CN112942397B - Construction method and structure for strengthening water stop at joint of underground diaphragm wall - Google Patents
Construction method and structure for strengthening water stop at joint of underground diaphragm wall Download PDFInfo
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- CN112942397B CN112942397B CN202110143832.9A CN202110143832A CN112942397B CN 112942397 B CN112942397 B CN 112942397B CN 202110143832 A CN202110143832 A CN 202110143832A CN 112942397 B CN112942397 B CN 112942397B
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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
- E02D19/185—Joints between sheets constituting the sealing aprons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective 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
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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Abstract
The invention relates to a construction method and a structure for strengthening water stop at joints of an underground diaphragm wall, wherein each groove section of the underground diaphragm wall is constructed by adopting a groove jumping method, and the groove sections are connected by adopting H-shaped joints, and the construction method comprises the following steps: after the first-stage groove section underground continuous wall and the H-shaped joint are formed together, vertically presetting a water stop baffle plate at the end of a horizontal distribution rib of a second-stage groove section underground continuous wall close to the H-shaped joint, and attaching the water stop baffle plate to the H-shaped joint; after the second-stage groove section underground continuous wall is formed, excavating a foundation pit; exposing the joint part of the water stop baffle and the H-shaped joint; and connecting the water stop baffle plate with the joint part of the H-shaped joint in a seamless manner to form a rigid joint. According to the invention, the water stop baffle is seamlessly connected between the horizontal distribution rib and the H-shaped joint to form the rigid joint, so that the joints are completely connected, and the risks of water gushing and sand gushing at the joints of the underground diaphragm wall after the foundation pit is excavated are effectively reduced.
Description
Technical Field
The invention relates to the field of underground building construction, in particular to a construction method and a structure for strengthening water stop at a joint of an underground diaphragm wall.
Background
In the construction process of the underground continuous wall, the underground continuous wall cannot be cast at one time, the underground continuous wall must be cast in wall sections, and a seam exists between the two walls. Most parts of the parts which have water seepage in the process of excavating the foundation pit are arranged at the joints of the foundation pit.
In current conventional construction, each groove section of underground continuous wall often adopts the method of jumping the groove to be under construction, thereby adopt H type joint to connect between the groove section and prevent the junction infiltration, although the seam is in can using the wall brusher to clean in the work progress, but often because of can't make it have the phenomenon of pressing from both sides mud totally clean up, can't form wholly between two underground continuous walls behind the concreting, groundwater level risees, water pressure increases, the water slowly breaks away the mud sediment in the crack and forms infiltration passageway, cause underground continuous wall seam infiltration. After a long time, the water seepage channel is enlarged, water gushing is formed, and even sand gushing is driven to cause great harm.
Therefore, a construction method and a structure for strengthening water stop at the joint of the diaphragm wall are needed to further strengthen the water stop effect of the diaphragm wall and prevent water seepage and sand gushing at the joint of the diaphragm wall.
Disclosure of Invention
The invention aims to overcome the technical defects and provides a construction method and a structure for strengthening water stop at the joint of an underground diaphragm wall, which can further strengthen the water stop effect of the diaphragm wall and prevent water seepage and sand gushing at the joint of the diaphragm wall.
The technical scheme for realizing the purpose is as follows:
the invention provides a construction method for strengthening water stop at joints of an underground continuous wall, wherein each groove section of the underground continuous wall is constructed by adopting a groove jumping method, the groove sections are connected by adopting H-shaped joints, and the construction method comprises the following steps:
after the first-stage groove section underground continuous wall and the H-shaped joint are formed together, vertically presetting a water stop baffle plate at the end of a horizontal distribution rib of a second-stage groove section underground continuous wall close to the H-shaped joint, and attaching the water stop baffle plate to the H-shaped joint;
after the second-stage groove section underground continuous wall is formed, excavating a foundation pit;
exposing the joint part of the water stop baffle and the H-shaped joint;
and connecting the water stop baffle with the joint part of the H-shaped joint in a seamless manner.
