JPH0124199Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a slope reinforcing frame embedded to prevent slope collapse.

As shown in Figure 1, when there is a slope B on the side of the road surface A, in order to prevent the slope B from collapsing, a reinforcing frame 1 is embedded in the ground G of the slope B. Depending on the situation, plants P such as grass may be planted between the reinforcing frames 1 to make them greener.

Conventionally, this type of reinforcing frame consists of a concrete frame produced in a factory, which is transported to the site and embedded in the ground in the form of, for example, a grid. However, concrete reinforcing frames are not only heavy and inconvenient to handle, but also expensive to transport.
Because it has no flexibility, it is difficult to install the reinforcing frame along the slope if the slope is uneven and wavy, or if there are obstacles such as rocks in the ground. However, it was difficult to route around these obstacles. Therefore, conventionally, in the above case, the inconvenient and uneconomical method of leveling the slope through large-scale land preparation work and then laying the reinforcing frame has been unavoidably adopted.

This idea was made in view of the above circumstances.
Regardless of the unevenness of the slope or the presence of obstacles in the ground, it can be buried well along the slope without the need for large-scale preparation work, and
The purpose of the present invention is to provide a reinforcing frame whose strength can be easily improved by pouring concrete on-site.

Hereinafter, the present invention will be explained according to the illustrated embodiments.

As illustrated in FIG. 2, the reinforcing frame 1 is
A perforated metal plate 4 is provided in an opening 3 opened along the axis in the pipe wall of a synthetic resin pipe 2 having flexibility such as polyethylene or polypropylene, and the inner surface of this perforated metal plate 4 is made water permeable. A sheet material 5 made of cloth or the like is disposed. In the illustrated example, the opening 3
is formed over the entire length of the synthetic resin pipe 2. Further, as shown in FIG. 3, the perforated metal plate 4 is made of, for example, an expanded metal pressed into a flat plate shape, and both ends of the perforated metal plate 4 are embedded in the opening edge 3a of the synthetic resin pipe 2. . Perforated metal plate 4
As will be described later, the purpose of the perforated metal plate 4 is to support the weight of concrete when it is poured into the reinforcing frame 1. Therefore, in addition to the above-mentioned metal plates, laths may be used as the perforated metal plate 4. A wire mesh or the like can be used, and the material may be iron, aluminum or other rigid perforated plate. Next, since the sheet material 5 acts as a screen for discharging excess moisture in the concrete cast into the reinforcing frame 1 outside the frame, it is necessary to have water permeability. It is possible to use woven fabrics such as , nonwoven fabrics made of other organic fibers or inorganic fibers, and the like. The sheet material 5 is disposed in close contact with the inner surface of the perforated metal plate 4, and both ends thereof are connected to the opening edge 3 of the synthetic resin pipe 2, as shown in FIG.
a It is fixed to the inner surface using methods such as heat fusion or anchoring. In addition, the inner surface of the metal plate 4 and the synthetic resin pipe 2
Needless to say, it may be bonded to the inner surface of the opening edge 3a using an adhesive.

Note that the width (opening width) L of the opening 3 of the synthetic resin pipe 2 shown in FIG. 2 is 10% of the peripheral wall of the synthetic resin pipe 2 when the opening 3 is formed over the entire pipe length.
For example, when D=100φ, L should be about 30 mm. This is a result of considering the strength, flexibility, etc. of the synthetic resin pipe 2 itself.

The reinforcing frame 1 described above is lighter than conventional concrete frames, so it can be easily transported to the site. At the site, it is embedded in the ground, and as shown in Figure 4, it is framed in a triangular lattice shape with the opening 3 facing down using the necessary joints (not shown) and placed on the slope B. laid down. In this case, as shown in Figure 5a, when the slope B is undulating in an uneven manner, the flexibility of the slope B can be used to meander along the uneven surface and buried in the ground. When there is an obstacle 6 such as a rock in the ground G as shown in FIG.

In this way, the reinforcing frame 1 embedded in the ground G has
As shown in Fig. 6, concrete 7 is poured, but the excess moisture in the cast concrete 7 is absorbed by the water-permeable sheet material 5 and the perforated metal plate 4, as shown by the arrow W in the figure. Since the concrete 7 is discharged into the ground G through the through hole 4a (see Fig. 3), it hardens within the reinforcing frame 1, and as shown in Fig. 7, the concrete 7 hardens within the reinforcing frame 1.
Functions as a reinforcing core. Therefore, even if the reinforcing frame 1 is flexible and does not have great strength, the concrete 7 that has hardened into a columnar shape inside the frame 1 is flexible.
The slope B as a whole has sufficient strength to prevent collapse. In addition, even if the reinforcing frame 1 weathers over time, its reinforcement core, the concrete 7, maintains its great strength, so the reinforcing effect of the slope B does not decrease, and the appearance The decrease in the slope B is not a problem because the lawn etc. planted on the slope B covers the outer periphery of the concrete 7 and makes it invisible.

As detailed above, the reinforcing frame of the present invention can be easily deformed into a meandering shape by utilizing the flexibility of the synthetic resin pipe, so it can be easily deformed into a meandering shape, so it can be easily deformed into a meandering shape. However, it can be embedded well into the ground without carrying out large-scale preparation work on the slope, and even if the strength of concrete itself is small, by pouring concrete on site and hardening it, the entire structure can be improved. As a result, it has sufficient strength for slope reinforcement, so its reinforcement effect on slopes in actual use is comparable to that of conventional concrete. In particular, the reinforcing frame of the present invention does not simply consist of a part of the tube wall made of synthetic resin, etc., arranged in a net shape along the axis line, but rather a perforated metal plate is formed in the opening along the axis line provided in the tube wall. By providing such openings, the excess water from the concrete poured into the reinforcement frame is drained, so that the weakening of the pipe wall due to the openings is prevented by the reinforcing action of the perforated metal plate. At the same time, the perforated metal plate exhibits a supporting force sufficient to withstand the weight of the concrete, and has the advantage that deformation such as bulging of the pipe wall due to the weight of the concrete is less likely to occur. Moreover, since it is lightweight, it is easy to handle and has the advantage of being inexpensive to transport.

[Brief explanation of drawings]

Fig. 1 is an external view of the reinforcing frame embedded in the slope, Fig. 2 is a perspective view of the reinforcing frame according to the embodiment of the present invention, Fig. 3 is a sectional view taken along line X-X in Fig. 2, Figure 4 is an explanatory front view of the embedded state, Figure 5a is a vertical sectional view for the same explanation, Figure b is a horizontal sectional view for the same explanation, Figure 6 is an enlarged sectional view of the main part at the initial stage of concrete pouring, FIG. 7 is an enlarged perspective view of the main part with a part cut away after the embedding is completed. 1... Reinforcement frame, 2... Synthetic resin pipe, 3... Opening, 4... Effective metal plate, 5... Sheet material, B...
Law surface.

Claims (1)

[Scope of utility model registration request] A slope formed by providing a perforated metal plate in the opening along the axis of a pipe wall made of flexible synthetic resin, etc., and arranging a water-permeable sheet material on the inner surface of this perforated metal plate. Reinforcement frame.