CN111894020A - Underground continuous wall provided with water stop component for blocking permeation path - Google Patents
Underground continuous wall provided with water stop component for blocking permeation path Download PDFInfo
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- CN111894020A CN111894020A CN202010694334.9A CN202010694334A CN111894020A CN 111894020 A CN111894020 A CN 111894020A CN 202010694334 A CN202010694334 A CN 202010694334A CN 111894020 A CN111894020 A CN 111894020A
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- continuous wall
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses an underground continuous wall provided with a water stop component for blocking a permeation path, which comprises an underground continuous wall body, wherein the underground continuous wall body is provided with a water stop component, and the underground continuous wall body and the water stop component are both positioned in a wall groove of the underground continuous wall body; the underground continuous wall body is of a cast-in-place concrete structure, a reinforcing mesh is embedded in the underground continuous wall body, and the water stop component is fixedly connected with the reinforcing mesh. The invention provides an underground continuous wall provided with a water stopping component for blocking a permeation path, which solves the problems that concrete is not compacted and is broken when the underground continuous wall is constructed, thereby effectively preventing the underground continuous wall from water leakage and eliminating the hidden troubles of construction quality and foundation pit safety.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an underground continuous wall provided with a water stop component for blocking a permeation path.
Background
The underground continuous wall is used as a supporting structure and is mainly suitable for deep foundation pit engineering with excavation depth of more than 10 meters and high requirements on water resistance and leakage resistance. For example, in ultra-deep foundation pit engineering, when other enclosure bodies cannot meet the requirements, an underground continuous wall is often used as an enclosure structure, and the underground continuous wall can also be a part of a main structure. Therefore, the waterproof and anti-permeability performance of the underground diaphragm wall directly affects the construction quality and the safety of the foundation pit. For years, the phenomena of incompact concrete pouring, fracture and the like often occur during underwater construction of the underground continuous wall, so that the underground continuous wall leaks water, and hidden dangers are brought to subsequent construction quality and foundation pit safety. The underground continuous wall with the water stop part can effectively solve the problem of water leakage prevention of the underground continuous wall
Therefore, how to provide an underground continuous wall provided with a water stop component for blocking a permeation path is a problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides an underground continuous wall provided with a water stop component for blocking a permeation path, which solves the problems that concrete is not compacted and is broken when the underground continuous wall is constructed, thereby effectively preventing the underground continuous wall from leaking water and eliminating the hidden troubles of construction quality and foundation pit safety.
In order to achieve the purpose, the invention adopts the following technical scheme:
an underground continuous wall provided with a water stop component for blocking a permeation path comprises an underground continuous wall body, wherein the underground continuous wall body is provided with the water stop component, and the underground continuous wall body and the water stop component are both positioned in a wall groove of the underground continuous wall body; the underground continuous wall body is of a cast-in-place concrete structure, a reinforcing mesh is embedded in the underground continuous wall body, and the water stop component is fixedly connected with the reinforcing mesh.
Preferably, in the underground continuous wall provided with the water stopping component for blocking a permeation path, the water stopping component is an anti-seepage water stopping composite board, the anti-seepage water stopping composite board is located between the inner wall of the wall trough and the soil facing surface of the underground continuous wall, the top edge of the anti-seepage water stopping composite board is flush with the top of the underground continuous wall, and the top edge of the anti-seepage water stopping composite board is fixedly connected with the reinforcing mesh.
Preferably, in the underground continuous wall provided with the water stopping component for stopping the permeation path, the impermeable and water stopping combined plate is formed by splicing a plurality of impermeable and water stopping plates along the length direction of the underground continuous wall; and the splicing edges of the adjacent seepage-proofing water-stopping plates are welded and connected in a full-welding mode.
Preferably, in the underground continuous wall provided with the water stopping component for blocking a permeation path, one surface of the watertight board facing the underground continuous wall is provided with a back rib board, and the back rib board is vertically arranged and is perpendicular to the watertight board; the back rib plates are arranged in parallel and are distributed on one surface of the anti-seepage water stop plate facing the underground continuous wall at equal intervals; the back rib plate is embedded in the underground continuous wall body.
