JPH01131727A - Slope protection - Google Patents

Abstract

PURPOSE:To improve work efficiency and reduce construction cost for slope protection by a method wherein concrete or the like is placed over molds made of light-weight, strong fiber mesh with longitudinal reinforcement and placed over natural ground of slope. CONSTITUTION:A number of thin, light-weight, strong fiber impregnated with anti-corrosive resin are intersected each other to integrate mesh-type plates 1, and protruding lines 3 are provided to form grids. Longitudinal reinforcement 2 made of thick lines members are placed on the protruded lines along the stretcher direction. Finally, the mesh-type plate 1 and the longitudinal reinforcement 2 are integrated to for mesh-type slope protection molds A. After placing the molds on the natural ground of slope, concrete or the like can be placed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a slope protection method implemented to protect a sloped ground.

(Prior art) Conventionally, as a method for reinforcing sloped ground such as a slope,
Efforts include constructing concrete legal frameworks on the ground and spraying mortar over the entire slope.

(Problems to be solved by the present invention) However, the method of constructing a concrete legal framework requires the installation of reinforcing bars and temporary construction of formwork, and since these materials are made of steel, they are heavy. However, it has the disadvantage that construction is difficult and inefficient, especially on slopes where workability is poor.
Because the preparation materials are buried in the framework, there may be damage due to insufficient concrete cover or cracks in the concrete, natural influences such as rainwater, and man-made environmental influences such as exhaust gas. There is a problem in that the steel materials corrode and expand, leading to deterioration of the legal framework and making it impossible to achieve its original purpose.

In addition, with the method of spraying mortar, the strength of the mortar is weak, so it is not effective in completely suppressing the slope, and
The problem is that the slope and the sprayed surface become separated from each other, requiring frequent repairs.

The present invention improves the drawbacks of the prior art as described above, and
We would like to provide a new slope protection method that allows concrete slope structures to be constructed on the ground through simple concrete pouring work without using heavy materials such as reinforcing bars or formwork. That is.

(Means for Solving the Problems) The structure of the present invention will be explained with reference to the drawings corresponding to the embodiments. Then, on the net-like plate l formed by intersecting each thin wire material and integrally forming the same, raised strips 3.3 are formed in a lattice pattern, and on the upper part of each raised strip 3,
Along the long plane direction, the shaft reinforcement 2 made of the thick wire material is arranged, and the shaft reinforcement 2 and the mesh board l are integrated to form the mesh slope frame board A. The method is characterized in that it is laid on the ground, concrete B is poured on top of it, and the mesh method frame board A is buried in the concrete B.

(Example) Hereinafter, an example of the construction method of the present invention will be described with reference to the drawings.

In the present invention, a net-like slope frame board A as shown in FIG. 2 is used as a construction material on the slope surface.

This net-like frame plate A includes a net-like plate l formed by intersecting thin wire members, and an axial reinforcement 2.2 made of a thick linear plate integrally formed therewith. The wire members forming the mesh plate 1 and the shaft reinforcement 2 are formed by molding and curing a fiber bundle made of lightweight, high-strength fibers impregnated with a highly corrosion-resistant resin material.

The aforementioned fibers are preferably glass fibers, carbon fibers, etc., but other materials such as synthetic resin fibers, ceramic fibers, or a suitable combination of these fibers can also be used.

In addition, as the resin material for binding the fibers, it is preferable to use vinyl ester resin, which has good adhesion to the fibers and has sufficient strength by itself, for example, unsaturated polyester resin, epoxy resin, phenol resin, etc. Examples include resin.

Note that the linear material is not limited to the above-mentioned material formed by impregnating fibers with a resin, but may also be formed only from a synthetic resin material.

Therefore, raised strips 3, 3 of a required height are formed in a lattice pattern on the mesh plate (2) of the mesh frame board A, and on the upper part thereof, along the longitudinal direction of the raised strips 3, that is, along the top edge. Axial reinforcements 2 made of thick wire materials run longitudinally, and the shaft reinforcements 2 and the thin wire materials forming the mesh plate 1 intersect and integrate with each other, and furthermore, the crossed shaft reinforcements 2. They are integrated at intersections.

