JP2863737B2 - 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 slope protection block.

[0003] Since the slope protection block is mostly a concrete block, it is not easy to handle.

Therefore, in order to solve such a problem, a hollow slope protection block 23 made of steel as shown in FIG. 9 has been used. Since it is made of steel and hollow, it has an advantage that it can be easily handled, and that it can cope with some unevenness, so that it can be installed without any gap between the slope 24.

[0005]

However, in the above-described slope protection block, the anchor head protrudes from the upper surface of the slope protection block and is fixed. Etc., or it could fall off.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to simplify the handling of a slope protection block and to provide an anchor head for a slope protection block installed on a slope. The purpose is to prevent the fixing tool in the section from being damaged or dropped by falling rocks or the like.

[0007]

Means for solving the above problems are as follows. An arm formed of a steel plate and having a hollow shape projects in a cross shape, and a concave portion is formed at the center of the intersection of the arms. An insertion tube for inserting a tensile member is provided in the recess, and the insertion tube is fixed to the recess by a radial stiffening plate.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a slope protection block will be described below in detail with reference to the drawings. FIG. 1 is a horizontal sectional view of the slope protection block, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional view taken along line BB of FIG. 2, and FIG. is there.

A slope protection block (hereinafter, referred to as a block) 1 is formed by crossing arms 2 which are made of iron plate and are hollow.

The arm portion 2 is tapered and formed so as to be gradually lower toward the tip, and a back plate 3 provided at a central portion in a longitudinal direction;
It is reinforced by a reinforcing plate 4 provided crossing the back plate 3. At the tip of the arm 2, a connecting fitting 5 is protruded,
It can be connected to an adjacent slope protection block. At the center of the intersection of these arms 2 is a cylindrical body 6
Is provided with its upper end protruding from the upper surface of the block 1.

A back plate 3 and an arm 2 are provided on the outer peripheral surface of the cylindrical body 6.
Is fixedly connected to the fixing plate 7 to fix the cylindrical body 6 firmly. Further, a bottom plate 8 is provided inside the cylindrical body 6 to form a concave portion 9, and an insertion tube 10 for inserting a tensile material is provided at the center of the concave portion 9, and this is inserted between the cylindrical member 6 and the insertion tube 10. It is fixed to the cylindrical body 6 by a stiffening plate 11 provided radially.
By reinforcing the insertion tube 10 and the bottom plate 8 with the fixing plate 7 and the stiffening plate 11 as described above, the concave portion 9 is strengthened, and has a strength necessary to fix and anchor the anchor head.

FIG. 6 shows a block 1 installed on a slope 12 fixed by an anchor 13, and an anchor head 14 is fixed in the recess 9. As shown in FIG. 7, a tension member 15 passed through the insertion tube 10 is tensioned by a tension jack, and its end is fixed by a wedge 17 of an anchor head 16 and covered with an anchor cap 18. Since the anchor head 14 is fixed in the recess 9 in this manner, it is protected from falling rocks and the like.

Furthermore, since the block 1 is formed of a hollow steel plate, the block 1 can be easily handled and installed on the slope 12, and the mortar, cushioning material, etc., can be easily provided on the uneven surface. Therefore, there is no gap between the vehicle and the slope.

FIG. 8 shows an embodiment of the second embodiment, which has the same configuration as that of the first embodiment except that the concave portion 9 is closed by a lid 19. An inner lid 20 is provided on the inner surface of the lid 19.
Is provided on the arm 2 via a packing 21 with a bolt 22.
It is fixed at. Therefore, when the anchor head 14 is fixed to the concave portion 9 as shown in FIG.
Since the intrusion of soil and the like into the soil can be prevented, management after anchor anchoring can be appropriately performed.

[0015]

According to the present invention, the insertion tube is fixed by the radial stiffening plate and the concave portion is strengthened, so that the anchor head can be tensioned and fixed in the concave portion.

Since the anchoring device of the anchor head is housed in the recess, damage or falling off due to falling rocks or the like can be prevented.

Since the arms are hollow and tapered, and are formed gradually lower toward the distal end, the weight of the block is reduced and the handling is simplified. In addition, it is possible to easily cope with some irregularities on the slope. Further, the arm portion is reinforced by the back plate and the reinforcing plate provided at the central portion in the long side direction, so that sufficient strength is maintained.

Since the cover prevents the intrusion of earth and sand into the recessed portion, the fixing portion at the anchor head can be properly managed.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a block.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a sectional view taken along line CC of FIG. 2;

5A is a cross-sectional view of a concave portion, and FIG. 5B is a sectional view of FIG.
FIG. 4 is a sectional view taken along line D.

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

FIG. 7 is a cross-sectional view of a concave portion where an anchor head is installed.

FIG. 8A is a cross-sectional view of a recess provided with a lid, and FIG.
FIG. 3 is a cross-sectional view in which an anchor head is fixed to a recess provided with a lid.

FIG. 9 is a cross-sectional view in which a conventional block is installed on a slope.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 23 Slope protection block 2 Arm part 3 Back plate 4 Reinforcement plate 5 Connecting metal fitting 6 Cylindrical body 7 Fixing plate 8 Bottom plate 9 Depression 10 Insertion tube 11 Stiffening plate 12, 24 Slope 13 Anchor 14 Anchor head 15 Tensile material 16 Anchor head 17 Wedge 18 Head cap 19 Lid 20 Inner lid 21 Packing 22 Bolt

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-214728 (JP, A) JP-A-5-179656 (JP, A) JP-A 63-108444 (JP, U) 14109 (JP, B2) (58) Field surveyed (Int. Cl. ⁶ , DB name) E02D 17/20 103 E02D 5/76

Claims (3)

(57) [Claims] 1. An arm formed of a steel plate and having a hollow shape projects in a cross shape, a concave portion is formed at the center of the intersection of the arm portions, and an insertion tube for inserting a tensile material is formed in the concave portion. A slope protection block provided, wherein the insertion tube is fixed to the concave portion by a radial stiffening plate. 2. The arm has a hollow tapered shape and is formed so as to be gradually lower toward a tip end thereof, and a back plate is provided at a central portion in a long side direction, and the back plate is reinforced by a reinforcing plate. The slope protection block according to claim 1, characterized in that: 3. The slope protection block according to claim 1, wherein the recess is closed by a lid.