JP3113634B2 - Slope protection block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a slope protection block.

[0002]

2. Description of the Related Art In recent years, when planning or constructing a new road in a mountainous area or improving or widening an existing road, the slope is protected by a concrete block 22 as shown in FIG. .

[0003]

However, most of the above-described slope protection blocks are concrete blocks, so that they are not easy to handle when transported and installed on the slope.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a slope protection block that can be easily transported, handled, and installed.

[0005]

SUMMARY OF THE INVENTION A slope protection block for solving the above problems is a slope protection block in which a plurality of arms project from a central body to which an upper end of a tensile member is fixed. The center body and the arm are formed of a steel plate so as to be hollow, and the arm is formed on a joint surface with the center body.
The protrusion at the tip of the piece is inserted into the insertion hole of the central body
The central body is detachably formed separately from the central body, and the central body is provided with a concave portion for accommodating a head of a tensile member, the concave portion is closed by a lid, and a length direction in the hollow portion of the arm portion is provided. Is characterized in that a spine plate is provided at the center portion and a connection fitting is protruded at the tip of the arm portion.

According to the first aspect of the present invention, when the slope protection block is installed on the slope, the center body and the arm are transported to the site in a state where the center body and the arm are divided, and they are assembled on the site to protect the slope. Form a block. In this case, the central body and the arm
Are hollow, making them easy to transport and handle.
Simple, and the slope protection block can be easily applied to the slope.
Can be installed. Also, since the recess was closed by the lid,
The head of the tension material stored in the recess is protected from falling rocks etc.
You. In addition, the central body and the arm are made of steel plate.
Be more economical.

The invention according to claim 2 is characterized in that a joint protruding piece for reinforcing the joint with the central body is provided on the joint surface of the arm portion with the central body.

According to the second aspect of the present invention, the arm can be easily joined to the central body by the joining projection.

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a slope protection block will be described below in detail with reference to the drawings. (1) in FIG.
Is a horizontal cross-sectional view of the slope protection block, (2) is a cross-sectional view taken along line AA of (1), and (1) of FIG. 2 is a slope protection block in which one arm is separated from the central body. (2) is a cross-sectional view taken along the line BB of (1).

A slope protection block (hereinafter referred to as a block) 1 is formed of a central body 2 made of a steel plate and formed hollow, and an arm 3 formed of a steel plate and formed hollow. The central body 2 and the arm 3 are separately formed, and these are joined by bolts 4 such as medium-carbon steel, alloy steel bolts, and high-tensile steel bolts to form the hollow block 1.

The central body 2 is a rectangular box body 5 having an open upper surface.
And a concave portion 7 formed by the cylinder 6 is formed on the upper portion thereof,
The outer surface of the concave portion 7 is reinforced by a reinforcing plate 8 provided radially. The upper surface of the recess 7 is closed by a lid 9, and a through hole 10 through which a tensile material penetrates is formed in the center of the bottom of the recess 7.

The arm 3 is a flat rectangular shape, and is reinforced by a spine plate 11 provided at the center in the length direction. Arm 3
Is not limited to the above-described embodiment, but may be tapered and formed gradually lower toward the tip. At the tip of the arm 2, a connection fitting 12 for connecting to an adjacent block is provided in a protruding manner.

FIGS. 3 to 5 show another block 13 which has substantially the same structure as the block 1 described above, except that the arm 3 is provided with a joint projection 14. The joining protrusion 14 is provided on the joint surface of the arm 3 with the center body 2, and the projection 15 at the tip is inserted into the insertion hole 16 of the center body 2 to further strengthen the joint with the center body 2. I have. Therefore, when the arms 3 are abutted against each other, as shown in FIG. 5, a fitting portion 17 into which the center body 2 is fitted by the joining protruding pieces 14 is formed. Then, when the center body 2 is fitted into the fitting portion 17 and the projection 15 is inserted into the insertion hole 16 of the center body 2,
As shown in FIG. 3, the center body 2 and the arm 3 are joined.

Although the blocks 1 and 13 are made of steel, the central body 2 and the arm 3 may be made of hollow prestressed concrete. Bolts 4 and P, such as bolts and high-tensile steel bolts
It can also be joined with a C steel wire or the like (not shown). Furthermore, the central body 2 is not limited to a quadrangle, but may be another polygon or a circle, and the number of the arms 3 may be a corresponding number, that is, three, five, or six.

FIG. 6 shows the block 1 installed on the slope 18 fixed by a tension member 19, and the head 19 a of the tension member is accommodated in the recess 7 closed by the lid 9. It is protected from falling rocks. The block 1 is carried to the site with the central body 2 and the arm 3 separated from each other, and these are assembled and formed at the site. Next, the blocks 1 formed in this manner are sequentially placed on the slope 18 and are tension-fixed by the tension members 19 fixed to the ground 21.

[0024]

Since the central body and the arm are divided, the transportation and handling to the site can be facilitated, and the slope protection block can be easily assembled and formed at the site.

The joining protruding piece facilitates and firmly joins the arm portion and the central body, thereby increasing the integrity.

Since the central body and the arm are hollow, they are light in weight, so that they can be easily transported and handled, and the block for protecting the slope can be easily formed on site.

Since the head of the tension member is accommodated in the recess and the recess is closed by the lid, the head of the tension member is protected from falling rocks.

Since the central body and the arm are made of steel, the weight is light, and the transportation, handling and construction thereof can be simplified, and the cost is low.

Since the central body and the arm are made of hollow concrete, they can be easily transported, handled and constructed, and a concrete slope protection block can be easily formed.

[Brief description of the drawings]

FIG. 1 (1) is a horizontal cross-sectional view of a block, (2)
FIG. 2 is a sectional view taken along line AA of FIG.

2A is a horizontal sectional view of a block in which one arm is removed from a central body, and FIG. 2B is a sectional view taken along line BB of FIG.

FIG. 3 is a sectional view of another block.

FIG. 4 is a sectional view of a block in which a central body and an arm are separated.

FIG. 5 is a horizontal sectional view of the butted arms.

FIG. 6 is a sectional view in which a block is installed on a slope.

FIG. 7 is a sectional view in which a conventional concrete block is installed on a slope.

DESCRIPTION OF SYMBOLS 1, 13 Block 2 Center body 3 Arm part 4 Bolt 5 Box body 6 Cylinder 7 Depressed part 8 Reinforcement plate 9 Lid body 10 Through hole 11 Spine plate 12 Connection fitting 14 Joining protrusion 15 Projection 16 Insert hole 17 Fitting part 18 Slope 19 Tensile material 21 Ground 22 Concrete block

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-273158 (JP, A) JP-A-7-166555 (JP, A) JP-A-7-158075 (JP, A) 40331 (JP, U) Jikken Hei 2-34246 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁷ , DB name) E02D 17/20 103

Claims (1)

(57) [Claims] 1. A tension member upper end fixing a plurality of slope protection block the arms protrudes from the central body is of the the central body and the arm portion formed to be hollow in the steel plate, the arms
Is attached to the tip of the joint projection that protrudes from the joint surface with the central body.
Insert the protrusion into the insertion hole of the center body and remove the center body
The central body is provided with a concave portion for accommodating the head of the tensile member, and the concave portion is closed with a lid,
A slope protection block characterized in that a spine plate is provided at a central portion in the longitudinal direction of the hollow portion of the arm portion, and a connection fitting is protruded from a tip portion of the arm portion.