JP2006002435A - Slope reinforcing technique - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide slope reinforcing technique for enabling easy construction without possible fall-off of a wall face material covering a slope after reinforced and ground subsidence and maintenance work after constructed. <P>SOLUTION: The slope reinforcing technique comprises laying resin foam blocks 2 in multiple layers inside the wall face material 1 and placing a netted sheet 3 between the resin foam block layers and fixing the netted sheet at one end to the wall face material 1 or/and to a fitting connecting the wall face material 1. It is acceptable that window portions are provided in the wall face material 1 for slope planting or a solar power generation panel is mounted thereon. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention reinforces a surface that is usually called a slope, such as a slope of a mountain, a slope that has been embanked for laying a road or a track, or a slope of a hill that has been cut to create a residential land or a park. Concerning construction method.

  Slopes that have just been cut away from one side of a mountain or hill may be destroyed by rainwater and may cause a rockfall accident. Therefore, it is necessary to reinforce by some means to prevent collapse or falling rocks.

  For slope reinforcement, net coating and concrete coating have been used frequently. However, the net has a poor reinforcement effect and a small rock fall prevention effect. On the other hand, the concrete coating has a high construction cost and lacks the finished appearance. Therefore, in recent years, a construction method in which a panel-like wall material produced in a factory is stretched and reinforced is being adopted. If a mesh-like or lattice-like panel is used as this wall surface material, it can be planted on the wall surface and greened.

  Patent Document 1 discloses an invention of a construction method using a wall surface greening panel. The feature of the construction method is that a reinforcing material (net) is laid in the embankment filling the inside of the panel, which is a wall material, and one end thereof is fixed to the panel to prevent the panel from falling off.

JP, 2003-213689, A The construction method of the above-mentioned patent documents 1 is an epoch-making construction method in which the collapse of earth and sand is completely prevented by the wall surface panel, and also the slope can be greened. However, this method has the following difficulties. That is, since it is earth and sand that fills the inside of the panel, pressure (earth pressure) acts on the panel. Therefore, even if the panel is supported by a reinforcing material (net) laid in the earth and sand, if the slope is high or the slope is steep, the stability of the panel will be impaired, There is a risk that some of the slope will collapse due to falling off or a gap. In addition, the earth and sand filled inside the panel also has a problem that it sinks over time due to the influence of rainwater and vibration.

  The purpose of the present invention is a method that can easily perform reinforcement work, there is no risk of the wall material covering the slope after reinforcement being stably dropped, and there is no ground subsidence after construction, so that maintenance work is not required. The purpose is to provide a surface reinforcement method.

  The gist of the present invention resides in the slope reinforcing method (1) to (3) below.

  (1) A slope reinforcement method for covering a slope with a wall material, in which foam resin blocks are stacked in multiple layers on the inside of the wall material, and a net-like sheet is laid between the foam resin block layers. A slope reinforcing method characterized in that one end of a sheet is fixed to the wall material or / and a metal fitting connecting the wall material.

  (2) The slope reinforcing method according to (1) above, wherein a wall material provided with a vegetation part in part is used.

  (3) The slope reinforcing method according to (1) or (2) above, wherein a wall material provided with a solar power generation panel in part is used.

  According to the above-described construction method, since what is placed inside the wall surface material is a lightweight foamed resin block, there is almost no outward pressure acting on the wall surface material. And since the wall surface material is being fixed to the net-like sheet | seat, there is no possibility of dropping off. In addition, since the foamed resin block produced at the factory can be used, the construction is very efficient compared to the work of transporting and filling earth and sand.

  Furthermore, since the multi-layered structure of foamed resin blocks does not sink later, maintenance after completion of construction is reduced. If a material having a vegetation portion is used as the wall material, the slope can be greened, and if a solar power generation panel is used, the obtained electric power can be used for lighting or the like.

  FIG. 1 is a longitudinal sectional view for conceptually explaining an example of the construction method of the present invention. In the figure, a large number of wall materials (hereinafter referred to as panels) 1 are attached to the slope. A foamed resin block 2 is stacked on the inner side (back side) of the panel 1. A net-like sheet 3 is sandwiched between these foamed resin block layers, and the left end thereof is fixed to the panel 1.

  The lowermost end of the panel 1 is fixed to the foundation member 4 installed on the foundation concrete 8. Moreover, you may cast concrete which burys pole 6 etc. which attach a guardrail to an upper end part. The embankment 7 for planting may be placed on the uppermost stage of the foamed resin block, or may be paved with concrete or the like.

  The above structure is one of the basic structures of the slope constructed by the construction method of the present invention.

  FIG. 2 is a perspective view showing a shape example of the foamed resin block. (A) has a groove 21 at the center of the length, and (b) has two recesses 22 having the same shape. As an example of the size, W is 1000 mm, L is 2000 mm, and H is 400 to 500 mm. (A) The groove 21 in the figure may have a depth of 5 to 50 mm and a width (w) of about 200 to 900 mm. (B) The depression 22 in the figure has a side of 200 mm to 900 mm and a depth of about 5 to 50 mm. Of course, the block size is not limited to this.

  In FIG. 2C, the upper and lower surfaces are smooth and the edges are stepped. That is, one end side has a projecting portion 23 below, and the other end piece has a projecting portion 24 above. And as shown with a dashed-two dotted line, the height and width | variety of each protrusion part are made the same so that a protrusion part may overlap when another block is provided side by side.

