JP2003160940A - Pressure-receiving structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible for a pressure-receiving structure for stabilizing the slope surface, the center of the structure fixed to the slope surface with an anchor bolt, to apply a uniform pressing force to the whole of the slope surface by reducing the differences of applying forces on the periphery, and to be laid on the slope surface without forming any gaps by eliminating the stepped differences with an adjacent pressure-receiving structure. <P>SOLUTION: The pressure-receiving structure is hexagon-shaped as a whole, having cells 2 of hexagonal honeycomb-shape, and the thickness of the structure is made to increase toward the center to gradually gain extra height. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure receiving structure fixed to a slope by anchor bolts for stabilizing the slope.

[0002]

2. Description of the Related Art In recent years, a plate-shaped block made of precast concrete has been used as a pressure receiving structure for bearing the load of earth and sand on the slope to stabilize the slope, and the center of the pressure receiving structure is fixed to an anchor bolt fixed to the ground on the slope. A method of inserting into the hole formed in the part and screwing and fixing the nut to the protruding end of the anchor bolt is adopted, and in order to reduce the weight of the pressure receiving structure, it is made of glass fiber reinforced plastic FRP or glass fiber reinforced urethane foam. The ones that have been done are also known.

The pressure receiving structure can be fixed by simply inserting it into one anchor bolt and tightening the nut screwed into the protruding end of the structure, so that the work efficiency at the time of construction is good, and the earth and sand on the slope is relatively large. Can be loaded,
The slope with the pressure receiving structure has a problem in the landscape. JP 2
In 000-336656, in order to improve the landscape of the slope where the pressure receiving structure is attached, the pressure receiving structure is made up of vertical and horizontal rails in a grid pattern, and vegetation is made through the squares composed of vertical and horizontal rails. What has been made possible is disclosed.

[0004]

When the pressure receiving structure is fixed to the slope by anchor bolts, it is desired that the slope be pressed by a uniform pressing force to receive the earth and sand load.
If the pressure receiving structure is, for example, a square as shown in FIG. 1, and the center portion is fixed with anchor bolts, the length from the center o to the side is l, and the length to the apex a at the intersection of the sides is Is √2l, and the distance from the vertex a to the center o is √2 times the distance from the center o to the shortest point b.
The difference in the pressing force between the points a and b becomes large.

In order to eliminate the difference in pressing force, the pressure receiving structure may be circular, but the pressure receiving structure cannot be spread on the slope without any gap. An object of the present invention is to provide a pressure receiving structure which can reduce the difference in applied pressure and can be spread over the slope without a gap.

[0006]

According to a first aspect of the present invention, a central portion is inserted into an anchor bolt fixed to a ground on a slope, and the bolt is fixed by tightening a nut screwed into a protruding end of the bolt. It is a pressure-receiving structure formed in a large number in a continuous manner, and is characterized by being configured as a pentagonal or more regular polygon, that is, a regular n-gon (where n ≧ 5), so that the slope can be spread without gaps. To do.

According to the pressure receiving structure of the present invention, vegetation is possible through the squares. In addition, the regular polygon pressure receiving structure is n
As becomes larger, the value becomes closer to a circle, the distance from the center becomes uniform, and the difference in pressing force also decreases. In the pressure receiving structure of the present invention, the length of each side becomes shorter than the side of a square having the same area by forming a pentagonal or more regular polygon, and when laid side by side on a slope, the pressure receiving structures adjacent to each other Fewer sides touch each other. Therefore, even if the pressure receiving structure is inclined due to the unevenness of the slope, it is possible to reduce the vertical separation of the sides of the adjacent pressure receiving structures in contact with each other. The squares of the pressure receiving structure according to the present invention are composed of vertical bars and horizontal bars and may be rectangular or square, or may be pentagonal or polygonal.

According to the second aspect of the present invention, the central portion is inserted into the anchor bolt fixed to the ground of the slope, and the nut is screwed into the projecting end of the bolt to fix the bolt. A large number of pressure receiving structures,
The feature is that the height is gradually increased from the side toward the center. When a concentrated load is applied to the center of a pressure-receiving structure with a constant thickness, the pressing force is the largest in the central part, and the farther away from the central part is the greater the amount of bending and the smaller the pressing force, but the thickness goes toward the central part. If the thickness is increased, the bending at the sides is reduced, and sufficient pressing force can be applied to the slope even at the peripheral edge to hold it down.

