JPH1129937A - Slope frame structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of land slide of a slope face by fixing a PC plate provided with a raised part to the slope face by a ground anchor, arranging concrete blocks therearound, giving tension between the blocks and the PC plate, and providing the prestress therein. SOLUTION: Concrete blocks 2 are installed around a precast concrete plate 1, and prestress is given to the concrete plate 1 and the blocks 2 by a tendon 4. The concrete plate 1 is square in plan view, a raised part is formed on a lower center part, a recessed groove is installed in an upper side, and a through hole pierced to a lower side of the raised part is arranged in the recessed groove. In addition, an end part of a ground anchor placed in the ground is penetrated in the through hole, and tightened and fixed in the recessed groove to fix the concrete plate 1 to a slope face. The blocks 2 are connected to each other by the tendon 4 arranged through the concrete plate 1, and the adjacent blocks 2, 2 are also connected to each other by the arranged tendon 4. Land slide is suppressed by the raised part, and the slope face can be protected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a legal frame structure.

[0002]

2. Description of the Related Art Conventionally, a landslide law frame structure is generally as shown in FIG. This is a cross-shaped arm 1
The precast concrete plate 11 provided with
These are anchored by ground anchors 13 that are cast in the ground. Precast concrete board 11
When the landslide occurs on the slope 12, the ground anchor 13 is tensioned with some allowance so that the landslide can be supported.

[0003]

However, even if the ground anchor is tensioned with some allowance, when the landslide occurs, since the lower surface of the precast concrete plate is smooth, it is not There was a problem that the lower surface of the precast concrete could not be perfectly supported by sliding.

[0004] The present invention has been made in view of the above problems, and an object of the present invention is to provide a lawn frame structure that can completely support a landslide caused by a slope. .

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the method of the present invention comprises a method of fixing a precast concrete plate having a raised portion on a lower surface to a slope with a ground anchor. A concrete block is set around the preform, and a prestress is applied by tensioning a tension member wired between the concrete block and the precast concrete plate.

In the slope structure, when a landslide occurs on the slope, the landslide is suppressed by the raised portion on the lower surface, and the landslide can be prevented.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a legal frame structure according to the present invention. FIG. 1 is a plan view of the legal frame structure, and FIG. 2 is a longitudinal sectional view of the same.

FIG. 1 shows a concrete frame structure 3 in which a concrete block 2 is installed around a precast concrete plate 1. Prestressing is applied to the precast concrete plate 1 and the concrete block 2 by a tendon 4.

The precast concrete plate 1 has a flat rectangular shape, and a raised portion 5 having a high central portion is formed on the lower surface. In addition, a concave groove 6 is provided on the upper surface of the precast concrete plate 1, and the concave groove 6 is provided with a through hole 7 penetrating to the lower surface of the raised portion 5. The end of a ground anchor 8 cast in the ground is penetrated into the through hole 7, and the end is fixed in the concave groove 6 to fix the precast concrete plate 1 to the slope 9.

The concrete blocks 2 are flat rectangular precast plates having an appropriate thickness, and are connected to each other by tension members 4 wired via the precast concrete plates 1. Adjacent concrete blocks 2, 2 are also joined to each other by the tension members 4 wired. As described above, the tension members 4 are each tensioned with a predetermined tension, so that a prestress is applied to the entire frame structure 3.

FIG. 3 shows a frame structure 3 in which three precast concrete plates 1 are continuously joined.
With such a configuration, landslide can be more effectively prevented.

In addition, as shown in FIG. 4, the precast concrete plates 1 can be arranged in a cross shape, and further, as shown in FIG. it can.

[0013] In any of these, landslides can be effectively prevented, and the slope can be completely protected.

[0014]

According to the present invention, when a landslide occurs on a slope, the slope can be completely protected by suppressing the landslide with a raised portion.

The precast concrete plate can be reliably and accurately installed on the slope.

[Brief description of the drawings]

FIG. 1 is a plan view of a legal frame structure.

FIG. 2 is a sectional view of a legal frame structure.

FIG. 3A is a plan view of another legal frame structure, and FIG. 3B is a sectional view of the same.

FIG. 4 is a plan view of another legal frame structure.

FIG. 5 is a plan view of another legal frame structure.

FIG. 6A is a plan view of a conventional frame structure, and FIG. 6B is a sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Precast concrete board 2 Concrete block 3 Frame structure 4 Tensile material 5 Ridge part 6 Groove 7 Through hole 8 Ground anchor 9 Slope

Claims (2)

[Claims] 1. A precast concrete plate having a raised portion on its lower surface is fixed to a slope by a ground anchor, and a concrete block is installed around the precast concrete plate. A legal frame structure characterized by applying prestress by tensioning the material. 2. A precast concrete plate having a raised portion provided on a lower surface in place of a concrete block around the precast concrete plate, and the precast concrete plate is fixed by a ground anchor. The legal framework described in 1.