JPS6321764B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plate-shaped body that has excellent pressure resistance, good conformability to the ground, and good water permeability, and civil engineering materials and construction methods using the same.

Embodiments of the invention will be described in detail with reference to the drawings.

As shown in Figure 1, a number of short cylindrical bodies of approximately the same length made of rigid plastic net pipes with numerous openings are arranged in parallel on a plane, and adjacent short cylindrical bodies can be moved relative to each other to some extent. The disk-shaped body A is formed by firmly connecting the metal rings 2 using a somewhat large metal ring 2.

The short cylindrical bodies used to form the plate-like bodies are not limited to plastic net pipes, but also metal mesh pipes such as wire mesh and expanded metal, and punched metal cylinders with many small holes, which are water resistant and rigid and have a good surface appearance. The material is not particularly limited as long as it has a large number of openings 3. Further, although the cross-sectional shape of the short cylinder is generally circular, it may be polygonal or the like. Furthermore, although it is normal for all the cross-sectional sizes to be the same, it is also possible to combine larger and smaller cross-sectional sizes. Its size is usually 5 to 50 cm in diameter.
Rarely 10 to 30 cm, usually 1 to 30 cm long
cm, preferably 3 to 20 cm.

The short cylindrical bodies are usually arranged in two or more rows, but one row is also acceptable, and the size of the plate-like bodies is usually 10 cm in width.
~3m, preferably 20cm~2m, and the length is usually 1m or more.

In the present invention, the short cylinders may be connected by passing through a strong steel wire 4 or a synthetic fiber rope, as shown in FIG. 2, in addition to the method shown in the embodiment.
In this case, a spherical washer 5 may be interposed so that the connecting portion can move freely to some extent. Furthermore, as shown in FIG. 3, by arranging the short cylinders in parallel on a strong net-like object 6 and fixing the short cylinders to the net-like object, indirect It may be combined with. In this case, it is convenient to connect the disc-shaped bodies together if the net-shaped body is formed to be slightly wider and protrude from the short cylindrical body.

Since the disc-shaped body A of the present invention is constructed as described above, it has the following features.

Cylindrical bodies are generally very strong against pressure from a direction perpendicular to the cut surface, but since the disc-shaped body of the present invention is made of a collection of such cylindrical bodies, its planar pressure resistance is extremely large.

Since it is an assembly of short cylindrical bodies with many openings, the disc-shaped body itself has excellent water permeability. In addition, when the plate-shaped body is laid in soil, the soil is continuous through the opening, so it blends well with the soil.

Since the short cylindrical bodies are connected to each other so that they can move freely to some extent, it is suitable for installation on uneven ground. Furthermore, it is possible to follow up even if the ground subsides after installation. Also, since it can be rolled up, it is convenient to make long products.

It is virtually impossible to lay out small short cylinders one by one at the construction site, and it is virtually impossible to lay them out one by one at the construction site, and if each one is independent, it may fall over due to external force, which is of no use. It disappears. In the present invention, since they are assembled in advance to a certain size as factory products, construction is easy and connection is reliable.

The disc-shaped body of the present invention having the excellent properties as described above is used in the following manner.

The surface of roads in mountainous areas is often gouged by running water, and unpaved roads even in flat areas become muddy and prone to ruts. As shown in Figure 4, if you lay a board and fill it with a material with good drainage, such as gravel 7, you can prevent scree and ruts caused by running water, and the gravel will be inside the board and will not dissipate. It can be prevented.

When planting trees on steep cut slopes, methods such as laying nets and adding soil are used, but it is difficult to find an appropriate method to effectively prevent the soil from flowing away. If the plate-shaped body of the present invention is fixed to the slope and then covered with soil, the diameter of a normal slope frame is about 1 m on a side, but the plate-shaped body of the present invention has a diameter of 10 to 10 m.
It is made of a small 30cm short cylinder, and rain water can be easily drained away, making it extremely effective in preventing soil from flowing out. In particular, the effect is even better if the wires connected by the net-like material 6 shown in FIG. 3 are laid with the net-like material on the upper surface. When used on a slope, as shown in FIG. 5, a method may be used in which a plate-like material is laid down and a large net-like material 6 is then covered with the soil.

Although the disc-shaped body of the present invention can be used alone as described above, it can be effectively used in the following applications in combination with other materials.

As shown in FIG. 6, reinforcing plates 8 made of rigid plastic net, metal mesh, etc. are applied to both sides of the disc-shaped body of the present invention, and the whole is made of a water-permeable material made of synthetic fiber non-woven fabric, woven fabric, etc. If it is covered with a filter material 9 and used as a surface drainage material, it has high pressure resistance and good internal water permeability, so it is extremely effective as a surface drainage material for backfilling tunnels and retaining walls, and under high embankments. do not have.

In this application, it is also possible to form one side with a water-impermeable sheet and the other side with a filter material.

When performing deep layer improvement on soft ground, in order to maintain the running performance of working machines and to drain water well from the ground, a strong sheet-like material is laid on the ground to distribute the load, and mixed with sand and mud. A commonly used method is to layer high-quality sand on top of the sand to avoid this. However, good quality sand is difficult to obtain and expensive, and there is a demand for materials that can replace sand in order to save resources.

As shown in FIG. 7, a sheet-like material 10 is laid on soft ground, the plate-like body A of the present invention is spread on it, a reinforcing plate 8 made of plastic net, etc., and a water-permeable filter material. Lay 9. With this configuration, a strong embankment base is formed on the soft ground by the sheet-like material and the plate-like material, and the running performance of the working machine can be ensured.
A planar drainage channel can be formed. In this case, ordinary soil can be used for embankment, and high-quality sand can be omitted. The water in the embankment 11 passes through the filter material and falls into the planar drainage channel formed by the plate-shaped body, and is drained out of the ground together with the consolidated water that has risen from within the ground.

[Brief explanation of the drawing]

FIGS. 1 to 3 are perspective views showing embodiments of the plate-like body, and FIGS. 4 to 7 are side sectional views showing the application situation thereof. A... Disc-shaped body, 1... Short cylindrical body, 2... Metal ring,
3... Opening, 4... Wire, 5... Washer, 6... Net-like material, 7... Gravel, 8... Reinforcement plate, 9... Filter material, 10... Sheet-like material,
11... Embankment.

Claims (1)

[Claims] 1. Two or more short cylinders that are rigid, have water holes on their surfaces, and have approximately the same length are arranged in parallel in a plane, with a margin so that the adjacent short cylinders can move relative to each other. A plate-shaped body that is connected with each other. 2. The plate-like body according to claim 1, wherein the plate-like body has a water-permeable or water-permeable sheet-like material attached to at least one side.