CN112609754A

CN112609754A - Basement shear wall leakage blocking method and structure

Info

Publication number: CN112609754A
Application number: CN202011486594.3A
Authority: CN
Inventors: 罗天洪; 冯学瑞; 晏克珍; 谢明康
Original assignee: Guizhou Investment And Construction Co ltd; China Construction Fourth Engineering Division Corp Ltd
Current assignee: Guizhou Investment And Construction Co ltd; China Construction Fourth Engineering Division Corp Ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-04-06

Abstract

The invention discloses a basement shear wall leakage stopping method and a basement shear wall leakage stopping structure, wherein the basement shear wall leakage stopping structure comprises a shear wall, a chiseled hole is formed in a seepage hole of the shear wall, a drainage tube is arranged in the chiseled hole, a filter screen is bound at one end of the drainage tube, a water stopping valve is arranged at the other end of the drainage tube, a rubber water stopping ring is additionally arranged on the outer wall of the drainage tube, one end of the drainage tube, which is bound with the filter screen, is inserted into the seepage hole until the drainage tube is contacted with backfill soil on the outer side of the shear wall, and first concrete and second concrete are sequentially poured in the chiseled hole from inside to outside. The invention adopts the blocking and draining combination to the leakage points, fully utilizes the high strength and the compactness of the concrete to restore the self-waterproof function, combines the blocking of the drainage pressure relief pipe to form the double-safety measure of leakage treatment, meets the design performance and the waterproof requirement, has the characteristics of low cost, simple and convenient implementation, quality guarantee and the like, and has better applicability to the leakage treatment of the common basement shear wall.

Description

Basement shear wall leakage blocking method and structure

Technical Field

The invention relates to a basement shear wall leakage blocking method and a basement shear wall leakage blocking structure, and belongs to the technical field of building construction.

Background

Basement leakage is a problem that more or less occurs in the construction of each building project, and the main reasons are as follows: the design arrangement of reinforcement is unreasonable, geological survey limitation leads to subsiding inhomogeneous, concrete raw material and mix proportion deviation, construction are not normal pour the difficulty if the reinforcing bar interval is little and vibrate uncompacted, dog hole etc. and all probably lead to the defect of concrete quality to cause the percolating water, and especially high water level basement performance is more outstanding, for satisfying design and later stage operation requirement, must carry out the seepage and handle. The method of grouting and plugging is selected conventionally for repairing. The grouting and plugging is to inject water soluble polyurethane chemical grouting material into concrete cracks by using mechanical high pressure power (high pressure filling machine), when the grout meets the water in the concrete cracks, the grout can be rapidly dispersed, emulsified, expanded and solidified, so that all the cracks of the concrete are filled with the solidified elastomer, and water flow is completely plugged outside the concrete structure, thereby achieving the purpose of water stopping and plugging. However, for the leakage of large leakage, non-compact concrete, holes and the like, high-pressure grouting is time-consuming and labor-consuming, and the effect is not good.

Disclosure of Invention

The invention aims to provide a basement shear wall leakage stopping method and structure which are low in cost, convenient to construct and good in leakage stopping effect, so as to overcome the defects in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a basement shear wall leakage stopping method and a structure thereof comprise the following steps:

s1, firstly finding out a leakage point with flowing water or dripping water on the shear wall, chiseling the wall body of the flowing water part, chiseling all the non-compact concrete around the seepage hole, and cleaning;

s2, installing a drainage tube in the chiseled hole, wrapping one end of the drainage tube by using a filter screen, installing a water shutoff valve at the other end of the drainage tube, additionally arranging a rubber water stop ring on the outer wall of the drainage tube, and inserting the end of the drainage tube wrapped with the filter screen into the seepage hole until the drainage tube is contacted with backfill soil outside the shear wall;

s3, after the drainage tube is installed, erecting a formwork at a position which is more than or equal to 50mm away from the inner side surface d of the shear wall, pouring first concrete, vibrating and compacting, performing wet water curing for not less than 14 days after the first concrete pouring, and keeping the water shutoff valve in an open pressure relief state all the time at this stage;

and S4, when the first concrete pouring strength reaches 80%, closing the water shutoff valve, observing the leakage condition, if the leakage still exists at the joint of the first concrete and the shear wall, adopting conventional grouting treatment, performing secondary formwork support and pouring the second concrete after no leakage exists, closing the water shutoff valve before the second concrete pouring, and performing wet water curing for not less than 14 days after pouring.

