CN-224213379-U - Post-pouring strip decompression sealing structure

CN224213379UCN 224213379 UCN224213379 UCN 224213379UCN-224213379-U

Abstract

The utility model discloses a post-pouring belt decompression sealing structure which comprises a post-pouring belt cushion layer, and further comprises a sealing structure for sealing the post-pouring belt cushion layer, wherein the post-pouring belt cushion layer comprises a bottom layer and a bottom plate concrete layer, the sealing structure comprises a notch, a water collecting well and a steel pipe, the water collecting well is arranged at the bottom of the post-pouring belt cushion layer and corresponds to the notch, a graded sand gravel layer is filled in the water collecting well, the steel pipe is buried in the graded sand gravel layer, a plurality of groups of holes are formed in the outer wall of a section of the steel pipe, which is positioned in the graded sand gravel layer, at equal intervals, the upper end of the steel pipe extends to the position above the bottom plate concrete layer, a flange is arranged at the upper end of the steel pipe and used for connecting a water reducing pipe, and a valve is arranged on the water reducing pipe. By arranging the closed structure, the influence of groundwater on the concrete mixing proportion in the closing process of the post-pouring belt is greatly reduced, the construction quality of the concrete post-pouring belt is ensured, and the water seepage phenomenon is reduced.

Inventors

XUE JINMING
ZHAO PEICHUAN
LI GUO
Ma Fengcheng
QU XIN
JIANG XIANHONG

Assignees

中建海峡建设发展有限公司

Dates

Publication Date: 20260508
Application Date: 20250506

Claims (5)

1. A post-cast strip decompression enclosure structure, comprising: post-cast strip cushion layer; The post-pouring belt cushion layer comprises a bottom layer (1) and a bottom plate concrete layer (7), wherein the bottom layer (1) is positioned at the bottom of the bottom plate concrete layer (7); the post-pouring belt cushion layer is arranged on the post-pouring belt cushion layer; the closed structure comprises a notch (10), a water collecting well (2) and a steel pipe (4), wherein the notch (10) penetrates through the post-pouring belt cushion, the water collecting well (2) is positioned at the bottom of the post-pouring belt cushion and corresponds to the notch (10), the water collecting well (2) is filled with a graded sand gravel layer (3), the steel pipe (4) is buried in the graded sand gravel layer (3) positioned in the water collecting well (2), and a filling layer is arranged in the notch (10) to bury the steel pipe (4); The steel pipe (4) is located one section outer wall equidistance in the grading gravel layer (3) and has seted up multiunit hole (5), and steel pipe (4) upper end extends to bottom plate concrete layer (7) top, and flange (11) are installed to steel pipe (4) upper end and are used for connecting downcomer (12), install valve (13) on downcomer (12).
2. The post-pouring strip decompression closed structure according to claim 1, wherein the bottom layer (1) comprises a C15 plain concrete cushion layer (101) and a building waterproof layer (102), and the C15 plain concrete cushion layer (101) is arranged on the upper side and the lower side of the building waterproof layer (102).
3. The post-pouring strip pressure-reducing sealing structure according to claim 1, wherein geotextile is wound on the outer wall of a section of the outer wall of the steel pipe (4) positioned in the graded gravel layer (3) and is used for preventing external sediment from entering holes (5) on the outer wall of the steel pipe (4) to cause blockage.
4. The post-cast strip decompression sealing structure according to claim 1, wherein the filling layer comprises a permeable concrete layer (6) and a compensating shrinkage concrete layer (14), the permeable concrete layer (6) is positioned right above the water collecting well (2) and is flush with the bottom layer (1), and the compensating shrinkage concrete layer (14) is positioned right above the permeable concrete layer (6) and is flush with the bottom plate concrete layer (7).
5. The post-pouring strip decompression sealing structure according to claim 1, wherein a water stop steel plate (8) is arranged in the middle of the inner wall of the gap (10) located in the bottom plate concrete layer (7), and a water stop sheet (9) is arranged on the steel pipe (4), and the water stop sheet (9) is flush with the water stop steel plate (8).