  As shown in FIGS. 2 (a) and 2 (b), grooves and depressions are provided by placing a net-like sheet on a foamed resin block and then putting earth or sand into the grooves or depressions or filling with cement. This is to increase the friction between the net-like sheet and the block at the lever portion. Thereby, even if the length of the net-like sheet is shortened or the laying pitch of the net-like sheet is increased, a sufficient panel holding effect can be obtained.

  The shape of the foamed resin block is not limited to that shown in FIG. For example, the surface may be roughened to further increase the friction with the net-like sheet. Further, for example, in the case of the block shown in FIG. 2 (c), the net-like sheet 3 may be embedded in the thin concrete layer 31 by flowing cement thereon as shown in FIG.

  The foamed resin block is preferably a foamed styrene synthetic resin block. This hardly changes over time and can be easily cut into an arbitrary shape during construction.

  As the net-like sheet, a net made of high-strength fibers having excellent corrosion resistance such as synthetic fibers such as nylon (trade name) fiber, aramid fiber, acrylic, polyester, and polyethylene can be used. What is necessary is just to select the warp which comprises a net | network, the thickness of a weft, and the magnitude | size of a mesh (knitting) according to the inclination of the slope of construction, height, etc.

  4A and 4B are diagrams illustrating an example of a panel (outer wall material), where FIG. 4A is a side view and FIG. 4B is a front view. This panel has a mesh-like window portion 42 in a concrete outer frame 41. The size may be arbitrarily selected according to ease of handling and construction conditions. For example, L is 1 to 2 m, W is 0.5 to 1 m, t is about 140 mm, and the hollow portion 42 has a side of 0.4 to 0.8 m. Degree.

  The window portion 42 is used for planting a cloth-like sheet or the like in which seeds are buried to green the slope. You may attach a solar power generation panel to this window part. If the slope is sunny, sufficient power can be obtained for lighting. In addition, when greening or photovoltaic power generation is not required, it is not necessary to provide a window part.

  A required number of pin holes 43 are provided in the panel shown in FIG. A number of panels can be connected by inserting pins. The lowermost panel may be similarly fixed to the base member 4 with pins.

  In order to fix the net-like sheet to the panel, the end of the net-like sheet may be hooked on the hook 44 provided on the panel, or the end of the net-like sheet is sandwiched between the upper and lower panels and the pin is The panels may be connected with each other.

  The connection of a plurality of panels can be performed by using a connecting metal fitting in addition to the method using the pins. For example, it is possible to employ a method in which bolt insertion holes at the four corners of the panel 2 are provided, the bolts and nuts are fixed to the connecting bracket, and the upper, lower, left and right panels are connected. In this case, the end of the net-like sheet can be fixed to the connecting metal fitting.

  FIG. 5 is an enlarged view of a part of the slope structure shown in FIG. As shown in the figure, it is desirable that the foamed resin blocks 3 are connected to each other by a π-shaped or comb-shaped connector 51 to prevent lateral displacement. It is better to prevent displacement in the direction. When the panel is disposed, it is desirable that the joint portions of the upper and lower layers are not aligned.

  The left end of the foamed resin block may be in close contact with the panel 1, but when the panel is for planting with a window, soil 52 is placed at the end as shown in FIG. It is good to leave.

  According to the construction method of the present invention, it is possible to efficiently implement slope protection. The foamed resin block is lightweight and hardly deforms, and therefore hardly exerts outward pressure on the outer wall material (panel). Moreover, since the panel is fixed to the net-like sheet sandwiched between the layers of the foamed resin block, the panel is pulled inward, and even if the slope is steep, there is no risk of the panel falling off. . Therefore, the construction method of the present invention can be applied to an inclined surface having an arbitrary inclination angle as well as a vertical surface. Moreover, maintenance work such as repair after construction is also reduced.

  If a wall surface material (panel) having a window portion is used, a vegetation sheet or a solar power generation panel can be attached to the wall material to produce a wall surface or to generate power, thereby contributing to environmental conservation and energy saving.

It is a longitudinal cross-sectional view explaining an example of the slope reinforcing method of this invention. It is a perspective view which shows the example of a shape of a foamed resin block. It is a longitudinal cross-sectional view which shows one of the aspects which pinch | interpose a net-like sheet between the layers of a foamed resin block. It is a figure which shows an example of a panel (outer wall material). It is a one part enlarged view of the slope structure shown in FIG.

Explanation of symbols

1 ... Outer wall material (panel)
2 ... Foamed resin block 3 ... Net-like sheet 4 ... Foundation member 5 ... Concrete 6 ... Guardrail pole 7 ... Filling or paving 8 ... Foundation concrete
21 ... Groove
22 ... depression
31 ... Concrete layer
41 ... Frame
42 ... Groove
43 ・ ・ ・ Pin insertion hole
44 ... Hook
51 ・ ・ ・ Block connector

Claims (3)

  A slope reinforcement method for covering a slope with a wall material, in which foam resin blocks are stacked in multiple layers on the inside of the wall material, and a net-like sheet is laid between the layers of the foam resin block. A slope reinforcing method characterized in that one end is fixed to the wall surface material or / and a metal fitting for connecting the wall surface material.   The slope reinforcing method according to claim 1, wherein a wall material provided with a vegetation part in part is used.   The slope reinforcing method according to claim 1 or 2, wherein a wall material provided with a solar power generation panel in part is used.

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