In the method, the first concrete and the second concrete are both cast by fine stone expansive concrete which is higher than the shear wall concrete by one grade, and the interface agent is coated at the joint of the new concrete and the old concrete before casting.

According to the method, before the first concrete pouring, the junction of the drainage tube and the seepage hole is blocked by adopting the blocking king, so that flowing water can flow out of the drainage tube, the later concrete filling is carried out under the anhydrous condition, and the concrete pouring quality is ensured.

Meanwhile, the invention also provides a basement shear wall leakage stopping structure which comprises a shear wall, wherein a chiseled hole is formed in the seepage hole of the shear wall, a drainage tube is arranged in the chiseled hole, one end of the drainage tube is wrapped with a filter screen, the other end of the drainage tube is provided with a water stopping valve, a rubber water stopping ring is additionally arranged on the outer wall of the drainage tube, one end of the drainage tube wrapped with the filter screen is inserted into the seepage hole until the drainage tube is contacted with backfill soil on the outer side of the shear wall, and first concrete and second concrete are sequentially poured in the chiseled hole from inside to outside.

Furthermore, the junction of the drainage tube and the seepage hole is filled with a leakage stopping king.

Furthermore, the inner end of the chiseling hole is of a horn-shaped structure.

Compared with the prior art, the invention has the following beneficial effects: the invention adopts the blocking and draining combination to the leakage points, fully utilizes the high strength and the compactness of the concrete to restore the self-waterproof function, combines the blocking of the drainage pressure relief pipe to form the double-safety measure of leakage treatment, meets the design performance and the waterproof requirement, has the characteristics of low cost, simple and convenient implementation, quality guarantee and the like, and has better applicability to the leakage treatment of the common basement shear wall.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Description of reference numerals: 1-a shear wall; 2-second concrete; 3-a drainage tube; 4-water shutoff valve; 5-buckling; 6-first concrete; 7-a filter screen; 8-rubber water stop ring; 9-horn structure; 10-removing the hole; 11-stopping leak king.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a basement shear wall leaking stoppage structure comprises a shear wall 1, a chiseling hole 10 is formed in a seepage hole of the shear wall 1, a drainage tube 3 is installed in the chiseling hole 10, a filter screen 7 is bound at one end of the drainage tube 3, a water plugging valve 4 is installed at the other end of the drainage tube 3, a rubber water stop ring 8 is additionally arranged on the outer wall of the drainage tube 3, one end of the drainage tube 3, bound with the filter screen 7, is inserted into the seepage hole until being in contact with backfill 5 on the outer side of the shear wall 1, and first concrete 6 and second concrete 2 are sequentially poured into the chiseling hole 10 from inside to outside. The joint of the drainage tube 3 and the seepage hole is filled with a leakage stoppage king 11. The inner end of the chiseling hole 10 is of a horn-shaped structure 9, so that the plugging king 11 can be conveniently filled for plugging.

The embodiment of the invention comprises the following steps: the basement degree of depth 13.6 meters is in the sand bed geology, and the higher and perennial reserves of groundwater level are abundant, set up the basement three-layer, and the basement is outer wall thickness 300 ~ 400mm, and the girth 650m sets up many post-settlement casting areas, and it is more to set up the hidden beam reinforcing bar in the shear force wall 1, has to pour the closely knit difficulty of vibrating, and the water repellent is handled the degree of difficulty greatly, especially high water level basement seepage is difficult to avoid completely after backfilling the outstanding characteristics of seepage such as.

In view of the above situation, when the basement shear wall plugging structure is used for plugging a basement shear wall, the following steps can be adopted:

s1, firstly finding out a leakage point with flowing water or dripping water on the shear wall 1, chiseling the wall body at the flowing water part, chiseling all the non-compact concrete at the periphery of a seepage hole, and cleaning up the leakage water, which is generally caused by the non-compact concrete pouring and the hole;

s2, installing the drainage tube 3 in the chiseled hole 10, wrapping one end of the drainage tube 3 by using a filter screen 7, installing a water plugging valve 4 at the other end of the drainage tube 3, meanwhile, additionally arranging a rubber water stop ring 8 on the outer wall of the drainage tube 3, and then inserting one end of the drainage tube 3 wrapped with the filter screen 7 into the seepage hole until the end is contacted with backfill 5 outside the shear wall 1; finally, the junction of the drainage tube 3 and the seepage hole is blocked by adopting a leakage blocking king 11, so that flowing water can flow out of the drainage tube 3, concrete is filled in the later period under a waterless condition, and the pouring quality of the concrete is ensured;