Description

Post-pouring strip decompression sealing structure Technical Field The utility model relates to the technical field of building construction, in particular to a post-pouring strip decompression sealing structure. Background With the sustainable development of the social economy and the continuous acceleration of the urban process in China, the urban construction land is reduced year by year, and the development and utilization of the underground space are increased to become a necessary trend. Because of the continuous increase of the burial depth and scale of the underground structure, the influence of underground water on the construction of the building is continuously increased in the construction process, and the problem of closing the post-cast strip of the underground part becomes one of the important concerns in the field of buildings. The application scene of the underground space is very wide, including underground garage, civil air defense engineering, urban subway, underground market, etc. In order to ensure the use function and construction quality of the underground space, the sealing quality of the post-cast strip directly influences the use function of the underground space, the safety of the structure can be influenced, and once the post-cast strip occurs, the engineering quality can be negatively influenced. The problem of sealing the post-cast strip of the underground structure is studied, so that the post-cast strip has important practical value for engineering construction, and the problems of water seepage of basements, water seepage of the post-cast strip and the like occur frequently in the whole country at present, wherein a considerable number of accidents are caused by the fact that concrete cement paste is lost and a concrete structure is not compact when the post-cast strip is poured due to the fact that the pressure of underground water is high during sealing, the adhesiveness between the post-cast concrete and the pre-cast concrete is insufficient, the design strength is not achieved, namely the pressure of the underground water is born, the pressure of the underground water is too high (the underground water level rises due to the weather of heavy rain and the like), and therefore the post-cast strip decompression sealing structure is needed. Disclosure of utility model The utility model aims to provide a post-pouring belt decompression sealing structure, which can be used as a water reducing and draining device during construction, an auxiliary pressure reducing device for sealing the post-pouring belt, a pressure reducing device for leakage treatment and a pressure releasing device during use through arranging the sealing structure, so that the influence of groundwater on the concrete mixing ratio during sealing the post-pouring belt is greatly reduced, the construction quality of the concrete post-pouring belt is ensured, and the water seepage phenomenon is reduced, thereby solving the problems in the background art. In order to achieve the above purpose, the present utility model provides the following technical solutions: A post-cast strip decompression enclosure structure comprising: post-cast strip cushion layer; The post-pouring belt cushion layer comprises a bottom layer and a bottom plate concrete layer, and the bottom layer is positioned at the bottom of the bottom plate concrete layer; the post-pouring belt cushion layer is arranged on the post-pouring belt cushion layer; The closed structure comprises a notch, a water collecting well and a steel pipe, wherein the notch penetrates through the post-pouring belt cushion layer, the water collecting well is positioned at the bottom of the post-pouring belt cushion layer and corresponds to the notch, the water collecting well is filled with a graded sand gravel layer, the steel pipe is buried in the graded sand gravel layer, and a filling layer is arranged in the notch to embed the steel pipe; The steel pipe is located the multiunit hole has been seted up to the one section outer wall equidistance in grading sand gravel layer, and the steel pipe upper end extends to bottom plate concrete layer top, and installs the flange in the steel pipe upper end and be used for connecting the downcomer, installs the valve on the downcomer. Preferably, the bottom layer comprises a C15 plain concrete cushion layer and a building waterproof layer, and the upper side and the lower side of the building waterproof layer are respectively provided with the C15 plain concrete cushion layer. Preferably, geotextile is wound on the outer wall of one section of the outer wall of the graded sand gravel layer, and the geotextile is used for preventing external sediment from entering holes on the outer wall of the steel pipe to cause blockage. Preferably, the filling layer comprises a permeable concrete layer and a compensating shrinkage concrete layer, wherein the permeable concrete layer is positioned right above the water collecting well and is