JP3474479B2 - Slope protection method - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to protection using slope retaining.
It is related to the construction method .

[0002]

2. Description of the Related Art Conventionally, as a protection method for slopes, a soil retaining method in which a formwork is assembled and concrete is placed on site, or mortar is sprayed on the slopes has been widely protected. However, in the former, there is a problem that it is difficult and difficult to form a formwork on a sloped slope and the cost is high.
In the latter case, the mortar was brittle and the soil retaining action was poor, and there was the disadvantage that it could not be replanted.

[0003]

SUMMARY OF THE INVENTION Therefore, the present invention provides a slope protection method which is suitable for greening as well as it is possible to easily form a mold even on a sloped slope and secure soil retention at low cost. To do .

[0004]

For this reason, the slope protection method of the present invention is a method of applying a retaining wall to the slope, which is provided with an opening / closing member at the upper end and inside which is provided with an expansion limit string to be connected to the front and back. Using a bag form that intervenes to limit the width of the bag, the support bar driving process of driving multiple support bars such as reinforcing bars horizontally on the slope with a space between them, and inside the bag form with the lower end supported Bag form holding step of holding the bag form so that the end of the support rod projecting from the slope is arranged at the upper part of the opening of the, and horizontal bar for fixing the horizontal bar to the end of the support rod in the bag form After the process and horizontal arrangement,
The bag form closing step of closing the opening and closing member of the bag form to close the upper surface, the mortar placing step of driving the mortar into the bag form, and the rear space of the soil retaining wall formed by mortar injection into the bag form It is composed by sequentially performing the stone and stone filling process of filling soil and stones. It should be noted that a spacer may be attached to the horizontal streaks to provide a space between the upper end surface in the bag of the bag form and the horizontal streaks. Also,
A vertical line that can be accommodated in the bag form may be fixed to the horizontal line. Further, the lower end of the bag form may be locked and supported by a stopper attached to a support rod of the bag form arranged therebelow.

Further, the bag form of the present invention is a flexible bag form in which an opening / closing member is provided at the upper end in the longitudinal direction, and an expansion limit string connecting to the front and back is provided inside to limit the bag width.
An insertion hole into which a support rod such as a reinforcing bar can be inserted is provided in the upper portion of the back surface, and a mounting hose mounting hole for driving mortar is provided in a part thereof.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the details of the method of the present invention will be described with reference to the illustrated embodiment, and the embodiment of the bag form will also be described. In the construction of the soil retaining on the slope shown in FIG. 1, first, a lightweight and high-strength bag form 1 made of a synthetic fiber double woven fabric is used.

This bag form 1 uses a cloth form that has been conventionally used by laying it on a seawall of a river harbor and filling it with mortar. As shown in FIG. Opening and closing fasteners 12 are provided on the rear side, eyelets 13 are attached near both ends of the upper back surface and in the center, and a reinforcing bar insertion hole 14 is provided in the center. Further, a mortar casting cylinder 15 is connected to the upper center of the surface. In addition,
A large number of open-expansion restricting strings 10 connected to the front and back are sewn inside to prevent further expansion of the purse.

In the earth retaining on the slope S, the first step is a support rod driving step, in which the deformed bar 2 serving as a support rod is driven into the slope S by about 60 cm to project the outer end from the slope S by about 30 cm. At a position approximately 30 cm from the outer end of the deformed reinforcing bar 2, an upward stopper 21 is provided so that the stopper 21 has a slope S.
Drive it so that it is placed near them. It is to be noted that a plurality of deformed reinforcing bars 2 (three in this example) are driven in parallel with a lateral interval.

The second step is a bag form holding step, and as shown in FIG. 3, the reinforcing bar end 20 of the deformed rebar 2 protruding into the reinforcing bar insertion hole 14 of the bag form 1 with the opening and closing fasteners 12 opened.
And the bag form 1 is suspended and held. In this state, the reinforcing bar end 20 is arranged at the upper part of the opening in the bag form 1, the lower end of the bag form 1 is brought into contact with the slope S, and the stopper 21 of another deformed rebar 2 punched in below. It is locked. The lower end of the lowermost bag form 1 may be supported by a stopper made of another material.

After the bag form 1 is held, it is a horizontal reinforcing step, and as shown in FIG.
Is fixed. In this example, as shown in FIG.
A reinforcing bar having a downward vertical bar 4 fixed to the horizontal bar 3 is used to house the bag in the bag form 1, and a spacer 5 is attached to the horizontal bar 3.

Then, after the horizontal arrangement, a bag form closing step of closing the opening / closing fastener 12 of the bag form 1 to close the upper surface is performed. As a result, the bar arrangements 3 and 4 are hidden inside the bag form 1, and the spacers 5 provide a space between the upper end surface of the bag form 1 in the bag and the horizontal line 3. This is to secure a sufficient mortar layer on the horizontal streaks 3.