The invention according to claim 3 relates to claims 1 and 2.
The invention according to claim 1 is combined, and the invention according to claim 1 is characterized in that the height is gradually increased from the side toward the center. According to the present invention, the effects of the inventions according to claims 1 and 2 can be obtained together.
The material of the pressure receiving structure of each of the above inventions may be steel or other metal, or may be the above-mentioned FRP or other resin.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The pressure-receiving structure 1 shown in FIG. 2 has a regular hexagonal shape, and the squares 2 also have a regular hexagonal honeycomb shape. As shown in FIG. 3, the thickness increases toward the center and gradually increases. As shown in FIG. 3, the anchor bolts 4 are fixed to the ground 3 on the slope, and the pressure receiving structure 1 is inserted into the projecting portion from the ground 3 through the central squares 2 as shown in FIG. Insert the retainer plate 5 and screw the cap nut 6 into the protruding end of the bolt to insert the pressure receiving structure 1
Tighten and fix.

FIG. 4 shows an embodiment in which the pressure receiving structure 1 is used and assembled so that each side of the slope is in contact with the adjacent pressure receiving structure 1 without any gap. According to the pressure receiving structure of the present embodiment, the difference between the distance from the center to the apex and the distance from the center to the shortest side is smaller than that of the pressure receiving structure shown in FIG. That is, in the case of the pressure receiving structure shown in FIG.
The distance from the center o to the furthest vertex a is √2l, while the distance to the point b on the nearest side is l and the point a is b.
While the distance is about 1.41 times the point, in the case of the present embodiment, if the length of one side is d, the distance from the center to the farthest vertex is also d, and the distance to the nearest side is The distance is 1 / 2√3D, and the farthest apex is about 1.15 times the distance to the nearest side, and the distance difference is smaller than that shown in FIG.

The distance difference decreases as the polygon approaches a circle, but when laying pressure-receiving structures of the same polygon and the same size, it is necessary to lay the hexagons so that there is no gap between adjacent pressure-receiving structures. It is the limit. However, when different polygons of different sizes are combined and laid out, it is possible to lay out even polygons beyond hexagons without gaps.

The side length D is also smaller than the side length 21 of the pressure receiving structure shown in FIG. That is, in the pressure receiving structure 1 of the present embodiment, when the length of one side is D, the pressing area is

[Equation 1] Becomes When the pressing area of the pressure receiving structure 1 and the pressing area of the pressing structure shown in FIG.

[Equation 2] And this

[Equation 3] Becomes Therefore, the length of one side of the pressure receiving structure 1 is shorter than the length 21 of one side of the pressure receiving structure shown in FIG.

In the pressure receiving structure of this embodiment,
By tightening the nut 6 by increasing the thickness toward the center part, the bending of the periphery when a concentrated load is applied to the center of the pressure receiving structure is reduced, and the pressure is also applied to the slope at the peripheral edge, and the central part It is possible to receive the load of earth and sand by reducing the difference in the applied pressure between and.

[0015]

According to the invention of claim 1, the landscape of the slope can be improved by vegetation through the squares, and the difference in the pressing force at the peripheral portion can be reduced to achieve a substantially uniform pressing force. It is possible to suppress the slope, and if the length of each side is the same pressing area, it becomes smaller as the n of the regular n-sided polygon becomes larger, and the pressure receiving structure may tilt due to the unevenness of the slope. However, it is possible to reduce the gaps formed above and below the sides of the adjacent pressure receiving structures that are in contact with each other, and to reduce the steps.

According to the second aspect of the present invention, when the nut is tightened, the bending at the peripheral edge when a concentrated load is applied to the center of the pressure receiving structure is reduced, and sufficient pressure is applied to the slope even at the peripheral edge. It can hold down the load and the load of earth and sand. According to the invention of claim 3, the effects of the invention of claims 1 and 2 can be obtained together.

[Brief description of drawings]

FIG. 1 is a diagram showing a square pressure receiving structure.

FIG. 2 is a plan view of a pressure receiving structure according to the present invention.

FIG. 3 is a sectional view showing how the pressure receiving structure according to the present invention is attached to a slope.

FIG. 4 is a plan view in which the pressure receiving structure shown in FIG. 2 is spread.

[Explanation of symbols]

1 ... Pressure receiving structure 2 ... square 3 ... Ground 4 ... bolt 5 ... Holding plate 6 ... Cap nut

Claims (3)

[Claims] 1. A pressure receiving structure in which a central portion is inserted into an anchor bolt fixed to the ground of a slope and is fixed by tightening with a nut screwed into a projecting end of the bolt, and a large number of squares of arbitrary shape are continuously formed vertically and horizontally. The pressure receiving structure is characterized in that it has a regular polygonal shape of pentagon or more and can be spread on the slope without any gap. 2. A pressure-receiving structure in which a central portion is inserted into an anchor bolt fixed to the ground on the slope and is tightened and fixed by a nut screwed into the projecting end of the bolt, and a large number of squares of arbitrary shape are continuously formed vertically and horizontally. The pressure receiving structure is characterized in that the height is gradually increased from the side toward the center. 3. The pressure receiving structure according to claim 1, wherein the height is gradually increased from the side toward the center.