JPS6022097Y2 - 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 railway road decks and vehicle road decks cannot sufficiently withstand the vertical shearing force and lateral drag force caused by the load, resulting in landslides or landslides in slope areas. Potholes may occur 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 resist the tensile or shearing force caused by the load.

In addition, the shear strength and tensile strength of the embankment mentioned above are weakened by the water content of the permeability of rainwater, so paper drains and drainage pipes are buried in the embankment, and one end of these paper drains and water pipes is connected to the slope of the embankment. It protrudes outside to drain rain and flood water.

However, in the buried body used for the above-mentioned 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,
Another disadvantage is that water tends to accumulate in the corners of the mesh, which destroys the close relationship between the embankment and the mesh, weakening the tensile strength and shear resistance of the mesh, and causing slope collapse and subgrade subsidence. .

The present invention has been made in view of the above-mentioned drawbacks, and one of the threads of the mesh body 1 is made into a protrusion, thereby creating a tube in the orthogonal cavity formed at the position where the warp threads 11 and the weft threads 12 intersect at right angles. It has an extremely high drainage effect that has never been seen before, and also has an excellent structure as a reinforced buried structure for earth structures. The purpose is to effectively carry out the following at once.

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

Figure 1 is an enlarged view of the net used in the present invention, Figure 2 is
FIG. 1 is a sectional view taken along the line I-I, and FIG. 3 is a sectional view of an embankment structure using the buried structure of the present invention.

In the present invention, the warp threads 11 and the weft threads 12 of the net body 1 made of synthetic resin or metal are orthogonal to each other, and one of these threads is made into a protrusion, and the protrusion is connected to the other thread. This is a reinforced buried earth structure in which a cylindrical suction/drainage material 2 is attached and integrated within the right-angled cavity formed by the two threads.

In FIG. 1, the net 1 is made of synthetic resin, and the net 1 has a rectangular mesh of warp and weft threads 11...12... on the same plane, and weft threads 12... A protrusion is formed.

A cylindrical suction/drainage material 2 is attached in a right-angled cavity formed by warp threads 11 and warp threads 12.

In the figure, this attachment is done by tying appropriate points with a string H to prevent it from coming off, but it goes without saying that it can also be attached integrally by welding, gluing, etc.

Further, the cylindrical suction/drainage material 2 may be attached to each yarn, or may be attached to the yarn at appropriate intervals, as appropriate.

The cylindrical water absorption and drainage material 2 is made of chemical fiber, natural fiber, or inorganic fiber, and is made into a cylindrical material that has water absorption and drainage ability by winding a sheet-like material that has a spongy shape as a whole. It is.

In addition, there are other suction and drainage materials, such as a mesh pipe and a pipe with a slit in the upper part of the same material as the above-mentioned cylindrical suction and drainage material 2, which are inserted into the rectangular cavity formed by the warp and weft threads. It shall be integrated into the construction.

To describe one method of using the buried object of the present invention, which is effective with the above-described configuration, for example, as shown in FIG. The buried bodies of the present invention are buried one after another, and one end of the cylindrical suction/drainage material 2 is respectively protruded outside the slope.

Further, in the soft ground zone N, the buried body of the present invention is buried so that the cylindrical suction and drainage material 2 protrudes into the drain grooves 3, 3 provided at both ends of the lower end of the embankment.

The above-mentioned present invention has a cylindrical suction/drainage material 2 along the threads of the net body 1.
Since they are attached integrally, they tend to adhere to and accumulate on the respective openings (i.e., part of the corners of the mesh) and the surface area of the threads of the warp threads 11..., weft threads 12... of the net body 1. Rainwater is sucked into the cylindrical water absorption and drainage material 2 with water absorption capacity and drained out of the slope, so that the intimate buried relationship between the net 1 and the embankment M is not lost due to rain or flooding. Therefore, the shearing resistance force and the trailing resistance force of the net 1 are not weakened, so that the risk of failure of the slope of the embankment, collapse of the embankment road surface, etc. is significantly reduced.

Furthermore, in the buried body of the present invention, the cylindrical suction and drainage material 2 is attached along the threads of the net body 1, so there is no risk of blocking the embankment unlike when a paper drain is buried.

Furthermore, since the mesh body 1 and the cylindrical suction/drainage material 2 are integrated in advance, construction work is simplified, and the present invention has excellent effects as a reinforced buried body for earth structures and in construction work. be.

Furthermore, in the mesh body of the buried body of the present invention, one of the warp threads and weft threads that are perpendicular to each other is formed in a shape that projects above and below the other thread thread.
When embanking or burying in soft ground areas, the protruding threads become burial legs and are buried in the soil in a wedge-like manner, increasing the contact area with the soil, making the soil structure stronger. Also, when attaching and combining the cylindrical suction/drainage material, it is possible to stably attach the cylindrical suction/drainage material by fitting it into the orthogonal cavity of the warp and weft threads.

Moreover, the bending strength of the protruding filament is extremely strengthened in the direction in which it protrudes, and since the cylindrical suction/drainage material is attached and integrated along that direction, the cylindrical suction/drainage material is straight It has an extremely excellent effect in that it is laid in a concrete manner, allows good water flow, and enables drainage to be carried out much more efficiently than the conventional method of simply embedding a cylindrical suction/drainage material.

[Brief explanation of the drawing]

FIG. 1 is an enlarged view of the net body used in the present invention, FIG. 2 is a sectional view taken along the line II in FIG. 1, and FIG. 3 is a sectional view of an embankment structure using the buried body of the present invention. Explanation of symbols: 1... Net body, 2... Cylindrical suction/drainage material.

Claims (1)

[Scope of utility model registration request] The warp and weft threads of a net made of synthetic resin, metal, etc. are orthogonal, and one of these threads is made into a protrusion, and the protrusion is formed above and below the other thread. A reinforced buried earth structure in which a cylindrical suction and drainage material is integrated into the right-angled cavity formed by the above-mentioned two threads.