Preferably, in the underground continuous wall provided with the water stopping component for blocking a permeation path, the impermeable water stopping plate and the back ribbed plate are of an integrated plastic structure.
Preferably, in the underground continuous wall provided with the water stopping component for blocking a permeation path, the water stopping component is a bent water stopping composite board, and the bent water stopping composite board is positioned in the underground continuous wall body; the bending type water stop composite board is formed by splicing a plurality of built-in water stop boards along the length direction of the underground continuous wall body, and a continuously bending plate-shaped structure is formed.
Preferably, in the underground continuous wall provided with the water stopping component for blocking a permeation path, the bent water stopping composite slab is fixedly connected with the reinforcing mesh through a bracket.
Preferably, in the underground continuous wall provided with the water stop component for blocking a permeation path, the bracket comprises a pull rod and a water stop sheet, the pull rod vertically penetrates through the center of the water stop sheet, and the water stop sheet is fixedly connected with the pull rod in a full-welding manner; the steel bar mesh is provided with two layers, the bending type water stop composite board is positioned between the two layers of the steel bar mesh, and fixing holes matched with the pull rods are formed in the bending type water stop composite board; the pull rod penetrates through the fixing hole, two ends of the pull rod are respectively connected with the two layers of reinforcing mesh in a binding mode, and the water stop sheet is tightly pressed on the bending type water stop composite board.
Preferably, in the underground diaphragm wall provided with the water stopping member for blocking a permeation path, the built-in water stopping plate is a flat steel plate, and a plurality of the flat steel plates are continuously welded in a full-length welding manner to form a plate-shaped structure having continuous bends.
Preferably, in the underground diaphragm wall provided with the water stopping member for blocking a permeation path, the built-in water stopping plate is an L-shaped steel plate, and a plurality of the L-shaped steel plates are continuously welded in a full-length welding manner to form a plate-shaped structure having continuous bends.
According to the technical scheme, compared with the prior art, the underground continuous wall provided with the water stopping component for blocking the permeation path is provided, the whole water stopping component is arranged in the area where water leakage is easy to occur and water seepage occurs on the underground continuous wall, the water seepage outside the foundation pit cannot continuously seep inwards after meeting the water stopping component, and the water stopping component plays a role in blocking the permeation path of the water.
The invention can meet the foundation pit construction standard with higher requirements on waterproof and anti-permeability performance, and the water-stopping component blocks the water flow path, thereby playing a waterproof role and effectively improving the construction quality and the foundation pit safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of embodiment 1;
FIG. 2 is a top view of an un-cast underground continuous wall according to example 1;
FIG. 3 is a top view of the watertight composite slab;
FIG. 4 is a schematic structural view of embodiment 2;
FIG. 5 is a top view of an un-cast underground continuous wall according to example 2;
FIG. 6 is a top view of the bending type water stop composite board;
fig. 7 is an enlarged view of a portion a of fig. 5.
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.
The embodiment of the invention discloses an underground continuous wall provided with a water stop component for blocking a permeation path, which solves the problems of incompact concrete pouring and fracture during construction of the underground continuous wall, thereby effectively preventing the underground continuous wall from water leakage and eliminating the potential safety hazard of construction quality and foundation pit safety.
Example 1
An underground continuous wall provided with a water stop component for blocking a permeation path comprises an underground continuous wall body 1, wherein the underground continuous wall body 1 is provided with the water stop component, and the underground continuous wall body 1 and the water stop component are both positioned in a wall groove 2 of the underground continuous wall body 1; the underground continuous wall body 1 is of a cast-in-place concrete structure, a reinforcing mesh 3 is embedded in the underground continuous wall body 1, and the water stop component is fixedly connected with the reinforcing mesh 3.
