JPH08193332A - Slope face stabilization vegetation shelf - Google Patents

Abstract

PURPOSE: To make it possible to create a full-scale vegetation which is favorable in outside appearance and high in strength and stabilize a slope face. CONSTITUTION: Anchors 1 are installed on a slope-faced natural ground properly separated from each other where there is erected a permanent form 2 made of a metal net- shaped material having an arc-shaped arch which is curved toward the natural ground. The anchors 1 are adapted to pass through a vertical part 4 installed toward the natural ground. Concrete 5 is cast into the form 2, thereby constructions an arch wall 6 and a vertical wall 7. The vertical wall 7 is fixed with the anchors 1. A soil dressing 8 is filled up between the arch wall 6 and the natural ground, thereby vegetating. The vertical wall 7 can be cast. After it is fixed with the anchors 1, a form 9 is 7 installed between the vertical walls 6 so that the arch wall 6 may be constructed. The arch wall 1 is strong enough as an arch type structural body where the thickness of the wall 6 can be reduced and a large volume of soil dressings may be brought in so that a full-scale vegetation may be available. The arch wall 6 makes it possible to be fixed with the natural ground by means of the anchors and endure not only the load of soil dressings but also collapse earth and sand load based on arch structure. This construction makes it produce an elegant arch wall shape and enhance the appearance of the whole slope face as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation shelf which is formed on a slope to improve the scenery, and more particularly to a slope-stabilized vegetation shelf which can also stabilize the slope. is there.

[0002]

2. Description of the Related Art A vegetation shelf as shown in FIG. 6 has been developed in order to achieve both the purpose of improving the landscape of the slope and the stabilization of the slope. In the vegetation shelf, a plurality of anchors a are installed by appropriately separating them in the horizontal direction of the natural ground, and a flat continuous wall portion b is fixed to the anchor a. Are packed and planted. In such a vegetation shelf, the landscape is improved by vegetation, and the wall portion b fixed by the anchor a suppresses the collapse of the ground.

In the vegetation shelf shown in FIG. 6, a prestressing force acts on the portion fixed by the anchor a in the natural direction, and the intermediate portion of the adjacent anchors a and a on the wall portion b is in the opposite direction. The force is applied, resulting in a stress distribution diagram as shown at the bottom of the figure. In order to cope with such a force, it is necessary to arrange two or more reinforcing bars d in parallel to the wall portion b to form a so-called RC rigid structure. Therefore, its design and construction are complicated and difficult, and many reinforcing bars and concrete are required as structural materials, which makes the construction time-consuming and the construction cost rises.

[0004]

For this reason, the applicant of the present invention has already filed Japanese Patent Application No. 5-47193 (Japanese Patent Application Laid-Open No. 6-24).
No. 0679), a vegetation shelf having a new structure is provided. The vegetation shelf according to the same application has a bag-shaped wire mesh material such as expanded metal and is fixed at both ends to anchors.
It is used as a hoop tension material that receives the load of the ground by the hoop tension force of the wire mesh.

In the above-mentioned vegetation shelf, since the wire mesh material is used as the hoop tension material, the structure of the wall portion is simplified and the load of collapse of the ground can be suppressed by the hoop tension structure. However, such a structure is not enough in terms of aesthetics. In other words, when you look at the slope, the wall appears flat and has a guttered shape, which is unaesthetic.

The present invention has been made in order to solve the above problems. It has a simple structure, can withstand a large load of earth and sand, has a good aesthetic appearance, and has a remarkable slope landscape. It is intended to provide an improved slope-stabilized vegetation shelf.

