JPH0678633B2 - Construction method of slope protection structure and block used for it - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing slope collapse, and more particularly to a method for constructing a slope protection structure constructed using ready-made blocks and a block used for the structure.

[0002]

2. Description of the Related Art In order to protect the slope, a method of arranging ready-made concrete blocks on the ground and pressing the ground by this has been developed.

[0003]

Problems to be solved when the slope is protected by such blocks are that each block is independent and that it is not in close contact with the ground. . That is, the blocks are independent one by one, and even if a plurality of blocks are arranged on the ground, each block receives a force to lift the ground separately. In other words, when a part of the slope collapses, only the block placed on it will try to suppress this collapse, and the block next to it will function to prevent this collapse. do not do. For this reason, it is adopted to combine the ends of adjacent blocks by combining them, for example, to integrate them, but good integration has not been achieved by simply combining ready-made blocks.

Since the lock is a ready-made product and is not manufactured along the surface of the natural ground, when it is placed on the natural ground, a portion which does not follow the natural ground is inevitably formed. The block is in close contact with the ground surface and presses the ground surface satisfactorily, and a gap between the block and the ground surface means that the block is not pressing that portion.

The present invention has been made in order to solve the above problems, and when an off-the-shelf block is used, adjacent blocks are integrated and closely adhere to the ground surface to protect the slope. It is an object of the present invention to provide a method of constructing a slope protection structure and a block used for it.

[0006]

The method for constructing a slope protection structure according to the present invention is to use a ready-made block to form a structure in which the blocks are integrated. The block has a substantially cross shape with a central portion and legs extending in four directions from the central portion. At least one of the four legs has a hardening material filling hole that is open at the tip and the lower surface. By arranging such blocks on the ground, the tips of adjacent blocks are abutted against each other to make the hardening material filling holes continuous. A hardening material such as concrete is filled into the hardening material filling hole to integrate the adjacent blocks and to bring them into close contact with the ground surface. Reinforcing bars may be continuously arranged in the hardening material filling holes.

The slope protection blocks may be arranged such that the ends of the legs are faced to each other and the slope protection blocks are arranged at predetermined intervals. In this case, a mold is assembled between the tips of the legs, and the hardening material is filled in the hardening material filling holes of the adjacent blocks and the molding material between them to be integrated. As this mold, a waste mold made of precast concrete may be used, or a mold made of a mesh dam plate may be used.

The slope protection block according to the present invention comprises:
Although having the above-mentioned configuration, the hardening material filling holes may be provided in two of the four leg portions extending in opposite directions, or the hardening material filling holes may be provided in all the leg portions.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on an embodiment shown in the drawings. In the figure, 1 is a ready-made concrete block for slope protection, which has a substantially cross-shaped shape including a central portion 2 and leg portions 3 extending in four directions from the central portion 2. An anchor insertion hole 4 is formed at the center of the central portion 2 so as to penetrate vertically. Each leg 3 is formed with a hardening material filling hole 5 that opens at the tip of the leg 3 and the upper and lower surfaces thereof. Therefore, the hardening material filling hole 5 is formed from the tip to the central portion 2.
Each leg 3 has a shape like a tuning fork extending from the center 2 in a bifurcated manner. The opening on the lower surface of the leg portion 3 is wider than the opening on the upper surface. This is to increase the contact area between the hardening material 6 and the ground surface when the hardening material 6 is filled in the filling hole 5.

The slope protection blocks 1 as described above are arranged vertically and horizontally so that the tips of the legs 3 are in contact with each other and are arranged on the ground surface. The leg 3 of each block 1 has a hardening material filling hole 5 opened at the tip thereof, and when the legs 3 and 3 are butted, the hardening material filling holes 5 and 5 on the inner side are also continuous.
In the anchor insertion hole 4 in the central portion of the block 2, a protruding portion from the ground surface of the anchor 7 that has been driven in advance is passed through, and a prestressing force is applied to fix the block 1. This prestressing force presses the block 1 against the ground surface to hold down the slope.

Reinforcing bars (not shown) are continuously arranged in the hardening material filling holes 5 formed continuously in the adjacent blocks 1 as described above. Then, a hardening material 6 such as concrete or mortar is filled in the hardening material filling holes 5. The hardening material 6 is hardened in the adjacent blocks 1.1 to integrate the blocks 1.1. Moreover, since the hardening material 6 that has flowed under the leg portion 3 is hardened in the form of being in close contact with the ground surface,
The ground can be suppressed well. As described above, the curable material 6 is placed inside the blocks 1 and 1 arranged on the slope to form a slope protection structure that is wholly integrated.

