JPS6022098Y2 - Reinforced buried earth structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reinforced buried structure for embankment structures used in railway construction, roads, residential land development, etc.

Earth structures such as railways, roadbeds, roadbeds, etc. that have been embanked cannot sufficiently withstand the vertical shearing force and lateral drag force caused by the load, resulting in landslides in slope areas. Or, a cave-in occurs on the road surface.

Conventionally, synthetic resin or metal nets are buried in stages at appropriate intervals in the middle layer of an embankment structure to counteract the drag or shearing force caused by the load.

In addition, the shearing force and drag force mentioned above are weakened by the water content due to rainfall, water penetration, etc., so paper drains and drainage pipes are buried in the embankment, and one end of these paper drains and drainage pipes is placed outside the slope of the embankment. Efforts are being made to drain rainfall and flooding.

However, in the buried body used for the above soil structure, the net and drainage materials such as paper drains and drainage pipes are buried separately, so even if the drainage material is buried, the area around the net will be buried separately. Water tends to accumulate, that is, along the threads of the mesh,
In addition, since water tends to accumulate in the corners of the mesh, the close relationship between the embankment and the mesh is broken, which weakens the net's drag resistance and shear resistance, leading to slope collapse and subgrade subsidence. Ta.

Furthermore, as mentioned above, since the net and the drainage material are buried separately, there is a drawback that the arrangement of these during construction work is particularly laborious, and furthermore, transportation is frequent.

The present invention was developed in view of the above-mentioned drawbacks, and by integrating suction and drainage materials along the threads of the mesh, it is possible to effectively strengthen the soil structure and drain water at the same time. The purpose is to simplify work, transportation, etc.

The present invention will be described in detail below with reference to embodiment figures.

FIG. 1 is an enlarged view of a net showing an embodiment of the buried object of the present invention;
Figure 2 shows another embodiment, an enlarged view of the net with some sheets removed, Figure 3 is an explanatory diagram of another embodiment, and Figure 4 is an embankment structure using the buried body of the present invention. FIG.

The present invention is based on a synthetic resin net A in which warp threads 11a and weft threads 11b are integrally molded at their intersections in a certain direction.
In addition, the strips 2 are arranged integrally with the thread 1 of the net A at appropriate intervals, and a plurality of strips 3 are arranged along the longitudinal direction of each strip 2.・are fixed and integrally formed on the strip 2 at intervals, and furthermore, this strip 3...
The contents include a reinforced buried body of an earth structure whose upper surface is covered with a non-woven fabric, a net-like sheet or other water-permeable sheet 4 to form a drainage channel 5 between each strip 3. The strip 2 shown in FIG. 1 is wider than the thread 1, and the width of the strip 2 is about six times that of the warp thread 11a.

Therefore, this strip 2 can be understood as one in which the width of the warp thread 11a is simply expanded.

In the case of the rectangular mesh network body A as shown in FIG. 2, it goes without saying that similar strips 2 can be formed by simply closing the rectangular meshes.

Moreover, the strip 2 shown in FIG. 2 is the warp thread 11a itself and is not separately distinguished from the thread 1. If the thread 1 is flat as shown in the figure, it can be immediately used as the strip 2 of the present invention. I can do it.

If the yarn 1 is circular, it cannot be used immediately as the band 2, so it is necessary to prepare the circular yarn at appropriate intervals as flat yarn, that is, the band 2.

Both of the above two types of strips 2 are arranged in the same direction as the warp threads 11a, but as shown in the strip 2 shown in FIG. The strips 2 are arranged and fixed in the same direction and at appropriate intervals regardless of the direction of the strips 2.
It is also outside the scope of the present invention to form a drainage channel by arranging strips as above and integrally covering the upper end surfaces of the strips with nonwoven fabric, net-like sheets, or other water-permeable sheets. It's not a thing.

To describe one method of using the buried object of the present invention which is effective with the above-mentioned configuration, for example, as shown in FIG. Bury it and expose the drainage channel 5 on the slope side.

Further, in the soft ground zone N, the drainage channels 5 of the mesh body A are exposed and buried in the drainage ditches H provided at both ends of the lower end of the embankment.

In the buried body of the present invention as described above, the strips 2 are formed in a certain direction on the net body A at appropriate intervals, and the strips 3 are arranged on the strips 2. Piece 3: A drainage channel 5 formed by a nonwoven fabric, a net-like sheet, or other water-permeable sheet 4 integrally covered with the mesh body A is formed integrally with the mesh body A. Because of this, rainwater that tends to accumulate near the threads of the mesh body A flows into the drainage channels 5 through the water-absorbing nonwoven fabric, net-like sheet, and other water-permeable sheets 4, and the drainage channels 5...・Drainage is drained further out of the slope, so the intimate relationship between net A and embankment M is not lost due to rainfall or water penetration, and therefore the shearing resistance and drag resistance due to net A is weakened. Since there is no risk of damage to the slope of the embankment or collapse of the exposed surface of the embankment, the risk of damage to the slope of the embankment or collapse of the exposed embankment is greatly reduced.

Furthermore, since the drainage channel 5 and the mesh body A are integrally formed, the burying work is very easy and transportation is also convenient.The present invention can be used as a reinforced buried body for earth structures. Another idea is that it is easy to bury.

It goes without saying that the present invention can also be applied to nets made of meshes other than those made by accident.

[Brief explanation of the drawing]

FIG. 1 is an enlarged view of a net showing an embodiment of the buried object of the present invention;
Figure 2 shows another embodiment, an enlarged view of the net with some sheets removed, Figure 3 is an explanatory diagram of another embodiment, and Figure 4 is an embankment structure using the buried body of the present invention. FIG. Explanation of symbols: 1... Thread, 2... Band-like, 3... Strip, 4... Non-woven fabric, net-like sheet, etc. water permeable sheet, 5...drainage channel, A...net body.

Claims (1)

[Scope of utility model registration request] Strips 2 are formed in a certain direction of a synthetic resin net A in which warp threads 11a... and weft threads 11b... are integrally molded at intersections, and at appropriate intervals with respect to the threads 1 of the mesh body A. are arranged integrally with the net body A, and a plurality of strips 3 along the longitudinal direction of each strip 2 are fixed on the strip 2 at intervals, and furthermore, A soil structure in which the upper surface of the strips 3 is covered with a non-woven fabric, a net-like sheet or other water-permeable sheet 4 to form a drainage channel 5 between each strip 3. Reinforced buried objects.