[0007]

In the slope-stabilized vegetation shelf according to the present invention, anchors are installed in the ground of the slope at appropriate intervals on the left and right sides. A rock bolt type anchor can also be used as this anchor, but a ground anchor that inserts a hardening material by inserting multiple tension materials through a sheath into a drilled hole in the ground and fixing it is preferable. Is. The type of anchor is determined according to the ground conditions and construction conditions at the site. In the natural ground, a discarding form having an arch portion curved in an arc shape toward the slope is erected. Wire mesh materials such as expanded metal and crimp wire mesh are used as the discarding form. A vertical portion is provided between adjacent arch portions toward the natural ground, and the above-mentioned protruding portion of the anchor from the ground surface penetrates through the vertical portion. A hard material such as concrete or mortar is cast on the arch and the vertical to form the arch and vertical walls. The anchor is fixed on the front surface of the vertical wall. In the case of a ground anchor, a prestressing force is applied and then the tension material of the anchor is fixed to a fixing portion such as an anchor head. The soil is filled between the arch wall and the ground and vegetation is planted.

The vertical wall may be precast, and the vertical wall may be installed first and fixed by an anchor. The protruding part of the anchor placed on the ground from the surface of the earth penetrates into this vertical wall installed on the ground. After pre-stressing the anchors on the vertical walls, the arched wall formwork curved in an arc shape toward the natural ground is erected between the adjacent vertical walls, and the reinforcing bars protruding from the vertical walls It is connected to the vertical wall by welding. Hardening materials such as concrete and mortar are placed on the arch formwork.

[0009]

The arch wall has an arch-shaped structure in which both right and left ends are curved toward the natural ground fixed by anchors, and receives the earth and sand load acting on the arch wall as the arch-shaped structure. Since the arch-shaped structure functions as a structure that strongly receives a load, the wall can be made thin and simple.
The thinner the wall, the more soil can be used, which enables full-scale vegetation. The arch wall that curves toward the ground is aesthetically pleasing and improves the landscape of the entire slope. Since it is fixed to the ground by an anchor that passes through the vertical wall, it can withstand load of collapsed earth and sand as well as load of soil.
By precasting the vertical wall, the construction can be simplified, and the anchor wall can be prestressed and fixed before the arch wall can be constructed. The prestressing force does not damage the arch wall.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the embodiments shown in the drawings. In FIG. 1, reference numeral 1 denotes a ground anchor, and a plurality of ground anchors are laid in the ground on the slope at appropriate intervals on the left and right. On top of the ground, the two discarding molds 2 facing each other with the expanded metal facing each other are placed upright. The discarding formwork 2 includes an arch portion 3 curved in an arc shape toward the ground and a vertical portion 4 extending toward the ground, and the plurality of arch portions 3 are provided at right and left at appropriate intervals. The vertical portion 4 extends from between the adjacent arch portions 3 toward the ground. Since it is an expanded metal, it can be easily adjusted to the unevenness of the ground and the inclination angle of the slope. The anchor 1 described above is passed through the vertical portion 4. A pipe may be arbitrarily arranged in the arch portion 3 or the vertical portion 4 to form the water passage hole 11.

Concrete 5 which is a hardening material is cast on the arch portion 3 and the vertical portion 4 of the discarding form 2 to construct the arch wall 6 and the vertical wall 7. After the concrete 5 is hardened, the anchor 1 is prestressed and fixed. The soil 8 is packed between the arch wall 6 and the natural ground, and vegetation is carried out. Since the arch portion 6 functions as an arch-shaped structure that curves toward the ground, it functions as a solid structure that receives a load as a compressive force, similar to a general arch-shaped structure. Therefore, the arch wall 6 is not cracked, and the structure has high reliability. Further, since the strength of the arch wall 6 is high, the arch wall 6 can be made thin and high, and a large amount of the soil 8 can be packed. Further, since it is fixed to the ground by the anchor 1, it can support not only the load of the earth's soil but also the load of the collapsed soil of the ground, and it effectively functions as a structure for stabilizing the slope. Further, the curved shape of the arch wall 6 toward the natural ground appears on the slope, improving the landscape of the entire slope.

