JPH0513780Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention prevents the collapse of soil on slopes, and
This invention relates to a concrete block for a slope that can be used to green the slope with natural plants.

(Conventional technology) Precast concrete blocks are used to prevent the collapse of slopes, which are generally formed by excavating the ground when constructing roads and railways, and when creating land for housing on slopes. Many legal frameworks are used.

This type of conventional slope framework consists of prismatic or cross-shaped precast concrete blocks that are connected to each other in a grid pattern on site to cover the entire slope. A method of fixing the ground using underground anchors is being adopted.

This type of slope is economically advantageous for retaining walls on large slopes, and the ground can be exposed within the slope, making greening possible. A number of methods have been developed in which nets are stretched inside to hold soil containing seeds, or pine trees containing seeds are inserted into the framework.

However, in recent years, the construction of roads in mountainous areas has become more and more extensive, and it has become necessary to protect large areas of excavated slopes on steep slopes. For this reason, with conventional slope frames, the earth and sand wash away from the spaces within the slope, so it is necessary to cover the entire slope with plate-shaped precast blocks, or to fit concrete into the spaces within the slope. The retaining wall covers the entire slope by pouring cast-in-place concrete.

(Problem that the invention aims to solve) If the entire surface of such a conventional steep slope is covered with precast blocks or cast-in-place concrete, it will not be possible to create greenery, and a large area of the concrete retaining wall will be exposed, resulting in an extremely unsightly landscape. There was a problem with the loss of .

In view of these problems, the present invention aims to provide concrete blocks for legal frameworks that can economically protect steep slopes over large areas, and also allow greening with natural plants. be.

(Means for Solving the Problem) The concrete block for legal framework of the present invention, which solves the above-mentioned conventional problems and achieves the intended purpose, is characterized by a plurality of arms radiating from the center part. The block body has a protruding block body, and an annular wall integrally formed at the tip of each arm so as to surround the block body, and an underground anchor tension member is provided at the center of the block body. The anchor is provided with an anchor fixing part that penetrates and fixes the anchor.

(Function) When using this concrete block for a slope, connect each annular wall between adjacent ones, install a large number of blocks side by side on a slope, and attach the anchor anchor part of each block to the ground of the slope. It is fixed to the slope by inserting and fixing the tension wire of the underground anchor buried inside.

As a result, the slope is covered with a mesh-like structure with many small windows surrounded by the arms of the block body and the annular wall, and the soil on the steep slope is prevented from washing away. Prevented.

(Example) Next, an example of the present invention will be described with reference to the drawings.
In FIGS. 1 to 5, reference numeral 1 indicates a concrete block for a legal frame according to the present invention. This block 1
The block main body part 4 has four arm parts 3, 3, . A circular annular wall portion 5 arranged to surround the periphery of
It is composed of.

Each arm 3 of the block main body 4 has its upper surface 3a
is inclined so that the tip side thereof is lowered, and both side surfaces 3b, 3b have a tapered shape.
An anchor fixing part 6 is provided in the center of the block main body part 3 by recessing the center of the front side thereof, and an anchor tensioning material insertion hole is formed in the center part of the anchor fixing part 6 with a through opening on the back side. 7 is provided.

On the other hand, the annular wall 5 has an upper edge higher than the upper surface of the center portion 2 of the block body 4 and a lower edge lower than the lower surface of the block body 2.

When using the concrete blocks 1 for a slope constructed as described above, a large number of concrete blocks 1 for a slope are laid side by side on a slope as shown in FIG. 4, and the blocks 1 are connected to each other. When laying, as shown in Fig. 5, an anchor hole 9 is drilled in advance on the slope at the location of the anchor tensile material insertion hole 7 of each block 1, the anchor tensile material 10 is inserted, and the anchor concrete is poured by pouring cement milk. 11 was poured,
One end of the anchor tension member 10 is anchored in the ground. After solidifying the anchor concrete 11,
Each block 1 is laid, and the anchor tension material 10 is passed through the anchor tension material insertion hole 7 of each block 1. Then each anchor tension member 10 is attached to block 1.
The fixing metal fitting 12 is fixed in the anchor fixing part 6 while maintaining the tension. Although not shown in detail in the drawings, the fixing fitting 12 may be a wedge, a crimp grip, or a nut if the anchor tension member 10 is a threaded steel rod.

The legal frame formed by laying a large number of concrete blocks 1, 1, etc. for the legal frame in this way consists of a small window a surrounded by each arm part 3 of the block 1 and an annular wall part 5, and an adjacent The matching blocks 1, 1... cover the slope 8 in a mesh pattern with small windows b surrounded by the outer surfaces of the mutual annular wall portions 5.

Moreover, each annular wall part 5 bites into the slope and holds the earth and sand on the surface, and the block body part 4 suppresses the slope, thereby preventing the earth and sand on the slope from collapsing.

In addition to the above, the present invention has a block main body 4 having arm portions 3, 3... projecting in six directions as shown in FIGS. 6 to 8, and each arm portion 3, 3... Sides 5a, 5a... are arranged to connect the tips of adjacent ones.
The annular wall portion 5 may have a hexagonal shape. Note that the same parts as in the embodiment described above are denoted by the same reference numerals, and the explanation thereof will be omitted.

(Effects of the invention) As described above, the concrete block for a legal framework of the present invention has an annular wall integrally arranged to surround the block main body having a plurality of radially protruding arms. , on the arms and annular wall,
Alternatively, a slope frame with many small windows that are surrounded by the annular walls of adjacent blocks will be constructed, and the holding power of the earth and sand on the slope will increase, and Even in the event of a storm, it is possible to eliminate the flow of earth and sand, and it is also possible to grow vegetation in the small window area, making it possible to green the slope.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the first embodiment of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a - line sectional view in Fig. 1.
4 is a front view of the first embodiment with the inclination ignored, FIG. 5 is a longitudinal sectional view of the same portion, FIG. 6 is a plan view of the second embodiment, and FIG. 6 is a sectional view taken along the - line in FIG. 6, and FIG. 8 is a sectional view taken along the same line. DESCRIPTION OF SYMBOLS 1... Concrete block for legal framework, 3... Arm part, 4... Block main body part, 5... Annular wall part, 6
... Anchor fixing part, 7 ... Anchor tensile material insertion hole, 8 ... Slope, 9 ... Anchor hole, 10 ... Anchor tension material, 12 ... Fixing metal fitting.

Claims (1)

[Scope of utility model registration request] The block body includes a block main body having a plurality of arms protruding radially from a central portion, and an annular wall integrally formed at the tip of each arm and arranged to surround the periphery of the block main body. A concrete block for a legal framework, which is equipped with an anchor fixing part in the center of the part, into which an underground anchor tensile material is penetrated and fixed.