CN117266211B - Installation process of isolation protection structure of circular locking embedded part of underground diaphragm wall - Google Patents

Installation process of isolation protection structure of circular locking embedded part of underground diaphragm wall Download PDF

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Publication number
CN117266211B
CN117266211B CN202311537211.4A CN202311537211A CN117266211B CN 117266211 B CN117266211 B CN 117266211B CN 202311537211 A CN202311537211 A CN 202311537211A CN 117266211 B CN117266211 B CN 117266211B
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embedded part
lock catch
circular
filling
filling water
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CN117266211A (en
Inventor
王红雷
张怡戈
刘明
吴立凯
苏义如
柳阳
黄庆亚
马东铭
李文祥
刘继锐
刘赢
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CCCC First Harbor Engineering Co Ltd
No 1 Engineering Co Ltd of CCCC First Harbor Engineering Co Ltd
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CCCC First Harbor Engineering Co Ltd
No 1 Engineering Co Ltd of CCCC First Harbor Engineering Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • E02D19/12Restraining of underground water by damming or interrupting the passage of underground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • E02D31/04Watertight packings for use under hydraulic pressure
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Abstract

The invention relates to an isolation protection structure and process for a circular lock catch embedded part of a underground continuous wall. The filling water bag is arranged inside the circular lock catch embedded part, so that no cement slurry leakage and caking filling are guaranteed inside the circular lock catch embedded part, and the conventional sand bag filling and the turbulence steel plate are adopted outside the circular lock catch embedded part to realize turbulence isolation.