FIG. 5 shows the vertical wall 7 made of precast concrete. The vertical walls 7 are installed on the ground with a proper distance between the left and right sides, and the surface of the anchor 1 placed on the ground is grounded. Through the protruding part. A prestressing force is applied to the anchor 1 to fix it, and an arch wall discarding form 9 is installed between the adjacent vertical walls 7. Both ends of the arch wall discard form 9 are welded to and connected to the reinforcing bars 10 projecting to the left and right of the front surface of the vertical wall 7. Concrete 5 for arch form 9 for arch walls
To construct the arch wall 6. In this way, the vertical wall 7 made of precast with relatively less possibility of deterioration in strength.
In addition, by pre-stressing the anchor 1 to fix it, damage such as cracks in the vertical wall 7 can be avoided as much as possible, and the pre-stressed arch wall 6 is not prestressed at all. No action and no damage to the arch wall 6.

[0013]

The present invention has the above-mentioned structure and can obtain the following effects. Since it is an arch wall with an arch type structure, it has high strength, and the wall can be made thin and high, and full-scale vegetation is possible by filling a large volume of soil. Since it is an arch wall having an arch type structure, compressive stress acts on the arch wall, and the arch wall is not cracked, resulting in a highly reliable structure. Since the shelves are fixed to the ground by anchors that pass through the vertical walls, they also function as a slope stabilization structure that can withstand not only the load on the soil but also the load on the collapsed soil. The arch wall shows an elegant arch shape curved toward the ground, and is aesthetically excellent. In addition to vegetation, the shape of the wall further enhances the landscape of the entire slope. By precasting the vertical walls, pre-stressing the anchors does not damage the arch walls due to tension. The vertical wall can be either cast on site or precast,
Highly economical because it can be arbitrarily selected in a form suitable for the site. Since the arch wall has an arch-shaped structure and has a large proof load against earth and sand loads and soil load, the vertical walls and anchors can be separated from each other by a large distance (1 span) between the vertical walls. The number of can be reduced and the construction can be performed economically. Since the arch wall is an arch-shaped structure, it has high strength and can be constructed at low cost by using less material such as reinforcing bars. Since the mold is made of wire mesh material, it is easy to match it with the unevenness of the ground and the slope of the slope.

[Brief description of drawings]

FIG. 1 is a perspective view of a slope-stabilized vegetation shelf.

FIG. 2 is a plan view of a slope-stabilized vegetation shelf.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is a perspective view using a vertical wall made of precast.

FIG. 6 is a cross-sectional view of a conventional vegetation shelf.

[Explanation of symbols]

 1 Anchor 2 Discarded formwork 3 Arch part 4 Vertical part 5 Concrete 6 Arch wall 7 Vertical wall 8 Customer soil 9 Discarded formwork for arch wall 10 Rebar 11 Water passage hole

Claims (2)

[Claims] Claims: 1. Anchors are placed on the ground of the slope at an appropriate distance from each other on the left and right, and a discarding form made of wire mesh material having an arch portion curved in an arc shape toward the slope is erected on the ground. , The discarding form has a vertical part between adjacent arch parts toward the ground, the anchor is passed through the vertical part, and a hardening material is placed in the arch part and the vertical part of the discarding form. A slope-stabilized vegetation shelf in which an arch wall and a vertical wall are formed, the vertical wall is fixed to the anchor, and vegetation soil is filled between the arch wall and the ground. 2. Anchors are laid in the ground on the slope at an appropriate interval on the left and right sides, and vertical walls made of precast are installed on the ground on the slope at an appropriate interval in the left and right, and the vertical walls are the anchors. Fixed to the vertical wall, the arch wall waste formwork made of wire mesh material curved in an arc shape toward the slope between the adjacent vertical walls is erected on the ground, and the hardened material is applied to the archwall waste formwork. A slope-stabilized vegetation shelf that is installed to form an arch wall and is filled with vegetation soil between the arch wall and the ground.