Therefore, the mesh-like frame board A has raised strips 3 having shaft bars 2°2 at the top edges formed in a lattice shape, and surrounded by the raised strips 3 is a reticular plate portion recessed lower than the shaft bars 2. 1a and Ia are respectively formed.

The mesh frame board A having the above configuration is manufactured in a factory,
It is delivered to the site and laid on the slope.

Fixing to the slope ground is carried out, for example, by connecting the intersection of the shaft reinforcements 2, 2 or other suitable locations with anchors (not shown) cast into the ground.

After installing the mesh method frame board A on the slope, concrete type B such as concrete, mortar, or porous concrete is poured (including spraying) on top of it, and the mesh method frame board A is replaced with concrete type B. bury it inside. As a result, a covering layer 4 of concrete B is formed on the slope, and a raised concrete slope frame 5 is formed in a lattice shape along the shape of the raised strips 3.3.

In this case, as shown in FIG. 3, the concrete type B can be placed on the raised strips 3 to form only the concrete slope 5.

Further, although the raised strip 3 has a triangular cross section in the above embodiment, it may have a rectangular cross section as shown in FIG. good.

In the above example, the reticulated frame board A is formed to have a wide area, but due to the circumstances of production and transportation, it is necessary to manufacture a set of standard size boards and join them together on site. It turns out. Therefore, in the present invention, as shown in FIG. 5, the mesh frame plate A' is formed into one frame plate unit,
It is convenient for production and transportation if a large number of unit frame plates A° are installed continuously on site.

(Effects of the Invention) As explained above, the construction method of the present invention impregnates lightweight and high-strength fibers with a highly corrosion-resistant resin material, and integrally forms thin wires by intersecting each other. On the reticular plate made of
The raised stripes are formed in a grid pattern, and at the top of each raised strip,
Arranging an axial reinforcement made of the thick wire material along the long plane direction, and integrating the axial reinforcement and the mesh plate to form a mesh frame board,
This mesh method frame board was laid on the slope ground, concrete was poured on top of it, and the mesh method frame board was buried in the concrete. With the extremely simple process of pouring concrete from above, a legal frame structure or a protective layer can be constructed in addition to it, without the need for temporary formwork as in the past. Since the shaft reinforcements are buried, the shaft reinforcements are integrally cross-connected to each other, and the shaft reinforcements are integrally connected to the mesh plate, the slope frames are interconnected and a strong slope structure is constructed. can.

Therefore, construction efficiency and economical efficiency are significantly improved compared to conventional construction methods.

In addition, the formwork that is buried and also used for reinforcing is corrosion resistant, so there is almost no need to use steel materials.
There is no fear that the buried material will corrode due to natural influences such as rainwater or man-made influences such as exhaust gas, leading to deterioration of the structure, and the structure can be stabilized for a long time. When concrete is placed only on the raised stripes or when porous concrete is placed, many excellent effects can be achieved, such as the ability to create vegetation and greening.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing one embodiment of the construction method of the present invention, Fig. 2 is a slope view showing an embodiment of the mesh frame board used in the method, and Fig. 3 is another embodiment of the construction method of the present invention. FIG. 4 is a vertical cross-sectional view showing another example of the raised strip portion of the mesh-like frame board, and FIG. 5 is a perspective view showing another example of the mesh-like frame board. A...Mesh frame board B...Concrete type I...
・Mesh plate 2... Axial muscle 3... Raised strip 4...
Concrete coating layer 5...Conocrete frame patent applicant Shimizu Corporation Figure 1: $2 Figure -

Claims (1)

[Claims] Lightweight, high-strength fibers are impregnated with a highly corrosion-resistant resin material, and the thin wires are integrally formed by intersecting each other to form a mesh board, and raised strips are formed in a lattice pattern. An axial reinforcement made of the thick wire material is arranged on the upper part of each raised strip along its longitudinal direction, and the axial reinforcement and the mesh board are integrated to form a mesh framework board. A slope protection construction method characterized by laying on the slope ground, pouring concrete on top of it, and burying the mesh frame board in the concrete.