JPH08109633A - Space filling method between earth retaining wall and wale and bag body used therefor - Google Patents

Abstract

PURPOSE: To easily remove the consolidation body consolidated when a hardening material is eliminated while making it possible to prevent leakage when a hardening material is cast without carrying out assembly work of a troublesome form or a wire net and, at the same time, to enable the prevention of adherence of the hardening material to every section. CONSTITUTION: A main body section 5 of a flat and flexible bag body 4 is inserted along a space (d) formed between the wall surface of an earth retaining wall 3 and the rear of a wale 2, and the main body section 5 is hold by providing a bracket 11 to single pipe 9 with a hanging section 7 inserted. An injection port 6 communicating with the inside of the main body section 5 is connected to the tip of a mortar injection hose 14. The main body section 5 is expanded along a space-shape by injecting mortar M inside to fill the main body section 5 through the hose 14, and the mortar M is solidified in a expansion state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method suitable for filling a gap between a mountain retaining wall and an abdomen with a solidifying material such as mortar or concrete to fill the gap, and a bag used for this gap filling method. Regarding the body

[0002]

2. Description of the Related Art For a relatively deep root mower,
H-shaped steel and I-shaped steel columns or steel sheet piles are hung along the respective wall surfaces of the facing mountain retaining walls, and a bellows is horizontally installed inside the steel columns or steel sheet piles, and between the facing bellows. It is common to cross the crossbeams at right angles to this, and the groundwater that acts from the ground around each facing mountain retaining wall is applied to the crossbeams via steel columns or steel sheet piles and upsets. It is constructed so that it can withstand the earth's water pressure by supporting it with tension.

Actually, since the wall surface of the Yamadome wall is indefinite, an irregular space is often formed between the wall surface of the Yamadome wall and the abdomen. Since the support of water pressure becomes unstable, conventionally, a wedge called camber is driven into the gap formed between the mountain retaining wall and the abdomen uplifting, or a solidifying material such as mortar or concrete is poured and filled. It is solidified to ensure that the soil water pressure acting on the mountain retaining wall is supported through this solidified body.

[0004]

However, when a large gap is formed which cannot be dealt with by the wedge, a padding frame may be attached to the lower part of the abdomen to pour and fill the solidified material. There is the following problem because it is necessary to lay wire mesh and take measures to prevent the solidified material from leaking.

The work of assembling the formwork has to be performed in a narrow space, which is troublesome and the workability is poor. The width dimension of the gap is not constant in each place, and it is necessary to form molds of different sizes each time. Since the wall shape of the Yamadome wall is indefinite, it is difficult to reliably prevent the solidified material from leaking and stains easily occur. Since it is necessary to put the solidified material that has solidified when the support work is removed, it takes time and effort. The solidified material adheres to the bolts and other parts of the mountain retaining wall, and cleaning takes time.

The present invention is intended to solve the above-mentioned problems, and it is possible to prevent leakage at the time of placing a solidified material without performing a troublesome assembling work of a mold and a wire mesh.
It is an object of the present invention to provide a method for filling a gap between a mountain retaining wall and an abdominal wall that can easily remove a solidified body that has been solidified upon removal and can prevent the solidifying material from adhering to each part.

Another object of the present invention is to provide a bag body suitable for use in the above packing method.

[0008]

To achieve the above object, the method of the present invention inserts and holds a flexible bag along a gap formed between a wall surface of a mountain retaining wall and a back surface of an abdomen. , The injection port communicating with the inside of the bag is connected to the tip of a hose for injecting a solidifying material made of mortar, concrete or the like, and the solidifying material is injected and filled into the inside of the bag through the hose to form the bag. The body is expanded along the shape of the gap, and the solidifying material is solidified in the expanded state (claim 1).

