CN-117071620-B - Waterproof plugging structure for SMW construction method pile enclosure wall and construction method

CN117071620BCN 117071620 BCN117071620 BCN 117071620BCN-117071620-B

Abstract

The embodiment of the application provides a waterproof plugging structure for a SMW construction method pile enclosure wall and a construction method. The waterproof plugging structure comprises a plugging plate, a pressing plate, a first sealing piece and an extrusion mechanism, wherein the inner side of the plugging plate is provided with a grouting groove and a groove, the groove surrounds the grouting groove, the inner side of the plugging plate can be fixed with a retaining wall, the pressing plate is matched with the groove in shape and is positioned in the groove, the first sealing piece is fixed on one side of the pressing plate, facing the retaining wall, the extrusion mechanism is connected with the pressing plate, and the extrusion mechanism is used for driving the pressing plate to move towards the retaining wall to extrude the first sealing piece so as to seal a gap between the plugging plate and the retaining wall after the inner side of the plugging plate is fixed with the retaining wall and the grouting groove is grouted. The embodiment of the application solves the technical problem that the single grouting blocking effect on the leakage position of the SMW construction method pile enclosure wall is poor, so that multiple grouting blocking is needed.

Inventors

DONG JIN
YANG TAO
LI XIN
XIAO HAIFENG
LI LEI
HU CHUANJIA
LIU BAILIN
WANG YONGGUO
YAO DEHUA
Dang Fengrong
MAO ZHONGLIANG
Mo Wanyuan
LI GAOYONG

Assignees

中铁第五勘察设计院集团有限公司

Dates

Publication Date: 20260512
Application Date: 20230822

Claims (8)

1. Waterproof leaking stoppage structure that SMW worker method stake enclosure wall used, its characterized in that includes: the sealing plate (2) is provided with a grouting groove (21) and a groove (22) on the inner side, the groove (22) surrounds the grouting groove (21), and the inner side of the sealing plate can be fixed with the enclosure wall; A pressing plate (221) and a first sealing sheet (222) which are matched with the groove in shape, wherein the pressing plate (221) is positioned in the groove (22), and one side of the pressing plate (221) facing the enclosure wall is used for fixing the first sealing sheet (222); the extrusion mechanism is used for driving the pressing plate (221) to move towards the enclosure wall to extrude the first sealing piece so as to seal a gap between the plugging plate and the enclosure wall after the inner side of the plugging plate (2) is fixed with the enclosure wall and the grouting groove (21) is grouted; the inner part of the plugging plate is provided with a cavity (23), and the outer side of the plugging plate is provided with a first threaded through hole (231) which is communicated with the cavity (23) and the outside, and the bottom of the groove (22) is provided with a first through hole (24) which is communicated with the groove (22) and the cavity (23); The pressing mechanism includes: A slide plate (51) slidably connected to the inner wall of the cavity (23); a connecting rod (52), wherein the connecting rod (52) passes through the first through hole (24) and two ends of the connecting rod are respectively fixed with the sliding plate (51) and the pressing plate (221); A threaded rod (541), wherein the threaded rod (541) passes through the first threaded through hole (231) and has one end abutting against the outer side of the sliding plate (51) and the other end exposed out of the outer side of the plugging plate; the threaded rod (541) is rotated to drive the sliding plate (51), the connecting rod (52) and the pressing plate (221) to move towards the enclosure wall to squeeze the first sealing piece; waterproof leaking stoppage structure still includes: the two adjacent plugging plates (2) are connected through the plug-in fit of the plug block (6) and the slot (25); the insert block is provided with a sealing groove (62), a groove bottom opening of the self-sealing groove (62) is communicated with the cavity to form a third through hole (621) positioned in the insert block and a second through hole (232) communicated with the cavity (23); the waterproof leaking stoppage structure further comprises: A pushing plate (63) and a third sealing piece (631) which are matched with the sealing groove in shape, wherein the pushing plate (63) is positioned in the sealing groove, and the third sealing piece (631) is fixed on one side of the pushing plate facing outwards; a top plate (641) positioned in the third through hole (621) and the second through hole (232), wherein the control side of the top plate (641) extends into the cavity (23), and the side of the top plate opposite to the control side is fixed with the top plate (641); When the sliding plate (51) moves towards the inner side of the plugging plate, the sliding plate (51) approaches to and presses the control side of the top plate to push the top plate (641) to move upwards, so that the pushing plate (63) and the third sealing piece (631) are driven to move away from the cavity (23).
2. The waterproof plugging structure of claim 1, further comprising: the grouting pipe (3) and the exhaust pipe (4) penetrate through the plugging plate, and first end pipe orifices of the grouting pipe (3) and the exhaust pipe (4) are formed at the bottom of the grouting groove (21); a grouting pipe valve (31) is arranged at the second end pipe orifice of the grouting pipe (3); And the exhaust pipe valve (41) is arranged at the second end pipe orifice of the exhaust pipe (4).
3. The waterproof plugging structure of claim 2, wherein the pressing mechanism further comprises: And two ends of the sliding plate spring (53) are respectively fixed with the sliding plate (51) and the outer side of the plugging plate to elastically support the sliding plate (51).
4. A waterproof plugging structure according to claim 3, wherein the slot (25) has a protrusion (251) at the bottom thereof.
5. The waterproof and leak-stopping structure according to claim 3, further comprising: A push plate spring (632), wherein one end of the push plate spring (632) is connected with the bottom of the sealing groove (62), and the other end of the push plate spring is connected with the push plate; And the outer sides of the inserting blocks (6) are respectively fixed with a second sealing sheet (61).
6. The waterproof plugging structure according to claim 5, wherein a control side of the top plate (641) has a slope toward a side of the sliding plate (51), and a side of the sliding plate (51) toward the control side of the top plate (641) has a rounded corner; when the sliding plate (51) moves towards the inner side of the plugging plate, the round angle of the sliding plate (51) approaches to and presses the inclined plane of the control side of the top plate.
7. A method of constructing a waterproof plugging structure according to any one of claims 1 to 6, comprising the steps of: fixing the inner side of the plugging plate (2) with the enclosure wall, and splicing adjacent plugging plates (2); injecting polyurethane plugging agent into the grouting groove (21) in a medium-pressure way; The pressing plate (221) is driven to move towards the enclosure wall to press the first sealing piece so as to seal the gap between the plugging plate and the enclosure wall.
8. The method of claim 7, wherein the step of moving the pressing plate (221) toward the enclosure wall to press the first sealing sheet to seal the gap between the plugging plate and the enclosure wall comprises: and correspondingly, the sliding plate (51) is close to and presses the control side of the top plate to push the top plate (641) to move upwards, so that the push plate (63) and the third sealing plate (631) are driven to move in the direction away from the cavity (23).

