JP3022736B2 - Bag and method of filling gap between ridge and wall using this bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention, mortar in the gap between the raised pile Tomekabe and abdomen, with filling the solidifying material such as concrete for packing the said gap suitable bag, and the bag
The present invention relates to a method of filling a gap between a mountain retaining wall and a belly using a body .

[0002]

2. Description of the Related Art In a relatively deep digging work,
H-shaped steel or I-shaped steel columns or steel sheet piles are erected along each wall face of the facing retaining wall, and a belly is laid horizontally on the inside of the steel pillar or steel sheet pile. It is common to cross the beams perpendicularly to this, and to apply the soil water pressure acting from the ground around each of the facing retaining walls, the steel beams or the sheet piles, It has a structure that can withstand the soil water pressure by supporting it in tension.

[0003] Incidentally, since the wall surface of this retaining wall is actually irregular, an irregular-shaped gap is often opened between the wall surface of the retaining wall and the bulge. Conventionally, the support of the water pressure becomes unstable. Conventionally, a wedge called a camber is driven into a gap formed between the retaining wall and the belly, or a solidifying material such as mortar or concrete is poured and filled. The solidified body is used to reliably support the soil pressure acting on the retaining wall through the solidified body.

[0004]

However, if the wedge has such a large gap that the wedge cannot cope with it, it is necessary to attach a contact form to the lower part of the upset to cast and solidify the solidified material. Since it is necessary to lay a wire mesh and take measures to prevent the solidified material from leaking, the following problems arise.

[0005] The assembling work of the mold must be performed in a narrow place, which is troublesome and poor in workability. The width dimension of the gap is not constant at each location, and a mold having a different size must be formed each time. Since the wall shape of the retaining wall is indefinite, it is difficult to reliably prevent the leakage of the solidified material, and dirt is easily generated. It is necessary to peel off the solidified material that was solidified when the shoring was removed, which is troublesome. The solidified material adheres to bolts and other parts of the retaining wall, and it takes time to clean.

The present invention has been made to solve the above problems, and it is possible to prevent leakage at the time of placing a solidified material without performing a troublesome assembling work of a formwork or a wire mesh.
At the time of removal, it is possible to easily remove the solidified compact and to prevent the adhesion of the solidifying material to each part .
And how to fill the gap between the retaining wall and the belly using this bag
It is intended to provide law .

[0007]

[0008]

In order to achieve the above-mentioned object, the present invention is provided along the back of a belly,
In the initial state where both ends are welded, a flat flexible bag
A main body, and a main body protruding from one side of the main body.
One or more inlets communicating with the inside, and
Integrated along the upper edge and open at both longitudinal ends
And a tube-shaped suspension, penetrating both ends of the suspension
A single tube on the belly by appropriate support means.
The main body along the back of the belly
It characterized Rukoto such so as to be suspended supporting Te (claim 1).

The method according to the present invention is characterized in that, along the gap formed between the wall surface of the retaining wall and the back surface of the belly ,
The bag body described above is inserted and held, and the tip of a hose for injecting a solidified material made of mortar, concrete, or the like is connected to an injection port communicating with the inside of the bag body, and the solidified material is inserted into the bag body through the hose. By filling and injecting, the bag body is expanded along the gap shape, and the solidified material is solidified in the expanded state (claim 2).

[0010]

According to the bag body of the present invention, the single tube is suspended and supported.
If the single tube is fixed at the appropriate position, the position of the bag
Decision made, also prevents falling off when removing a belly
Is done.

Also , according to the gap filling method according to the present invention,
For example, insert the bag into the gap and connect the injection hose.
This completes the injection preparation work. Bag body by solidification material injection
Expands following the gap shape and fills the gap. The consolidated body
Because it is surrounded by the inside of the bag,
Do not touch it and remove the bag when removing the shoring.
Can be

[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 a relationship between a retaining wall to which the method of the present invention is applied and a bulge. A plurality of piles 1 made of H-section steel are vertically and appropriately spaced along an excavation surface of a ground pile E. The piles 1 are erected, and inside each of the piles 1, a bulge 2, which is also made of H-shaped steel, is laid transversely, and the lower part thereof is connected to each of the piles 1 via a bracket 2 a. And concrete is cast using a not-shown weir plate dropped between the piles 1 as a formwork, so that the retaining wall 3 is formed between the piles 1.

A gap d is formed between the wall of the retaining wall 3 and the belly 2 and the bag 4 according to the present invention is inserted into the gap d. The bag 4 is obtained by processing a flexible sheet such as a polyester resin sheet having high durability against pulling and tearing.
As shown in the enlarged view, a tubular main body 5 having both ends welded 5a is initially flat, and a tubular main body 5 protruding from two sides of one side of the main body 5 and communicating with the inside of the main body. The injection port 6 is provided with a tube-shaped hanging part 7 which is integrated by welding 7a along the upper edge of the main body and is opened at both ends in the longitudinal direction. The length of the bag body 4 is set in consideration of the efficiency of mortar injection and the like, and is about 5 m, and the width of each part is set in consideration of the width of the belly 2 and the hanging height.