Further, the bag body used in the method of the present invention is attached along the back surface of the abdomen and has a main body made of a flexible bag body which is flat in the initial state with both ends welded, and the main body portion. One or a plurality of injection ports protruding from one side and communicating with the inside of the main body, and a tubular hanging part that is integrated along the upper edge of the main body and has both longitudinal ends open. And a single pipe penetrating both ends of the suspension portion is fixed on the abdomen by suitable supporting means so that the main body is suspended and supported along the back surface of the abdomen. (Claim 2).

[0010]

According to the above gap filling method, the injection preparation work is completed by inserting the bag body into the gap and connecting the injection hose. By injecting the solidifying material, the bag follows the shape of the gap and expands to fill the gap. Since the solidified body is surrounded by the inside of the bag, there is no direct contact with each part,
When removing the support work, the entire bag can be removed.

Further, the bag according to the present invention is hung and supported by a single pipe, and if the single pipe is fixed at an appropriate position, the bag is positioned and prevented from falling off when the belly is lifted and removed. It

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows the relationship between a mountain retaining wall to which the method of the present invention is applied and an abdomen upset. A plurality of piles 1 made of H-shaped steel are vertically and appropriately spaced along the excavation surface of the ground E. A built-in ridge 2 which is also made of H-shaped steel is horizontally installed inside each pile 1 so as to intersect with the pile 1 and the lower portion thereof is connected to each pile 1 via a bracket 2a. Then, the pile retaining wall 3 is formed between the piles 1 by placing concrete using the dam plate (not shown) dropped between the piles 1 as a formwork.

A gap d is formed between the wall surface of the mountain retaining wall 3 and the bellows 2, and the bag body 4 according to the present invention is inserted into the gap d. The bag body 4 is obtained by processing a flexible sheet such as a polyester resin sheet having a high durability against pulling and tearing, and FIGS.
As shown in the enlarged view of FIG. 2, the tubular main body 5 is welded at both ends 5a and has a flat initial state, and the tubular main body 5 is provided at two positions on both sides of one side of the main body 5 so as to communicate with the inside of the main body. It is provided with a pouring port 6 and a tube-shaped hanging part 7 which is integrated by welding 7a along the upper edge of the main body and is open at both ends in the longitudinal direction. The length of the bag body 4 is set in consideration of the efficiency of mortar injection, etc., and is about 5 m, and the width of each part is set in consideration of the width of the bellows 2 and the hanging height.

An acrylic tape 8 is provided on the outer periphery of each injection port 6, and the hose can be prevented from falling off by tightly binding the tape 8 while the tube end of the mortar injection hose described later is fitted to this. I am trying. Also,
One injection port 6 functions as a mortar injection port, and the other functions as an air vent. Depending on the case, one of them may be connected to a hose and the other port may be vented. After injection, the tip of the mouth is tied with a tape 8 to prevent leakage. Needless to say, the injection port may be provided at three or more places, and the air vent may be provided separately.

A single tube 9 is inserted through the both ends of the hanging portion 7, and the bag 4 is supported by the single tube 9 in a suspended state. As shown in FIG. 1, the supporting structure for the single pipe 9 is a U-shaped bracket 1 provided on an angle plate 10 which is welded in an upright state on the upper part of the back side of the abdomen 2 at an appropriate interval.
1, the single pipe 9 is installed on the bracket 11 so that the single pipe 9 is agitated and positioned and fixed parallel to the upper part of the back surface of the back plate 2.

Next, a gap filling method using the above bag body 4 will be described with reference to FIG.

First, as shown in (a), a single pipe 9 having a hanging portion 7 inserted therein is set on a bracket 11, and the main body portion 5 is raised and formed between the rear surface of the body 2 and the mountain retaining wall 3. Insert into the gap d. Next, the tube tip of the mortar injecting hose 14 connected to the mortar pump 12 installed on the ground portion is fitted into the injecting port 6 and the periphery is tightly bound with the tape 8 to complete the injecting preparation.