In order to further optimize the technical scheme, the water stopping component is an anti-seepage water stopping composite board 41, the anti-seepage water stopping composite board 41 is positioned between the inner wall of the wall slot 2 and the soil facing surface of the underground continuous wall body 1, the top edge of the anti-seepage water stopping composite board 41 is flush with the top of the underground continuous wall body 1, and the top edge of the anti-seepage water stopping composite board 41 is fixedly connected with the reinforcing mesh 3.
In order to further optimize the technical scheme, the anti-seepage and water-stop composite board 41 is formed by splicing a plurality of anti-seepage and water-stop boards along the length direction of the underground continuous wall body 1; the splicing edges of the adjacent anti-seepage water stop plates are welded and connected in a full-welding mode.
In order to further optimize the technical scheme, one surface of the anti-seepage water stop plate, which faces the underground continuous wall 1, is provided with a back rib plate 411, and the back rib plate 411 is vertically arranged and is perpendicular to the anti-seepage water stop plate; a plurality of back rib plates 411 are arranged in parallel and are distributed on one surface of the anti-seepage water stop plate facing the underground continuous wall 1 at equal intervals; the back rib plate 411 is buried in the underground continuous wall 1.
In order to further optimize the technical scheme, the anti-seepage water stop plate and the back rib plate 411 are of an integrated plastic structure.
The construction steps are as follows:
the method comprises the following steps: and (3) excavating a wall groove 2 of the underground diaphragm wall, wherein the wall groove 2 penetrates through the water-bearing soil layer 5, and the bottom of the groove is positioned on the water-proof soil layer 6.
Step two: filling a reinforcing mesh 3 in the wall groove 2, splicing a plurality of anti-seepage and water-stop plates produced in a factory into an anti-seepage and water-stop composite plate 41 along the length direction of the underground continuous wall body 1, and welding and connecting the splicing edges of the adjacent anti-seepage and water-stop plates in a full-weld mode to prevent leakage at a welding seam; the spliced whole anti-seepage water-stop composite board 41 is inserted into a gap between the inner wall of the wall slot 2 and the soil facing surface of the underground continuous wall body 1;
step three: adjusting the top edge of the anti-seepage and water-stopping composite board 41 to be flush with the top of the underground continuous wall 1, and fixedly connecting the top edge of the anti-seepage and water-stopping composite board 41 with the reinforcing mesh 3; the bottom edge of the seepage-proofing and water-stopping combined plate 41 is buried into the waterproof soil layer 6 by 1000mm, and the seepage-proofing and water-stopping combined plate 41 can separate the contact area of the underground continuous wall body 1 and the water-containing soil layer 5, so that a water seepage path in the water-containing soil layer 5 is cut off.
Step four: two pouring guide pipes 7 are arranged in the reinforcing mesh 3, the underground continuous wall body 1 is poured through the pouring guide pipes 7, the pouring guide pipes 7 are pulled up while concrete is poured, so that the concrete in the underground continuous wall body 1 is uniformly and compactly poured, single-section underground continuous wall construction is completed after the concrete is solidified, and then the construction of a foundation 8, a bottom plate 9, an inner supporting beam 10, a side slope 11, a catch basin 12 and a crown beam 13 is performed.
Example 2
An underground continuous wall provided with a water stop component for blocking a permeation path comprises an underground continuous wall body 1, wherein the underground continuous wall body 1 is provided with the water stop component, and the underground continuous wall body 1 and the water stop component are both positioned in a wall groove 2 of the underground continuous wall body 1; the underground continuous wall body 1 is of a cast-in-place concrete structure, a reinforcing mesh 3 is embedded in the underground continuous wall body 1, and the water stop component is fixedly connected with the reinforcing mesh 3.
In order to further optimize the technical scheme, the water stopping component is a bent water stopping composite board 42, and the bent water stopping composite board 42 is positioned in the underground continuous wall body 1; the bending type water stop composite board 42 is formed by splicing a plurality of built-in water stop boards along the length direction of the underground continuous wall body 1 to form a continuously bending plate-shaped structure.