In the above embodiment, the block 1 having the hardening material filling holes 5 in all the legs 3 is used, but the hardening material filling holes 5 are used.
Need only have at least one leg portion 3. For example, it may be formed on the two leg portions 3 and 3 in opposite directions to form a slope protection structure that is continuous only vertically or horizontally.

FIG. 3 shows another construction method, in which the blocks 1 are arranged in the ground with the tips of the legs 3, 3 facing each other and with a predetermined gap between the tips. Is. A discarding mold 8 made of a precast concrete dam plate is hung between the tips of the adjacent legs 3 and 3. The hardening material 6 is filled in the hardening material filling holes 5 of the left and right blocks 1.1 and the mold 8 between them. With such construction, the arrangement of the blocks 1 can be freely adjusted according to the construction conditions at the site. It is also possible to use a net-like dam plate as the mold 8 to form a discarded mold. Of course, it is also possible to use a versatile form such as wood.

[0014]

EFFECTS OF THE INVENTION The present invention has the above-mentioned structure, and blocks having a hardening material filling hole opening at the tip and a lower surface of a leg are arranged in the ground, and the hardening material is filled in adjacent hardening material filling holes. By filling in, a slope protection structure in which adjacent blocks are integrated is formed. Therefore, when a part of the slope is about to rise, adjacent blocks try to hold it together, resulting in a highly stable slope protection structure.
Further, the hardening material flowing from the hardening material filling hole opened on the lower surface of the leg portion adheres to the ground surface, and the ground surface can be satisfactorily pressed. By arranging the legs of the block apart from each other, and by assembling a mold between them to fill the hardening material with the hardening material filling hole and hardening material into the molding, the arrangement of the blocks according to the construction conditions at the site, You can freely decide the number. This makes it possible to carry out economical construction in accordance with construction conditions. By arranging the reinforcing bars continuously, the connection between the blocks becomes strong.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a slope protection block according to the present invention.

FIG. 2 is a perspective view of an embodiment of a slope protection structure according to the present invention.

FIG. 3 is a perspective view of another construction state.

[Explanation of symbols]

 1 Slope protection block 2 Center part 3 Leg part 4 Anchor insertion hole 5 Hardener filling hole 6 Hardener 7 Anchor 8 Formwork

Claims (7)

[Claims] 1. A block which is substantially cross-shaped and has a center portion and legs extending in all directions from the center portion and having a hardening material filling hole opened at the tip and the lower surface is arranged side by side in the ground and adjacent to each other. The method is characterized in that the ends of the legs of the are abutted to each other to make a hardening material filling hole continuous, the hardening material is filled in the hardening material filling hole, and adjacent blocks are integrated to form a slope protection structure. Construction method of surface protection structure. 2. A block having a cross shape formed by a central portion and a leg portion which extends in all directions from the central portion and has a hardening material filling hole opened on the lower surface and a lower surface of the block is directed toward the tip portions of the leg portions. In addition, line up in the ground at intervals, form a mold between the legs of the adjacent blocks, fill the hardening material filling holes in the adjacent blocks and the hardening material in the space between them, and place them next to each other. A method for constructing a slope protection structure, characterized by integrating blocks to form a slope protection structure. 3. The method for constructing a slope protection structure according to claim 2, wherein a precast concrete formwork is used as a formwork to be assembled between the legs of adjacent blocks. 4. The method for constructing a slope protection structure according to claim 2, wherein a form made of a mesh dam is used as a form assembled between the legs of adjacent blocks. 5. The sloped surface according to claim 1 or 2, wherein reinforcing bars are continuously arranged from the hardening material filling holes of adjacent blocks to the hardening material filling holes, and then the hardening material is filled. How to construct a protective structure. 6. A hardening material filling hole having a center portion and leg portions extending in four directions from the center portion to form a substantially cross shape, and at least one leg portion of the leg portions is open at a tip and a lower surface. A slope protection block characterized by having. 7. The slope protection block according to claim 3, wherein the legs extending in all directions have hardening material filling holes.