JPH0241608B2 - - Google Patents

Description

[Detailed description of the invention] The present invention involves driving a hole pipe pile having a through hole in constructing a slope frame constructed for slope protection, and pouring concrete, etc. into the hole pipe pile at the same time as formwork material. This is related to the injection anchor method in slope construction.

(Prior Art) Currently, various types of slope frame materials are used to protect slopes, and steel rod-shaped anchors are often used to secure them on slopes. This anchor is driven into the intersection of the law frame materials and has the role of supporting the weight of the law frame materials and filler soil. The problem arises that it separates from the base and collapses.
In addition, in the case of hard ground, it is difficult to drive anchors, so the construction is often done by drilling holes and inserting anchors, but in the case of embankments, driving is easy. , it is simply a drive-in type. However, in any of these cases, the adhesion between the anchor and the ground is poor, resulting in extremely low pull-out resistance, and there is a problem in that the anchor is pulled out by the slightest external force, such as a frost column, and loses its supporting force.

As a result of various studies on new methods of constructing anchors that can solve the problems of these conventional anchors used in slope frames, the inventor of the present invention has discovered that a formwork material with a hollow rectangular end face shape having a certain length is placed on a slope surface. When assembling and installing, we came to the conclusion that the above drawbacks could be solved by driving a hole pipe pile with a through hole and pouring concrete, etc. into the hole pile at the same time as the formwork material.
We have arrived at the present invention.

(Configuration of the present invention) The configuration of the present invention will be explained below based on the drawings.

FIG. 1 is a perspective view of a formwork material used in the present invention. FIG. 2 is a perspective view showing one embodiment of a joint used in the present invention. FIG. 3 is a partial perspective view showing the construction status of the present invention. FIG. 4 is a cross-sectional view of the construction of the present invention.

First, to explain the formwork material used in the present invention, it is desirable to use high-density polyethylene because the material is lightweight and has excellent strength.

As shown in FIG. 1, the formwork material 1 has a hollow rectangular end face shape.

The joints used in assembling the formwork materials described above have the shapes of a cross, a K-shape, a T-shape, an L-shape, and an E-shape.

As an example, a cross joint is explained. As shown in Fig. 2, it has a shape in which U-shaped end faces with a depth that allows the formwork material to fit are overlapped in a cross direction so that they can communicate with each other. A bolt 3 for fixing the hole pipe pile insertion part 8 and the tightening fitting 5 is provided.

Next, we will explain the third method of assembling the frame using the above-mentioned formwork materials, joints, and fastening fittings.
This will be explained based on FIG.

When assembling the slope material 1, which has a hollow rectangular end face shape and has a fixed length on the slope surface 30, from the bottom of the slope surface while inserting it into the joint 2, a hole having a through hole 7 is inserted through a hole provided in the bottom surface of the joint. Pipe pile 6
After driving and fixing the pile so that the head of the pile remains inside the joint, the opening of the joint is tightened and sealed and fixed using the bolt 3 and nut 2 with the metal fitting 5, and the legal frame material is assembled.

Once the assembly is complete, concrete or other fluid is poured into the upper part of the formwork. The poured concrete and other fluids flow down the inside of the legal frame material, filling it from the lower part, and then flowing through the head opening of the hole pipe pile having a through hole and filling the inside. The through holes in the pile serve to remove air from inside when concrete fluids flow in, and the mortar milk, which is mainly contained in the concrete that has leached through the through holes, fills the soil gaps around the hole pipe pile by injection pressure. will be done.

(Effects of the present invention) As described above, the present invention provides a hole tube having a through hole when assembling and installing a hollow rectangular formwork molded from synthetic resin or the like and having a fixed length on a slope. Drive the pile through the hole provided on the bottom of the joint so that the head of the pile remains inside the joint, seal and fix the opening of the joint with a tightening fitting, and then pour concrete from appropriate places on the top of the formwork material. This is an injection anchor method for construction work in which concrete is injected into the hole pipe pile along with the formwork material, making it ideal for work at high places or on steeply sloped surfaces. , the ground, the anchors, and the legal framework can all be integrated into a heavy and strong structure.

The injection anchor construction method in the slope construction constructed according to the present invention has a structure in which the anchor and the slope are integrated, so that the slope material does not separate from the anchor and collapse. Furthermore, mortar milk, which is mainly contained in the concrete that has leached from the perforations of the hole pipe pile, is filled into the soil gaps around the hole pipe pile by injection pressure, and the pull-out resistance of the anchor is dramatically improved, resulting in frost pillars etc. The anchor no longer loses its supporting capacity due to being pulled out by external force.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a formwork material used in the present invention. FIG. 2 is a perspective view showing one embodiment of a joint used in the present invention. FIG. 3 is a partial perspective view showing the construction status of the present invention. FIG. 4 is a cross-sectional view of the construction of the present invention. In the figure, 30 is a slope, 1 is a formwork material, 2 is a joint, 3 is a bolt, 4 is a nut, 5 is a tightening fitting, 6 is a hole pipe pile with a through hole, 7 is a hole in the hole pipe pile, 8 is the hole pipe pile insertion part.

Claims (1)

[Claims] 1. When assembling and installing a hollow rectangular formwork molded from synthetic resin or the like with a certain length on a slope, a hole pipe pile with a through hole is passed through a hole provided at the bottom of the joint. After driving the pile so that the head remains inside the joint, and sealing and fixing the opening of the joint with a tightening metal fitting, concrete or other fluid is injected from the upper part of the formwork material, and the hole is closed together with the formwork material. An injection anchor construction method for legal framework construction, which is characterized by pouring concrete, etc. into pipe piles.