In order to further optimize the above technical solution, the bending type water stop composite board 42 is fixedly connected with the steel mesh 3 through the bracket 421.
In order to further optimize the technical scheme, the support 421 comprises a pull rod 422 and a water stop piece 423, the pull rod 422 vertically penetrates through the center of the water stop piece 423, and the water stop piece 423 is fixedly connected with the pull rod 422 in a full-length welding manner; the reinforcing mesh 3 is provided with two layers, the bending type water stop composite board 42 is positioned between the two layers of reinforcing mesh 3, and the bending type water stop composite board 42 is provided with a fixing hole matched with the pull rod 422; the pull rod 422 penetrates through the fixing hole, two ends of the pull rod are respectively bound and connected with the two layers of reinforcing mesh 3, and the water stop sheet 423 is tightly pressed on the bending type water stop composite board 42.
In order to further optimize the technical scheme, the built-in water stop plate is a flat steel plate, and a plurality of flat steel plates are continuously welded in a full-length welding mode to form a continuously bent plate-shaped structure.
In order to further optimize the technical scheme, the built-in water stop plate is an L-shaped steel plate, and a plurality of L-shaped steel plates are continuously welded in a full-length welding mode to form a continuously bent plate-shaped structure.
The construction steps are as follows:
the method comprises the following steps: and (3) excavating a wall groove 2 of the underground diaphragm wall, wherein the wall groove 2 penetrates through the water-bearing soil layer 5, and the bottom of the groove is positioned on the water-proof soil layer 6.
Step two: filling two layers of reinforcing mesh 3 in the wall groove 2, connecting the two layers of reinforcing mesh 3 at the edge, splicing a plurality of built-in water stop plates produced in a factory into a bent water stop composite plate 42 along the length direction of the underground continuous wall body 1 to form the whole bent water stop composite plate 42, and welding the splicing edges of adjacent built-in water stop plates in a full-length welding manner to prevent leakage at the welding seam; the side length of the bending type water stop composite board 42 along the length direction of the underground continuous wall body 1 is smaller than the side length of the reinforcing mesh 3 along the length direction of the underground continuous wall body 1, so that the bending type water stop composite board 42 is ensured to be positioned in the two layers of reinforcing meshes 3.
Step three: the whole bent water-stop composite board 42 which is spliced is fixed between the two layers of reinforcing steel bar meshes 3 through the support 421, the top edge of the whole bent water-stop composite board 42 is 500mm higher than a water-containing soil layer, the bottom edge of the bent water-stop composite board 42 is embedded into the water-stop soil layer 6 for 1000mm, the bent water-stop composite board 42 can separate the region of the underground continuous wall body 1 contacting with the water-containing soil layer 5, and a water permeation path in the water-containing soil layer 5 is cut off.
Step four: three pouring guide pipes 7 are arranged in the reinforcing mesh 3, the underground continuous wall body 1 is poured through the pouring guide pipes 7, the pouring guide pipes 7 are pulled up while concrete is poured, so that the concrete in the underground continuous wall body 1 is uniformly and compactly poured, single-section underground continuous wall construction is completed after the concrete is solidified, and then the construction of a foundation 8, a bottom plate 9, an inner supporting beam 10, a side slope 11, a catch basin 12 and a crown beam 13 is performed.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The underground continuous wall provided with the water stopping component for blocking a permeation path is characterized by comprising an underground continuous wall body, wherein the underground continuous wall body is provided with the water stopping component, and the underground continuous wall body and the water stopping component are both positioned in a wall groove of the underground continuous wall body; the underground continuous wall body is of a cast-in-place concrete structure, a reinforcing mesh is embedded in the underground continuous wall body, and the water stop component is fixedly connected with the reinforcing mesh.
2. The underground continuous wall provided with the water stopping component for blocking the permeation path according to claim 1, wherein the water stopping component is an impermeable water stopping composition board, the impermeable water stopping composition board is positioned between the inner wall of the wall slot and the soil facing surface of the underground continuous wall, the top edge of the impermeable water stopping composition board is flush with the top of the underground continuous wall, and the top edge of the impermeable water stopping composition board is fixedly connected with the reinforcing mesh.