Description

Installation process of isolation protection structure of circular locking embedded part of underground diaphragm wall
Technical Field
The invention relates to the technical field of underground space engineering, in particular to a mounting process of an isolation protection structure of a circular locking embedded part of a underground continuous wall.
Background
The underground diaphragm wall is used as a common deep foundation pit supporting form, has the function of water and soil blocking, and can effectively protect the safety of a building. The underground diaphragm wall is a kind of slot-digging machinery used in foundation engineering on the ground, a long and narrow deep slot is dug along the peripheral axis of the deep-digging engineering under the condition of mud wall protection, after the slot is cleared, the reinforcement cage is hung in the slot, then the underwater concrete is poured by duct method to construct a unit slot section, so that a continuous reinforced concrete wall is built underground section by section, and is used as water-intercepting, seepage-proofing, bearing and water-retaining structure. Along with the wide application of various underground projects and foundation pit projects, a single underground continuous wall support form is difficult to meet the requirement of increasingly complex deep foundation pit support, the combined support forms of an underground continuous wall, a steel sheet pile, a steel pipe pile, a bored pile and the like are gradually appeared, the combined form has extremely high requirements on connection quality and water stopping effect among different support structures, and at the moment, embedded parts and connecting parts connected with different support structures are particularly important so as to ensure the installation quality in the construction process.
At present, the filling scheme of the embedded part structure of the underground continuous wall mostly adopts manual filling, sand bags and joint box filling processes, but is limited by factors such as work efficiency, convenience and applicability, the existing filling scheme is easy to cause the conditions that the embedded part is blocked by filling of underwater concrete, is extruded and deformed, local leakage weakens the use efficiency, and the like, so that the using time of the next working procedure is long, the efficacy is reduced, and the practical effect is poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides an isolation protection structure for a circular lock catch embedded part of a underground diaphragm wall, and can be popularized and used for filling protection of the underground buried structure.
The invention also provides a process for isolating and protecting the structure by utilizing the circular locking embedded part of the underground diaphragm wall.
The invention solves the technical problems by the following technical proposal:
the utility model provides a circular hasp built-in fitting isolation protection architecture of underground diaphragm wall, includes circular hasp built-in fitting, fills the water pocket, connects steel sheet, vortex steel sheet, underground diaphragm wall steel reinforcement cage, sand bag, circular hasp built-in fitting and underground diaphragm wall steel reinforcement cage pass through connection steel sheet welded fastening, it arranges circular hasp built-in fitting to fill the water pocket, vortex steel sheet welds in connection steel sheet both sides, the sand bag keeps apart circular hasp built-in fitting.
Moreover, the length of the circular lock catch embedded part is matched with that of the underground continuous wall reinforcement cage.
Moreover, the filling water bag is a cylindrical flexible filling water bag.
A process for isolating and protecting a structure by utilizing a circular lock catch embedded part of a underground diaphragm wall comprises the following steps:
s1, fixing a circular lock catch embedded part: when the underground diaphragm wall reinforcement cage is manufactured, the circular lock catch embedded part and the underground diaphragm wall reinforcement cage are welded and fixed through the connecting steel plates, and turbulent flow steel plates are welded at two sides of the connecting steel plates respectively;
s2, installing a filling water bag: placing the filling water bag into a circular lock catch embedded part, and smoothing out smoothly and straightly;
s3, leak detection of the filling water bag: before the fixing of the circular lock catch embedded part is completed and the underground continuous wall reinforcement cage is hoisted, the filling water bags are inflated and leak-detected, and whether all connecting parts are penetrated and leaked is checked; after the leak test is completed, opening a valve of a water inlet control valve to fill water bags, simultaneously opening an exhaust hole to exhaust, continuously filling water until the inside of the water bags is completely filled, observing the reading of a pressure gauge, controlling the water pressure to be not more than 0.36Mpa (combined with the installation depth calculation of the embedded part), and closing the water injection and exhaust valve after the water injection is completed, and performing the next procedure;
s4, hoisting underground continuous reinforcement cages and filling water bags to supplement pressure: after the underground continuous reinforcement cage and the circular lock catch embedded part are processed, hoisting and lowering the steel bar cage and the circular lock catch embedded part, and performing the last pressure check and water supplementing before the filling water bag is completely put into the groove, wherein the water pressure is not smaller than the design pressure;
s5, filling sand bags on the outer sides of the circular lock catch embedded parts: the method comprises the steps of completing the lowering and mounting of an underground diaphragm wall reinforcement cage, mounting a super-grooved section on a circular lock catch embedded part, filling sand bags, checking and monitoring the pressure of filling water bags, filling water in the filling water bags, and filling channel concrete by adopting mechanical and manual cooperation;
s6, filling water bags for pumping water, dismantling and cleaning the inner wall: the concrete pouring completion time and the circular lock catch embedded part channel excavation time are more than 48 hours, the filling water bags are pumped gradually before the circular lock catch embedded part channel is excavated, the inside of the circular lock catch embedded part is cleaned by adopting a steel wire brush when the outside sand bag is excavated, and the rear part of the initial setting of the concrete can be removed;
s7, installing a next structure: after the cleaning is finished, the steel pipe pile supporting structure is installed through the lock catch connecting piece and the lock catch connecting steel plate.
The invention has the advantages and positive effects that:
according to the isolation protection structure for the circular lock catch embedded part of the underground diaphragm wall, the filling water bag is arranged in the circular lock catch embedded part, no cement slurry leakage and caking filling are guaranteed in the circular lock catch embedded part, and the conventional sand bag filling and turbulent flow steel plate is adopted to realize turbulent flow isolation outside the circular lock catch embedded part.
According to the invention, the process of the isolation protection structure of the circular lock catch embedded part of the underground diaphragm wall is utilized, when the next working procedure is carried out, the cleaning effect is ideal, no isolation is generated in the excavation process, and the isolation protection of the circular lock catch embedded structure is better realized.
The invention utilizes the technology of the isolation protection structure of the circular locking embedded part of the underground diaphragm wall, the linearity and the internal protection of the circular locking embedded part ensure the water stopping effect of the connecting part, plays a positive role in the foundation pit supporting safety, and simultaneously has certain reference significance on effectively controlling the adverse effect generated by the turbulent flow of the underwater concrete and the isolation protection of double-layer and special-shaped embedded parts of the underground structure.
