CN103015405A

CN103015405A - Anti-leakage method of underground continuous wall

Info

Publication number: CN103015405A
Application number: CN2012105594420A
Authority: CN
Inventors: 欧孝夺; 潘鑫; 黄绍铿; 蒋华; 樊世波; 李结全
Original assignee: NANNING RUIYU BUILDING MATERIAL TECHNOLOGY Co Ltd; Guangxi University
Current assignee: NANNING RUIYU BUILDING MATERIAL TECHNOLOGY Co Ltd; Guangxi University
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2013-04-03

Abstract

The invention discloses an anti-leakage method of an underground continuous wall, and the method comprises the following steps that a foundation trench is dug in a preset foundation; a rebar cage is manufactured; a geomembrane is distributed on one side of the rebar cage; the rebar cage is hoisted; underground concrete is cast; the geomembrane at a bottom clings to the wall of the foundation trench under the extrusion of the concrete; and along with the continuous casting of the concrete from bottom to top, the geomembrane also continuously clings to the wall of the foundation trench from bottom to top under the extrusion of the concrete. The anti-leakage method of the underground continuous wall is applicable to the construction of the underground continuous wall under complicated hydrogeologic conditions, so that the anti-leakage effect of the underground continuous wall can be greatly improved, and meanwhile the durability of an underground structure is also improved.

Description

A kind of diaphragm wall Antiseep method

Technical field

The present invention relates to underground foundation trench project seepage controlling leakage technology, specifically a kind of diaphragm wall Antiseep method.

Background technology

In the initial stage that diaphragm wall uses, major part is as impervious wall or interim retaining wall, but along with the improvement of the development of Building technology and job practices, machinery, now can be diaphragm wall as the part of works or as agent structure.In the situation that complex geological condition and surrounding building are higher to deformation requirements, diaphragm wall is because be better than other job practicess, so find broad application in construction of underground structure.The leakage problems of the many relevant diaphragm walls of the thing followed becomes increasingly conspicuous, in case body of wall generation seepage, the little engineering that then affects is used, and greatly then will bring massive losses, even cause engineering project disaster.Particularly in current industrial city, the erosion-resisting situations such as antiacid alkali resistant that diaphragm wall faces can not be ignored, so diaphragm wall antiseep problem receives publicity day by day.Current engineering circles has proposed Antiseep method mainly for the joint of diaphragm wall, and the achievement in research of view picture body of wall antiseep aspect has no report.

Summary of the invention

The present invention seeks to propose a kind of Antiseep method that is applicable to diaphragm wall under the Complex Hydrogeological Conditions in order to remedy the deficiencies in the prior art, can improve the antiseep effect of diaphragm wall.

For realizing that the technical scheme that this purpose provides is: a kind of diaphragm wall Antiseep method, be included on the predetermined ground and excavate foundation trench, make reinforcing cage, lifting reinforcing cage and tremie concrete step, further comprising the steps of:

1.1 lay geomembrane in reinforcing cage one side, the two ends of the upper lower limb of described geomembrane and middle part, every edge thereof, depth direction edge are provided with aperture every 5m and also inlay with iron hoop, and hanging with a stainless steel spring at each iron hoop buckles, by the stainless steel spring button geomembrane is connected with reinforcing cage

1.2 the lifting reinforcing cage, tremie concrete along with concrete continuous cast from bottom to top, is buckled in geomembrane on the reinforcing cage under concrete extruding, constantly is adjacent to the foundation trench wall from bottom to top, forms an anti-leakage layer.

The thickness of described geomembrane is 0.5mm, and length is all identical with reinforcing cage with width.

Described geomembrane is the HDPE geomembrane, and form is two cloth, one films.

Describedly lay geomembrane in reinforcing cage one side and refer in reinforcing cage one side near the foundation trench outside.

Outstanding technique effect of the present invention is:

Adopt technical solutions according to the invention, only need to lay geomembrane in reinforcing cage one side and get final product, easy construction, cost is low, and waterproof effect is remarkable, thereby effectively eliminates the potential safety hazard of diaphragm wall seepage.

Description of drawings

Fig. 1 is the geomembrane scheme of installation;

Fig. 2 is that reinforcing cage hangs elevational schematic view;

Fig. 3 is pouring concrete frontal plane schematic diagram;

Fig. 4 is the pouring concrete elevational schematic view;

Fig. 5 is that pouring concrete is finished floor map.

Be labeled as among the figure: 1, geomembrane; 2, stainless steel spring button; 3, iron hoop; 4, reinforcing cage; 5, horizontal reinforcement; 6, vertical reinforcement; 7, steel frame; 8, the reinforcing cage of geomembrane is installed; 9, foundation trench wall; 10, lead wall; 11, do not excavate the soil body; 12, put into the foundation trench of reinforcing cage; 13, conduit; 14, I shape joint; 15, the diaphragm wall of having poured into a mould.

The specific embodiment

Below by specific embodiment technical scheme of the present invention is described further:

With reference to Fig. 1, lay geomembrane 1, its thickness is 0.5mm, length is all identical with reinforcing cage 4 with width, the two ends of upper lower limb and middle part, every edge thereof, depth direction edge are equipped with aperture every 5m, live with iron hoop 3 edge, and hang with a stainless steel spring at each iron hoop 3 and buckle 2;

Make reinforcing cage 4, lay geomembrane 1 in reinforcing cage 4 one sides, the reinforcing bar that only needs during construction each stainless steel spring button 2 on the geomembrane 1 to be buckled in reinforcing cage 4 relevant positions gets final product.

With reference to Fig. 2 and Fig. 3, at predetermined ground excavation foundation trench 9, lifting is laid with the reinforcing cage 4 of geomembrane 1, and reinforcing cage 4 is connected with two ends I shape joint 14.

With reference to Fig. 4 and Fig. 5, carry out underwater concreting by conduit 13, behind the fluid concrete, geomembrane 1 is under concrete extruding, can be adjacent to foundation trench wall 9, along with concrete continuous cast from bottom to top, geomembrane 1 also constantly is adjacent to foundation trench wall 9 from bottom to top under the concrete extruding, finally finish the cast of diaphragm wall.

Claims

1. a diaphragm wall Antiseep method is included on the predetermined ground and excavates foundation trench, makes reinforcing cage, and lifting reinforcing cage and tremie concrete step is characterized in that, and be further comprising the steps of:

2. diaphragm wall Antiseep method according to claim 1 is characterized in that, the thickness of described geomembrane is 0.5mm, and length is all identical with reinforcing cage with width.

3. diaphragm wall Antiseep method according to claim 1 is characterized in that, described geomembrane is the HDPE geomembrane, and form is two cloth, one films.

4. diaphragm wall Antiseep method according to claim 1 is characterized in that, describedly lays geomembrane in reinforcing cage one side and refers in reinforcing cage one side near the foundation trench outside.