Thereafter, the pump 12 is operated and the hose 14
When the valve 15 connected to the tip is opened, the mortar M is injected and filled in the main body portion 5, and the main body portion 5 is expanded by the injection pressure into a shape corresponding to the shape of the gap d as shown in (b).

It should be noted that the load of the mortar M causes the main body portion 5 to hang down while expanding, and the load is initially applied to the entire hanging portion 7, but since the hanging portion 7 extends over the entire length of the main body portion 5, it is sufficient. Supports load with tensile resistance. After that, both side surfaces of the main body portion 5 are agitated and abut on the mountain retaining wall 3 and
By pressing this, the load will be dispersed.

The injection and filling work is completed in consideration of the degree of expansion, or the time when the injection pressure reaches the equilibrium state is determined, or it is detected by a sensor installed separately, and the valve 15 is closed and the pump 12 is stopped. To do.

After that, the filling port 6 is bound with the tape 8 and the mortar M is solidified while the inside is sealed to complete the filling operation. After the mortar M is solidified, the soil water pressure applied to the mountain retaining wall 3 will be angulated up through the solidified body 2 and be surely transmitted to the supporting work side including the ridge 2.

Further, when removing the agitated body 2 at a later date, the bag body 4 filled with the mortar M is also removed at the same time, and the bag body 4 can be removed together with the single pipe 9 after being pulled out.

[0023]

As described in the above embodiments, the method of filling the gap between the mountain retaining wall and the abdomen according to the present invention has the following effects. Since the injection preparation work is completed by inserting the bag into the gap and connecting the injection hose, the preparation work is easier than the conventional work. By injecting the solidifying material, the bag expands following the gap shape,
The gap is completely filled and there is no leakage to the surroundings, so there is no dirt and no waste of material. Since the solidified body is surrounded by the inside of the bag, it does not come into direct contact with each part and can be removed together with the bag, eliminating the need for conventional chipping and cleaning work during removal. Become.

The bag body used in the gap filling method of the present invention has the following advantages. If the single tube is suspended and supported and the single tube is fixed at an appropriate position, the bag body is positioned, so that the setting work can be simplified. Sufficient safety can be ensured because falling off is prevented when the patient is abdominated and removed.

[Brief description of drawings]

FIG. 1 is a cross-sectional perspective view showing a relationship between a mountain retaining wall to which the method of the present invention is applied and an abdominal rising.

FIG. 2 is a perspective view showing a bag and a single tube used in the method of the present invention.

3A and 3B are partial cross-sectional views showing a gap filling procedure using the bag body.

[Explanation of symbols]

 2 Upset 3 Yamadome wall 4 Bag 5 Main body 6 Injection port 9 Single pipe 11 Bracket (single pipe fixing means) 12 Mortar pump 14 Mortar injection hose d Gap M Mortar (solidifying material)

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tatsuichi Kawashima 2-33-16 Ikejiri, Setagaya-ku, Tokyo Taiyo Kogyo Co., Ltd.

Claims (2)

[Claims] 1. A flexible bag is inserted and held along a gap formed between the wall surface of the Yamadome wall and the back surface of the abdomen,
An injection port communicating with the inside of the bag is connected with a tip of a hose for injecting a solidifying material made of mortar, concrete or the like,
By filling and injecting a solidifying material into the bag body through the hose, the bag body is expanded along the shape of the gap, and the solidified material is solidified in the expanded state. How to fill the gap with the wake. 2. A main body made of a flexible bag body which is attached along the back surface of the abdomen and is flat in the initial state with both ends welded, and the main body is projected from one side of the main body. One or a plurality of inlets communicating with the inside of the main body portion and a tubular suspension part that is integrated along the upper edge of the main body part and has both longitudinal ends open are provided, and both ends of the suspension part are penetrated. By fixing the single pipe to the upper part of the abdomen by a proper supporting means, the main body part is suspended and supported along the back surface of the abdomen riser. A bag used to fill the gap between