The invention utilizes the process of the isolation protection structure of the circular locking embedded part of the underground diaphragm wall, improves the construction efficiency and economic benefit, has good protection effect on the circular locking embedded part, is beneficial to the development of lower working procedures, saves the operation time and improves the working efficiency.
According to the invention, by utilizing the isolation protection structure and the process of the circular locking embedded part of the underground continuous wall, a combined filling scheme of filling water bags in the embedded part and wrapping by using external sand bags is designed aiming at the circular locking embedded part, so that on one hand, the inside of the circular locking embedded part is prevented from being filled and solidified by turbulent cement slurry, and on the other hand, the embedded part is cleaned conveniently in the next working procedure; on the other hand, the integral linear shape of the embedded part is protected, and the follow-up use is not influenced by the deformation of the concrete pouring pressure.
Drawings
FIG. 1 is a schematic diagram of an isolation protection structure of a circular latch embedded part of an underground diaphragm wall;
FIG. 2 is a schematic diagram showing the connection between the isolation protection structure of the circular locking embedded part of the underground diaphragm wall and the supporting structure of the steel pipe pile;
FIG. 3 is a schematic illustration of a filled water bladder of the present invention;
FIG. 4 is a cross-sectional view showing the connection between the isolation protection structure of the circular locking embedded part of the underground diaphragm wall and the supporting structure of the steel pipe pile;
FIG. 5 is a process flow diagram of the isolation protection structure of the circular locking embedded part of the underground diaphragm wall.
In the figure:
1-circular lock catch embedded parts, 2-filling water bags, 3-sand bags, 4-connecting steel plates, 5-turbulent flow steel plates, 6-underground continuous wall reinforcement cages, 7-circular lock catch embedded parts, super-digging sections, 8-lock catch connecting parts, 9-lock catch connecting steel plates, 10-steel pipe pile supporting structures, 11-exhaust holes, 12-water inlet control valves and 13-pressure gauges.
Description of the embodiments
The invention is further illustrated by the following examples, which are intended to be illustrative only and not limiting in any way.
The utility model provides a circular hasp built-in part isolation protection architecture of underground diaphragm wall, including circular hasp built-in part 1, fill water pocket 2, connecting steel sheet 4, vortex steel sheet 5, underground diaphragm wall reinforcement cage 6, sand bag 3, circular hasp built-in part 1 and underground diaphragm wall reinforcement cage 6 pass through connecting steel sheet 4 welded fastening, circular hasp built-in part 1 length matches with underground diaphragm wall reinforcement cage 6, circular hasp built-in part 1 is arranged in to cylindrical flexible filling water pocket 2, protect circular hasp built-in part 1 inner structure, guarantee that circular hasp built-in part 1 inside no cement slurry seepage, the non-caking is filled, avoid large-scale equipment clearance to damage circular hasp built-in part 1 inner structure, vortex steel sheet 5 welds in connecting steel sheet 4 both sides, sand bag 3 keeps apart circular hasp built-in part 1, avoid the concrete to wrap up circular hasp built-in part 1 in a large number of outflow, in order to guarantee that the outside of circular hasp built-in part 1 does not take place too much vortex. The circular latch embedded part 1 of the underground diaphragm wall after isolation protection can be connected with the steel pipe pile supporting structure 10 through the latch connecting piece 8 and the latch connecting steel plate 9.
A process for isolating and protecting a structure by utilizing a circular lock catch embedded part of a underground diaphragm wall comprises the following steps:
s1, fixing a circular lock catch embedded part 1: when the underground diaphragm wall reinforcement cage 6 is manufactured, the circular lock catch embedded part 1 and the underground diaphragm wall reinforcement cage 6 are welded and fixed through the connecting steel plates 4, in order to ensure that the structure of the circular lock catch embedded part 1 is not extruded and deformed by the outside filling sand bags 3, the circular lock catch embedded part 1 is supported and installed fully by combining truss ribs of the underground diaphragm wall reinforcement cage 6, the two sides of the connecting steel plates 4 are respectively welded with turbulent steel plates 5, underground diaphragm wall construction equipment is limited, when the size of the circular lock catch embedded part 1 is oversized, grooving is needed to be carried out by grooving equipment to ensure that the circular lock catch embedded part 1 is placed in a space, at the moment, the size of the circular lock catch embedded part 1 and the grooving size of the equipment deviate, measures of welding turbulent steel plates 5 are adopted at the two sides of the connecting steel plates 4 respectively to ensure that excessive turbulent flow does not occur at the outer side of the circular lock catch embedded part 1, so that turbulent flow can be controlled to avoid concrete to largely outflow to wrap the circular lock catch embedded part 1;
s2, installing a filling water bag 2: placing the filling water bag 2 in the circular lock catch embedded part 1, and smoothening and straightening;
s3, leak detection is carried out on the filling water bag 2: the method comprises the steps that (1) the circular lock catch embedded part 1 is fixed, before the underground diaphragm wall reinforcement cage 6 is hoisted, the filling water bag 2 is inflated for leakage detection, and whether all connecting parts are penetrated or not is checked; after the leak test is completed, opening a valve of a water inlet control valve 12 to fill water in the water bag 2, simultaneously opening an exhaust hole 11 to exhaust, continuously filling water until the inside of the water bag 2 is completely filled, observing the reading of a pressure gauge 13, controlling the water pressure to be not more than 0.36Mpa (combined with the installation depth calculation of the embedded part), and closing the water inlet and exhaust valves after the water injection is completed to perform the next procedure;
s4, hoisting underground continuous reinforcement cages and filling water bags to supplement pressure: after the underground continuous reinforcement cage 6 and the circular lock catch embedded part 1 are processed, hoisting and lowering the steel bar cage until the filling water bag 2 is completely put into the groove, performing the last pressure check and water supplementing, wherein the water pressure is not smaller than the design pressure at the moment, and avoiding the filling water bag from being compressed and damaged to the design depth;
s5, filling sand bags on the outer sides of the circular lock catch embedded parts: the underground diaphragm wall reinforcement cage 6 is placed and installed, the super-grooved section 7 is installed on the circular lock catch embedded part to fill sand bags, at the moment, the pressure of the filling water bag 2 is checked and monitored, the filling water bag 2 is filled with water, and the mechanical and manual cooperation is adopted to fill concrete in the channel;
s6, pumping water to remove and clean the inner wall by filling the water bag 2: the time interval between the completion of concrete pouring and the excavation of the channel of the circular locking embedded part 1 is more than 48 hours, the filling water bag 2 is pumped gradually before the channel of the circular locking embedded part 1 is excavated, the inside of the circular locking embedded part 1 is cleaned by adopting a steel wire brush when the outside sand bag 3 is excavated, and the rear of the initial setting of the concrete is removable;
s7, installing a next structure: after the cleaning is finished, the steel pipe pile supporting structure 10 is installed through the lock catch connecting piece 8 and the lock catch connecting steel plate 9.
Although the embodiments of the present invention and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the embodiments and the disclosure of the drawings.