3. The underground continuous wall provided with the water stopping component for blocking the permeation path according to claim 2, wherein the impermeable and water stopping composite board is formed by splicing a plurality of impermeable and water stopping boards along the length direction of the underground continuous wall; and the splicing edges of the adjacent seepage-proofing water-stopping plates are welded and connected in a full-welding mode.
4. The underground continuous wall provided with the water stopping and seepage stopping component for stopping seepage paths according to claim 3, wherein one side of the water stopping and seepage preventing plate, which faces the underground continuous wall body, is provided with a back rib plate, and the back rib plate is vertically arranged and is perpendicular to the water stopping and seepage preventing plate; the back rib plates are arranged in parallel and are distributed on one surface of the anti-seepage water stop plate facing the underground continuous wall at equal intervals; the back rib plate is embedded in the underground continuous wall body.
5. An underground diaphragm wall provided with a water stop component for obstructing a permeation path according to claim 4, wherein the water stop and seepage preventing plate and the back rib plate are of an integral plastic structure.
6. The underground continuous wall provided with the water stopping components for blocking the permeation path according to claim 1, wherein the water stopping components are bent water stopping composition boards, and the bent water stopping composition boards are positioned in the underground continuous wall body; the bending type water stop composite board is formed by splicing a plurality of built-in water stop boards along the length direction of the underground continuous wall body, and a continuously bending plate-shaped structure is formed.
7. The underground continuous wall provided with the water stopping components for blocking the permeation path according to claim 6, wherein the bent water stopping composite boards are fixedly connected with the reinforcing mesh through brackets.
8. The underground continuous wall provided with the water stopping component for blocking the permeation path according to claim 7, wherein the bracket comprises a pull rod and a water stopping sheet, the pull rod vertically penetrates through the center of the water stopping sheet, and the water stopping sheet is fixedly connected with the pull rod in a full-welded mode; the steel bar mesh is provided with two layers, the bending type water stop composite board is positioned between the two layers of the steel bar mesh, and fixing holes matched with the pull rods are formed in the bending type water stop composite board; the pull rod penetrates through the fixing hole, two ends of the pull rod are respectively connected with the two layers of reinforcing mesh in a binding mode, and the water stop sheet is tightly pressed on the bending type water stop composite board.
9. An underground continuous wall provided with a water stop member for blocking a permeation path according to claim 8, wherein the built-in water stop plate is a flat steel plate, and a plurality of the flat steel plates are continuously welded by full-length welding to form a plate-shaped structure having continuous bends.
10. An underground continuous wall provided with a water stop member for blocking a permeation path according to claim 8, wherein the built-in water stop plate is an L-shaped steel plate, and a plurality of the L-shaped steel plates are continuously welded by full-length welding to form a plate-shaped structure having continuous bends.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010694334.9A CN111894020A (en) | 2020-07-17 | 2020-07-17 | Underground continuous wall provided with water stop component for blocking permeation path |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010694334.9A CN111894020A (en) | 2020-07-17 | 2020-07-17 | Underground continuous wall provided with water stop component for blocking permeation path |
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| CN212801608U (en) * | 2020-07-17 | 2021-03-26 | 江西建工第二建筑有限责任公司 | Underground continuous wall with built-in water stop plate |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20150211205A1 (en) * | 2014-01-29 | 2015-07-30 | Guangzhou Jishi Construction Group Co., Ltd. | Construction system for subway station |
| CN105002913A (en) * | 2015-08-06 | 2015-10-28 | 中铁隆工程集团有限公司 | Strongly-permeable stratum deep foundation pit bottom sealing water stopping structure and construction method thereof |
| CN106812131A (en) * | 2017-02-28 | 2017-06-09 | 江苏东合南岩土科技股份有限公司 | A kind of permanent sheet pile underground structure and its construction method |
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