Description

Waterproof plugging structure for SMW construction method pile enclosure wall and construction method Technical Field The application relates to the technical field of constructional engineering, in particular to a waterproof plugging structure for a pile enclosure wall by an SMW construction method and a construction method. Background In the construction process of a subway foundation pit, SMW construction method pile guard walls are required to be arranged in the side walls of the foundation pit to realize the guard work of the construction foundation pit where the SMW construction method pile guard walls are located, but the construction operation is inevitably free from quality defects, and the SMW construction method pile guard walls have the risk of water seepage and even sand seepage in the construction stage, so that great threat is caused to the safety of the foundation pit, and therefore leakage on leakage positions on the SMW construction method pile guard walls is required. In the prior art, when the leakage position on the enclosure wall is treated, the leakage position is mostly subjected to grouting plugging in a cement and water glass double-slurry mixing mode, but the plugging effect of plugging the leakage position is poor only in a grouting mode, the solidified double-slurry material is easy to crack due to environmental interference, leakage is easy to occur again, and therefore the leakage position is often required to be subjected to grouting plugging for multiple times, so that the anti-seepage plugging operation of the enclosure wall takes a long time, the integral progress of foundation pit excavation construction is directly influenced, and the adverse effect is further caused on the whole engineering construction period. Therefore, the poor single grouting plugging effect on the leakage position of the SMW construction method pile enclosure wall leads to the need of grouting plugging for multiple times, and the grouting plugging method is a technical problem which needs to be solved by the technicians in the field. The above information disclosed in the background section is only for enhancement of understanding of the background of the application and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Disclosure of Invention The embodiment of the application provides a waterproof plugging structure for an SMW construction method pile enclosure wall and a construction method thereof, which are used for solving the technical problem that a plurality of grouting plugs are required due to poor single grouting plugging effect on the seepage position of the SMW construction method pile enclosure wall. According to a first aspect of the embodiment of the present application, there is provided a waterproof plugging structure for an SMW construction method pile wall, including: The inner side of the plugging plate is provided with a grouting groove and a groove, the groove surrounds the grouting groove, and the inner side of the plugging plate can be fixed with the enclosure wall; The pressing plate is positioned in the groove, and one side of the pressing plate, which faces the enclosure wall, is used for fixing the first sealing plate; The extrusion mechanism is used for driving the pressing plate to move towards the enclosure wall to extrude the first sealing piece so as to seal a gap between the plugging plate and the enclosure wall after the inner side of the plugging plate is fixed with the enclosure wall and the grouting groove is grouted. According to a second aspect of the embodiment of the present application, there is provided a construction method of a waterproof plugging structure, including the steps of: Fixing the inner side of the plugging plate with the enclosure wall, and splicing adjacent plugging plates; Injecting polyurethane plugging agent into the grouting groove in a pressing way; The pressing plate is driven to move towards the enclosure wall to press the first sealing piece so as to seal a gap between the plugging plate and the enclosure wall. By adopting the technical scheme, the embodiment of the application has the following technical effects: After the inner side of the plugging plate is fixed with the enclosure wall and the grouting groove is grouted, the preliminary plugging of the leakage position and the fixation of the plugging plate are realized at the moment. The extrusion mechanism drives the clamp plate to the enclosure wall removal, fixes the first sealing fin at the clamp plate also along with the enclosure wall removes for first sealing fin and enclosure wall extrudees each other, makes first sealing fin by extrusion deformation, makes the liquid of seepage position be difficult for revealing to the outside through the clearance between shutoff board and the enclosure wall, and waterproof leaking stoppage effect of waterproof leaking stoppage structure is better, h