Claims (3)

1. The installation process of the isolation protection structure of the circular lock catch embedded part of the underground diaphragm wall is characterized by comprising the following steps of:
the isolation protection structure for the circular locking embedded parts of the underground diaphragm wall comprises a circular locking embedded part (1), a filling water bag (2), connecting steel plates (4), a turbulent flow steel plate (5), an underground diaphragm wall reinforcement cage (6) and sand bags (3), wherein the circular locking embedded part (1) and the underground diaphragm wall reinforcement cage (6) are welded and fixed through the connecting steel plates (4), the filling water bag (2) is arranged in the circular locking embedded part (1), the turbulent flow steel plates (5) are welded on two sides of the connecting steel plates (4), and the sand bags (3) isolate the circular locking embedded part (1);
the mounting process is as follows:
s1, fixing a circular lock catch embedded part: when the underground diaphragm wall reinforcement cage is manufactured, the circular lock catch embedded part and the underground diaphragm wall reinforcement cage are welded and fixed through the connecting steel plates, and turbulent flow steel plates are welded at two sides of the connecting steel plates respectively;
s2, installing a filling water bag: placing the filling water bag into a circular lock catch embedded part, and smoothing out smoothly and straightly;
s3, leak detection of the filling water bag: before the fixing of the circular lock catch embedded part is completed and the underground continuous wall reinforcement cage is hoisted, the filling water bags are inflated and leak-detected, and whether all connecting parts are penetrated and leaked is checked; after the leak test is completed, opening a valve of a water inlet control valve to fill water bags, simultaneously opening an exhaust hole to exhaust, continuously filling water until the inside of the water bags is completely filled, observing the reading of a pressure gauge, controlling the water pressure to be not more than 0.36Mpa, and closing the water injection and exhaust valve after the water injection is completed, and performing the next procedure;
s4, hoisting underground continuous reinforcement cages and filling water bags to supplement pressure: after the underground continuous reinforcement cage and the circular lock catch embedded part are processed, hoisting and lowering the steel bar cage and the circular lock catch embedded part, and performing final pressure check and water supplementing before the filling water bag is completely put into the groove, wherein the water pressure is not smaller than the design pressure at the moment, so that the filling water bag is prevented from being compressed and damaged to the design depth;
s5, filling sand bags on the outer sides of the circular lock catch embedded parts: the method comprises the steps of completing the lowering and mounting of an underground diaphragm wall reinforcement cage, mounting a super-grooved section on a circular lock catch embedded part, filling sand bags, checking and monitoring the pressure of filling water bags, filling water in the filling water bags, and filling channel concrete by adopting mechanical and manual cooperation;
s6, filling water bags for pumping water, dismantling and cleaning the inner wall: the concrete pouring completion time and the circular lock catch embedded part channel excavation time are more than 48 hours, the filling water bags are pumped gradually before the circular lock catch embedded part channel is excavated, the inside of the circular lock catch embedded part is cleaned by adopting a steel wire brush when the outside sand bag is excavated, and the rear part of the initial setting of the concrete can be removed;
s7, installing a next structure: after the cleaning is finished, the steel pipe pile supporting structure is installed through the lock catch connecting piece and the lock catch connecting steel plate.
2. The installation process of the isolation protection structure of the circular locking embedded part of the underground diaphragm wall, which is characterized in that: the length of the circular lock catch embedded part (1) is matched with that of the underground continuous wall reinforcement cage (6).
3. The installation process of the isolation protection structure of the circular locking embedded part of the underground diaphragm wall, which is characterized in that: the filling water bag (2) is a cylindrical flexible filling water bag.
CN202311537211.4A 2023-11-17 2023-11-17 Installation process of isolation protection structure of circular locking embedded part of underground diaphragm wall Active CN117266211B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11269870A (en) * 1998-03-26 1999-10-05 Kajima Corp Execution method of joint for underground continuous wall
CN110761272A (en) * 2019-10-29 2020-02-07 中交第二航务工程局有限公司 Underground diaphragm wall I-shaped steel joint anti-streaming structure and construction method
CN111155511A (en) * 2020-02-19 2020-05-15 武汉速安达建筑橡塑制品有限公司 Multi-cabin diaphragm wall joint construction filling bag and construction method
CN111206566A (en) * 2020-03-05 2020-05-29 中建一局集团第五建筑有限公司 Ground diaphragm wall I-shaped steel joint water stop control structure and construction method thereof
CN111455977A (en) * 2020-03-06 2020-07-28 珠海十字门中央商务区建设控股有限公司 Underground continuous wall construction method
CN217517631U (en) * 2021-03-26 2022-09-30 南京东大岩土工程勘察设计研究院有限公司 Water-stop steel pipe pile continuous wall
CN115652904A (en) * 2022-09-23 2023-01-31 中船第九设计研究院工程有限公司 Underground continuous wall plate type rigid joint and construction method thereof
CN116695715A (en) * 2023-06-20 2023-09-05 深圳市市政工程总公司 Inflatable fore shaft pipe and construction method thereof applied to underground diaphragm wall
CN116733022A (en) * 2023-05-10 2023-09-12 中国建筑第七工程局有限公司 Waterproof structure of underground diaphragm wall and construction method thereof
CN117027027A (en) * 2023-09-06 2023-11-10 中铁大桥局集团有限公司 Construction method of locking steel pipe pile cofferdam for rock-socketed anchoring

