional structure,
There is a risk that the porous cement board may fall off due to earth pressure or other external forces acting on the porous cement board, and there is a risk that the process of forming the block body and the process of forming the porous cement board involve fitting and fixing both. The drawback was that it required three steps and was time-consuming to manufacture.

This idea was made in order to solve the problems of the conventional U-shaped groove blocks for water collection and drainage channels. And a pair of sides perpendicular to this are inclined in opposite directions so that one cross section and the other cross section orthogonal to this are shaped into trapezoids in opposite directions, and when forming the block body, this porous cement plate is used to form the block body. The purpose of the present invention is to provide a U-shaped groove block for a water collection and drainage channel, which is unique in that it is integrally embedded and molded in the bottom of a drainage channel.

Next, further explanation will be given based on the embodiments shown in the drawings.

Figures 1 to 3 are diagrams showing the shape of the porous cement board 1 to be buried in the U-shaped groove block of this invention. Figure 1 is a plan view, and Figure 2 is a section A in Figure 1. FIG. 3 is a diagram showing a cross section at section B in FIG. 1. As shown in the figure, this porous cement board 1 has a pair of sides 1a, 1a and a pair of sides 1b, 1b perpendicular to these inclined in opposite directions to form a cross section at part A and a cross section perpendicular to this. The cross section at part B is formed into trapezoidal shapes in opposite directions.

Porous cement board 1 formed into this shape
As shown in Fig. 4, the block is placed on the inner frame 3 of the formwork 2 for forming the U-shaped groove block body, and is fixed by reinforcing bars (not shown) buried in the block. Concrete is poured into the void 4 of the formwork 2 to form a U-shaped groove block.

FIGS. 5 and 6 are diagrams showing the cross section and longitudinal section of the U-shaped groove block formed in this way.
A porous cement board 1 is buried and fixed in the bottom of the block body 5.
are a pair of sides 1a, 1 that are inclined in opposite directions to each other.
a and 1b, 1b, so when an external force shown by arrow F in FIG. When an external force indicated by arrow P is applied from the outside of the block 5, the sides 1a and 1a are supported by the block main body 5, and when an external force is applied from either direction, the porous cement board 1 is pushed against the main body 5. There is no risk of the block falling off from the block, and this effect is effectively exhibited even when the bonding surface between the block body 5 and the porous cement board 1 is separated due to vibration or external force acting on the block. There is no possibility that 1 will fall off from the main body 5. Furthermore, since this porous cement board 1 is attached during molding of the block body 5 as shown in FIG. U-shaped groove blocks can be manufactured.

As explained above, according to this invention, it is possible to easily manufacture a U-shaped groove block having a filter hole for collecting and draining water using the porous cement board 1 at the bottom, and it is possible to easily manufacture the U-shaped groove block with filter holes for collecting water and water using the porous cement board 1 at the bottom. This has the effect that it is possible to obtain a U-shaped groove block in which there is no possibility that the porous cement board 1 attached thereto will fall off.

[Brief explanation of drawings]

The figure shows an embodiment of this invention, Figure 1 is a plan view showing a porous cement board, Figure 2 is a cross-sectional view at section A, and Figure 3 is a cross-section at section B. 4 is a cross-sectional view showing the state of the mold during molding of the block body, FIG. 5 is a cross-sectional view of the U-shaped groove block, and FIG. 6 is a vertical cross-sectional view of the U-shaped groove block. In the figure, 1 is a porous cement board, and 5 is a block body.

Claims (1)

[Scope of utility model registration request] A pair of sides 1a, 1a and a pair of sides 1b, 1b orthogonal thereto are inclined in opposite directions to form a trapezoid with one cross section and the other cross section orthogonal thereto in opposite directions. A U-shaped groove block for water collection and drainage channels, in which a porous cement board 1 is embedded in the bottom of the block body 5 when it is formed.