CN103031854A

CN103031854A - Method for reducing concrete diffusion of continuous wall

Info

Publication number: CN103031854A
Application number: CN2012105264685A
Authority: CN
Inventors: 苏培奇; 郭军强; 梁修坤; 周育军; 李云锋
Original assignee: GUANGDONG PROV FOUNDATION ENGINEERING Co
Current assignee: GUANGDONG PROV FOUNDATION ENGINEERING Co
Priority date: 2012-12-07
Filing date: 2012-12-07
Publication date: 2013-04-10

Abstract

The invention discloses a method for reducing concrete diffusion of a continuous wall. In the construction process of an underground continuous wall, the method for reducing concrete diffusion of the underground continuous wall comprises the steps of: filling sand bags in a soft interface adjacent to the underground continuous wall; and separating the underground continuous wall from the soft interface by binding iron wire meshes and cloth strips on a bar-mat reinforcement piece. Under the double effect of back pressure provided by the filled sand bags and separation of the concrete by the iron wire meshes and cloth strips, concrete diffusion in the construction process of the underground continuous wall can be effectively reduced. The method provided by the invention is applied to the field of building operations.

Description

A kind of method that reduces the continuous wall concrete diffusion

Technical field

The present invention relates to a kind of construction techniques, particularly relate to a kind of job practices of diaphragm wall.

Background technology

Because diaphragm wall has the advantages such as rigidity is large, water resistance good, safety is high, is widely used in the foundation pit supporting project.And often can run into old basis, old space enclosing structure stake etc. in the construction of diaphragm wall, this will be to old basis, just can formally construct after processing in advance.This type of construction can cause the local expansion of the grooving of diaphragm wall usually; form weak face; also often can run into the hole of soil cave, solution cavity, civil air defense constructions and installations etc.; these cavities or the cave that contains soft filler often have certain buried depth and volume larger; these positions are for building the diaphragm wall underwater concrete; being exactly weak body, is the object that concrete is easily invaded.

If do not carry out special processing with the weak face of diaphragm wall handing-over, easily cause a large amount of concrete wastes, also can affect the quality of diaphragm wall simultaneously.

Summary of the invention

For addressing the above problem, the invention provides a kind of method that can effectively reduce concrete diffusion in the construction of diaphragm wall process.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of method that reduces the continuous wall concrete diffusion may further comprise the steps:

1), verify and at the weak interface of the diaphragm wall built handing-over, and clear and definite or estimate the scope at weak interface;

2), the position tie wire net adjacent with weak interface on the reinforced mesh of diaphragm wall;

3), colligation cloth on the panel of wire gauze;

4), in weak interface, fill out and establish sand pocket;

5), at the construction location placing of concrete of diaphragm wall.

Be further used as the improvement of technical solution of the present invention, in the step 4), behind the location of the hoisting steel mesh piece on the weak interface of basseting, fill out again and establish sand pocket.

Be further used as the improvement of technical solution of the present invention, in the step 4), carry out again the lifting of reinforced mesh buried in the perforate of the weak interface side position of diaphragm wall bottom elder generation, in weak interface, throw in sand pocket at last.

Beneficial effect of the present invention: the method that reduces the concrete diffusion in this underground construction of diaphragm wall process is filled sand pocket in the weak interface adjacent with diaphragm wall, and by tie wire net and cloth on reinforced mesh with the isolation of diaphragm wall and weak interface, provide under back-pressure and wire gauze and the cloth double action to the concrete isolation at the sand pocket of filling, can effectively reduce concrete diffusion in the construction of diaphragm wall process.

Description of drawings

The invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is first embodiment of the invention implementation process structural plan schematic diagram;

Fig. 2 is second embodiment of the invention implementation process structural profile schematic diagram.

The specific embodiment

With reference to Fig. 1, Fig. 2, the present invention is a kind of method that reduces the continuous wall concrete diffusion, it is characterized in that, may further comprise the steps:

1), verify and at the weak interface 2 of diaphragm wall 1 handing-over of building, and clear and definite or estimate the scope at described weak interface 2;

2), the position tie wire net 5 adjacent with weak interface 2 on the reinforced mesh 3 of diaphragm wall 1;

3), colligation cloth 6 on the panel of described wire gauze 5;

4), in described weak interface 2, fill out and establish sand pocket 4;

5), at the construction location placing of concrete of described diaphragm wall 1.

Reduce the method for concrete diffusion in this underground construction of diaphragm wall process at the weak interface adjacent with diaphragm wall 2 interior filling sand pockets 4, and by tie wire net 5 on reinforced mesh 3 and cloth 6 with

diaphragm wall

1 and 2 isolation of weak interface, provide at the sand pocket 4 of filling under the double action of back-pressure and

wire gauze

5 and 6 pairs of concrete isolation of cloth, can effectively reduce concrete diffusion in the construction of diaphragm wall process.

As the preferred embodiment of the present invention, in the step 4), behind the reinforced mesh 3 lifting location on the weak interface 2 of basseting, fill out again and establish sand pocket 4.

As the preferred embodiment of the present invention, in the step 4), in the perforate of the 2 side positions, weak interface of diaphragm wall 1 bottom elder generation, carry out again the lifting of reinforced mesh 3, at last at weak interface 2 interior input sand pockets 4 buried.

The position tie wire net 5 of determining at the reinforced mesh 3 that forms diaphragm wall 1, and on the surface layer of wire gauze 5, colligation cloth 6, wire gauze 5 and cloth 6 act as exosmosing of isolated concrete aggregate, slurries.

Cloth 6 adopts colour bar cloth in this working of an invention process.

In work progress of the present invention, for the weak interface 2 of basseting, behind the reinforced mesh 3 lifting location that form diaphragm wall 1, can be at emptying aperture position backfill sand pocket 4.

For the weak interface 2 that certain buried depth is arranged, in advance in diaphragm wall 1 other perforate, behind the reinforced mesh 3 lifting location that form diaphragm wall 1, throw in sand pocket 4 again.

Among the present invention, effect when needing wire gauze 5, cloth 6, sand pocket 4, wire gauze 5 and cloth 6 act as exosmosing of isolated concrete aggregate, slurries, the setting of sand pocket 4 then is in order to offset concrete injection pressure.

The three is indispensable, and such as not tie wire net 5, cloth 6, then concrete can wrap up sand pocket 4 and condenses, and increases the difficulty of subsequent treatment, and sand pocket 4 can be close to reinforced mesh 3, easily causes the dew muscle.And not backfill sand pocket 4 carries out back-pressure, can cause external drum equally under the pressure-acting of filling concrete.

Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite of spirit of the present invention, the modification that these are equal to or replacement all are included in the application's claim limited range.

Claims

1. a method that reduces the continuous wall concrete diffusion is characterized in that, may further comprise the steps:

1), verify and at the weak interface of the diaphragm wall built handing-over, and clear and definite or estimate the scope at described weak interface;

2), the position tie wire net adjacent with weak interface on the reinforced mesh of described diaphragm wall;

3), colligation cloth on the panel of described wire gauze;

4), in described weak interface, fill out and establish sand pocket;

5), at the construction location placing of concrete of described diaphragm wall.

2. the method for minimizing continuous wall concrete diffusion according to claim 1 is characterized in that: in the described step 4), behind the location of the hoisting steel mesh piece on the weak interface of basseting, fill out and establish sand pocket.

3. the method for minimizing continuous wall concrete according to claim 1 diffusion, it is characterized in that: in the described step 4), in buried weak interface side position elder generation perforate in described diaphragm wall bottom, carry out again the lifting of described reinforced mesh, in described weak interface, throw in sand pocket at last.