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11269870A (en) * 1998-03-26 1999-10-05 Kajima Corp Execution method of joint for underground continuous wall
CN110761272A (en) * 2019-10-29 2020-02-07 中交第二航务工程局有限公司 Underground diaphragm wall I-shaped steel joint anti-streaming structure and construction method
CN111155511A (en) * 2020-02-19 2020-05-15 武汉速安达建筑橡塑制品有限公司 Multi-cabin diaphragm wall joint construction filling bag and construction method
CN111206566A (en) * 2020-03-05 2020-05-29 中建一局集团第五建筑有限公司 Ground diaphragm wall I-shaped steel joint water stop control structure and construction method thereof
CN111455977A (en) * 2020-03-06 2020-07-28 珠海十字门中央商务区建设控股有限公司 Underground continuous wall construction method
CN217517631U (en) * 2021-03-26 2022-09-30 南京东大岩土工程勘察设计研究院有限公司 Water-stop steel pipe pile continuous wall
CN115652904A (en) * 2022-09-23 2023-01-31 中船第九设计研究院工程有限公司 Underground continuous wall plate type rigid joint and construction method thereof
CN116733022A (en) * 2023-05-10 2023-09-12 中国建筑第七工程局有限公司 Waterproof structure of underground diaphragm wall and construction method thereof
CN116695715A (en) * 2023-06-20 2023-09-05 深圳市市政工程总公司 Inflatable fore shaft pipe and construction method thereof applied to underground diaphragm wall
CN117027027A (en) * 2023-09-06 2023-11-10 中铁大桥局集团有限公司 Construction method of locking steel pipe pile cofferdam for rock-socketed anchoring

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