Acrylic tape 8 is provided on the outer periphery of each injection port 6, and it is possible to prevent the hose from dropping off by tightening the tape 8 in a state in which a tube tip of a mortar injection hose described later is fitted thereto. Like that. Also,
One inlet 6 functions for mortar injection, and the other functions as air release. In some cases, one of them may be connected to a hose and the other may be used for air release. After injection, the mouth 8 is tied up with a tape 8 to prevent leakage. In addition, it is needless to say that three or more injection ports may be provided and an air vent may be separately provided.

A single tube 9 is inserted through 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 support structure for the single tube 9 is a U-shaped bracket 1 provided on an angle plate 10 which is welded to the upper part on the rear side of the belly 2 at an appropriate distance and is erected.
By installing the single tube 9 on the bracket 11, the single tube 9 is positioned and fixed in parallel to the upper part of the back of the belly 2.

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

First, as shown in FIG. 1A, a single pipe 9 into which a hanging portion 7 is inserted is set on a bracket 11, and a main body 5 is erected and formed between the back of 2 and the retaining wall 3. Insert into gap d. Then, the tip of the mortar injection hose 14 connected to the mortar pump 12 installed on the ground is fitted into the injection port 6 and the periphery is tied up with the tape 8 to complete the injection 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 into the main body 5, and the main body 5 expands to a shape corresponding to the shape of the gap d as shown in FIG.

The mortar M causes the main body 5 to hang down while expanding, and the load is initially applied to the entire hanging portion 7. However, since the hanging portion 7 extends over the entire length of the main body 5, it is sufficient. Support the load with tensile resistance. After that, both side surfaces of the main body 5 abut on the belly 2 and the retaining wall 3,
Pressing this disperses the load.

The filling and filling operation is completed in consideration of the degree of expansion, or when the filling pressure reaches an equilibrium state, or is detected by a sensor installed separately, and the valve 15 is closed and the pump 12 is stopped. I do.

Thereafter, the filling port 6 is tied with a tape 8 and the mortar M is consolidated while the inside is sealed, thereby completing the filling operation. After consolidation of the mortar M, the soil water pressure applied to the retaining wall 3 is reliably transmitted to the belly 2 and the support side including the bulge 2 through the consolidated body.

Further, when the belly 2 is removed at a later date, the bag 4 filled with the mortar M is also removed at the same time, and the bag 4 can be removed after the single tube 9 is pulled out.

[0023]

As described above, the bag according to the present invention has the following advantages. Hang on a single tube
If it is supported below and the single tube is fixed in the proper position, the bag
Positioning can be performed, simplifying the setting operation.
You. It also prevents falling off when removing the belly
Therefore, sufficient safety can be secured.

Further, the retaining wall according to the present invention and the belly upright are provided.
According to the gap filling method, the following effects can be obtained. Bag
Into the gap and connect the injection hose.
Preparation work is completed, so preparation work is
The work is simple. The bag body has a gap shape by solidification material injection
Expands to completely close the gap, and leaks to the surrounding area.
There is no dirt and no waste of material. Solid
Since the unity is surrounded by the inside of the bag,
It can be removed together with the bag without direct contact.
Eliminates the need for conventional scraping and cleaning work during removal
Becomes

[Brief description of the drawings]

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

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

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

[Explanation of symbols]

 2 Belly upset 3 Mountain retaining wall 4 Bag 5 Main body 6 Inlet 9 Single pipe 11 Bracket (single pipe fixing means) 12 Mortar pump 14 Mortar injection hose d Gap M Mortar (solidified material)

Continuation of the front page (72) Inventor Tatsuichi Kawashima 2-33-16 Ikejiri, Setagaya-ku, Tokyo Taiyo Kogyo Co., Ltd. (56) References JP-A-3-36317 (JP, A) JP-A-6-108469 (JP, A) JP-A-6-263154 (JP, A) JP-A-60-169337 (JP, U) JP-B 3-78454 (JP, B2) (58) Fields investigated (Int. Cl. ⁷⁾ , DB name) E02D 17/04

Claims (2)

(57) [Claims] 1. A main body comprising a flat flexible bag in an initial state in which both ends are welded together along a back surface of a belly and a projecting part protruding from one side of the main body. One or more inlets communicating with the inside of the main body, and a tube-shaped hanging portion integrated along the upper edge of the main body and open at both ends in the longitudinal direction, penetrating both ends of the hanging portion The main body portion is suspended and supported along the back of the belly upright by fixing the single pipe to the belly upset by a suitable support means. Bag used to close the gap with 2. The bag according to claim 1, which is inserted and held along a gap formed between a wall surface of the mountain retaining wall and a back surface of the belly, and an injection port communicating with the inside of the bag, By connecting the tip of a hose for injecting a solidified material made of mortar, concrete, or the like, and injecting and filling the solidified material into the inside of the bag through the hose, the bag is expanded along the gap shape, and the expanded state is maintained. A method of filling a gap between a retaining wall and a belly by solidifying the solidified material.