s3, after the drainage tube 3 is installed, erecting a formwork at a position which is more than or equal to 50mm away from the inner side surface d of the shear wall 1, pouring the concrete 6 for the first time, vibrating and compacting, performing wet water curing for not less than 14 days after the concrete 6 is poured for the first time, and keeping the water shutoff valve 4 in an open pressure relief state all the time at this stage;

and S4, when the first concrete 6 pouring strength reaches 80%, closing the water shutoff valve 4, observing the leakage condition, if the leakage still exists at the joint of the first concrete 6 and the shear wall 1, adopting conventional grouting treatment, performing second formwork support and pouring the second concrete 2 after no leakage exists, closing the water shutoff valve 4 before the second concrete 2 pouring, and performing wet water maintenance for no less than 14 days after pouring.

The first concrete 6 and the second concrete 2 are both cast by fine stone expansive concrete which is higher than the shear wall 1 concrete by one grade, and the interface agent is coated at the joint of the new concrete and the old concrete before casting.

Claims

1. A basement shear wall leakage stopping method is characterized by comprising the following steps:

s1, firstly finding out a leakage point with flowing water or dripping water on the shear wall (1), chiseling the wall body of the flowing water part, chiseling all the non-compact concrete around the seepage hole, and cleaning;

s2, installing a drainage tube (3) in the chiseled hole (10), wrapping one end of the drainage tube (3) by using a filter screen (7), installing a water plugging valve (4) at the other end of the drainage tube, additionally arranging a rubber water stop ring (8) on the outer wall of the drainage tube (3), and inserting one end of the drainage tube (3) wrapped with the filter screen (7) into the seepage hole until the drainage tube is contacted with backfill soil (5) on the outer side of the shear wall (1);

s3, after the drainage tube (3) is installed, erecting a formwork at a position which is more than or equal to 50mm away from the inner side surface d of the shear wall (1) to pour concrete (6) for the first time and vibrating the concrete to be compact, performing wet water curing for not less than 14 days after the concrete (6) is poured for the first time, and keeping the water shutoff valve (4) in an open pressure relief state all the time at this stage;

and S4, closing the water shutoff valve (4) after the first concrete (6) pouring strength reaches 80%, observing the leakage condition, if the leakage still exists at the joint of the first concrete (6) and the shear wall (1), adopting conventional grouting treatment until the leakage does not exist, then performing second formwork support and pouring the second concrete (2), closing the water shutoff valve (4) before the second concrete (2) pouring, and performing wet water curing for not less than 14 days after pouring.

2. The basement shear wall leakage stopping method according to claim 1, characterized in that: the first concrete (6) and the second concrete (2) are both cast by fine stone expansion concrete which is higher than the concrete of the shear wall (1) by one grade, and an interface agent is coated at the joint of the new concrete and the old concrete before casting.

3. The basement shear wall leakage stopping method according to claim 1, characterized in that: before the first concrete (6) is poured, the junction of the drainage tube (3) and the seepage hole is blocked by a leakage blocking king (11).

4. The utility model provides a basement shear force wall leaking stoppage structure, includes shear force wall (1), its characterized in that: the hole (10) have been seted up at the seepage hole department of shear force wall (1), install drainage tube (3) in the hole (10) are removed in the chisel, wrapped up filter screen (7) in the one end of drainage tube (3), water shutoff valve (4) are installed to the other end, add simultaneously on the outer wall of drainage tube (3) and establish rubber seal ring (8), during drainage tube (3) wrapped the one end of filter screen (7) and inserted the seepage hole, until with backfill soil (5) contact in shear force wall (1) outside, pour first concrete (6) and second concrete (2) from the lining to outside in proper order in the hole (10) are removed in the chisel.

5. The basement shear wall leaking stoppage structure of claim 4, characterized in that: the joint of the drainage tube (3) and the seepage hole is filled with a leakage stopping king (11).

6. The basement shear wall leaking stoppage structure of claim 4, characterized in that: the inner end of the chiseling hole (10) is of a horn-shaped structure (9).