Then, as shown in FIG. 6, a mortar driving step is carried out in which the mortar driving hose 6 is inserted into and held in the mortar driving cylinder 15 provided in the upper center of the surface. As a result, the inside of the bag form 1 is inflated with mortar to form the soil retaining wall K, and the bag form 1 is integrated with the mortar and left as it is. The mortar casting cylinder 15 is cut off.

At this time, since the lower portion of the bag form 1 is locked by the stopper 21, it does not move to the road side (direction opposite to the slope), but comes into contact with the slope side to hold the earth retaining wall K. Is formed. Further, the bag form 1 does not spread to a width greater than a predetermined value due to the interposition of the expansion limit string 10 and maintains a constant width.

After the soil retaining wall K is dried and formed, as shown in FIG.
The deformed rebar 2 may be filled by performing a debris filling step of filling the soil 7 between the front and rear soil retaining walls K and used for greening.

As described above, according to the construction method of this example, since the bag form 1 is used, the form can be easily installed by holding the deformed rebar 2 even in the case of the uneven slope, and the mortar is placed on the bag form 1. Therefore, the cheap retaining wall K can be formed. In addition, the horizontal streaks 3 and the vertical streaks 4 are arranged inside the retaining wall K to form a strong skeleton, and the expansion limiting string 10 of the bag form 1 forms the retaining wall K having a constant width.

Although this example has the above-mentioned construction method and configuration, the present invention is not limited to this. For example, in the construction method, regardless of the shape, size and configuration of the bag form used,
The type of the opening / closing member is not limited. Further, the supporting means at the lower end of the held bag form is appropriate. Further, the shape of the spacer used to provide the gap between the upper end surface of the bag form inside the bag and the horizontal streaks is arbitrary, and the vertical streaks may not be used as long as it is a thin earth retaining wall. It should be noted that crushed stone may be mixed with the mortar that is driven into the bag form, and the crushed stones may be filled in the soil retaining walls before and after when vegetation is not required.

In addition, in the bag form, regardless of its size, material and shape, the structure of the opening / closing member provided at the upper end is appropriate, and the material and mounting structure of the expansion limiting string connected to the front and back are also suitable. It is optional.

[0018]

According to the first aspect of the present invention, since the bag form is used, the form can be installed easily by holding the support rod even in the case of the uneven surface, and by placing the mortar on the bag form. Since it is possible to form an inexpensive earth retaining wall, it is especially excellent as a green soil retaining area. According to the second aspect, since the space can be provided between the upper end surface of the bag form inside the bag and the horizontal bar, the bar arrangement in the mortar becomes good. According to claim 3, a firm soil retaining wall can be formed by arranging the vertical reinforcement. According to the fourth aspect, the mortar can be smoothly placed without moving the bag form when the mortar is placed .

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of one embodiment of the present invention.

FIG. 2 is a perspective view from the back with a part cut away showing an example of the form of the bag form.

FIG. 3 is a vertical cross-sectional view showing a process of holding the bag form.

FIG. 4 is a vertical cross-sectional view showing a step of horizontally arranging a bag mold.

FIG. 5 is a perspective view of a bar arrangement and a spacer.

FIG. 6 is a vertical cross-sectional view showing a step of placing mortar in the bag form.

FIG. 7 is a vertical cross-sectional view after forming a retaining wall.

[Explanation of symbols]

S slope K Dodome wall 1 bag formwork 10 Expansion limit string 12 Opening and closing fasteners 14 Rebar insertion hole 15 Mortar casting cylinder 2 Deformed bar 20 edge 21 Stopper 3 horizontal lines 4 vertical lines 5 spacers 6 Mortar driven hose 7 Saturday

Claims (4)

(57) [Claims] 1. A method for applying an earth retaining wall to a slope, which is provided with an opening / closing member at the upper end and is connected to the front and back sides of the expansion limit string 1.
Using a bag form 1 with 0 inside to limit the bag width, a supporting rod driving step of driving a plurality of supporting rods such as reinforcing bars 2 side by side into the slope and supporting the lower end. The supporting rod end portion 20 protruding from the slope is provided at the upper part of the opening in the formed bag form.
A bag form holding step of holding the bag form 1 so that
A horizontal rebar step of fixing the horizontal bar 3 to the support bar end 20 in the bag frame, a bag frame closing step of closing the opening / closing member of the bag frame 1 to close the upper surface after the horizontal bar, and a bag mold A slope protection method in which a mortar placing step of driving mortar into the frame and a debris filling step of filling soil and stones in the space behind the retaining wall K formed by mortar injection into the bag form are sequentially performed. 2. The spacer 5 is attached to the horizontal bar 3 to provide a space between the upper end surface of the bag form 1 inside the bag and the horizontal bar 3.
Slope protection method. 3. The slope protection method according to claim 1 or 2, wherein a vertical streak 4 which can be accommodated in the bag form is fixed to the horizontal streak 3. 4. The slope protection method according to claim 1, wherein the lower end of the bag form is locked and supported by a stopper attached to a support rod of the bag form arranged below.