The construction method for strengthening water stop at the joint of the underground continuous wall is further improved in that in the step of presetting the water stop baffle plate vertically, the height of the water stop baffle plate is consistent with that of the underground continuous wall and the water stop baffle plate is vertically arranged from the bottom of the groove section to the top of the groove section.
The construction method for strengthening water stop at the joint of the underground continuous wall is further improved in that in the step of attaching the water stop baffle to the H-shaped joint, the step of attaching the water stop baffle close to the excavation side of the foundation pit is attached to the outer edge of the flange plate of the H-shaped joint.
The construction method for reinforcing water stop at the joint of the underground continuous wall is further improved in that in the step of excavating the foundation pit, the steps of layering and partitioning, excavating the earthwork on the periphery of the underground continuous wall layer by layer from top to bottom to form a construction working surface to the bottom of the foundation pit, and then gradually excavating the middle earthwork.
The construction method for strengthening water stop at the joint of the underground continuous wall is further improved in that in the step of exposing the joint part of the water stop baffle and the H-shaped joint, concrete at the joint part of the water stop baffle and the H-shaped joint in the corresponding excavation area is completely chiseled off from the construction working surface of each layer.
The construction method for strengthening water stop at the joint of the underground continuous wall is further improved in that in the step of connecting the water stop baffle plate and the joint part of the H-shaped joint in a seamless mode, the step of connecting the water stop baffle plate and the joint part of the H-shaped joint in a seamless mode comprises the step of connecting the exposed water stop baffle plate and the joint part of the H-shaped joint in a seamless mode after concrete is chiseled in the corresponding excavation area on each layer of construction operation surface.
The construction method for strengthening water stop at the joint of the underground continuous wall is further improved in that in the step of connecting the water stop baffle with the joint part of the H-shaped joint in a seamless mode, the construction method further comprises the step of checking a gap between the water stop baffle and the H-shaped joint, if the gap is too large and cannot be connected in a seamless mode, at least one other water stop baffle for shielding the gap is arranged at the gap, and the other water stop baffle is connected with the water stop baffle and the H-shaped joint in a seamless mode.
The invention also provides a water stop structure at the joint of the underground diaphragm wall, which comprises:
the H-shaped joint is used for connecting the first-stage groove section underground continuous wall and the second-stage groove section underground continuous wall;
along vertical predetermine in the underground continuous wall of second phase groove section is adjacent to be close to the stagnant water baffle of the horizontal distribution muscle end that the H type connects, stagnant water baffle with the H type connects the laminating and in laminating position seamless connection rigid joint.
The reinforced water stop structure at the joint of the underground continuous wall is further improved in that the H-shaped joint is made of I-shaped steel, and the vertical height of the I-shaped steel is equal to the height of the underground continuous wall.
The reinforced water stop structure at the joint of the underground continuous wall is further improved in that the water stop baffle is made of a water stop steel plate, the water stop steel plate is welded with the end of the horizontal distribution rib, and the water stop steel plate is attached to the flange plate of the I-shaped steel and is fully welded at the attachment part.
The construction method for strengthening water stop at the joint of the underground continuous wall and the strengthening water stop structure have the beneficial effects that:
through adopting seamless connection stagnant water baffle between horizontal distribution muscle and H type joint, form the rigid joint, make the complete connection of joint department, effectively reduced the foundation ditch excavation back, underground continuous wall joint department gushes water, gushes the risk of sand.
Further, through with stagnant water baffle with predetermine in the end that the horizontal distribution muscle is close to the H type joint closely, the later stage only need with stagnant water baffle and H type joint seamless connection can, effectively improved construction quality and reliability.
Further, the H-shaped joint is made of I-shaped steel, the water stop baffle is made of steel plates, and the H-shaped joint is connected through welding and is convenient to construct.
Furthermore, the concrete chiseling, the seamless connection and the foundation pit excavation are carried out synchronously, the working efficiency is improved, the construction period is shortened, the construction method is simple, and the manufacturing cost is low.
Drawings
FIG. 1 is a flow chart showing the steps of the construction method for reinforcing water stop at the joint of the underground diaphragm wall according to the present invention;
FIG. 2 is a schematic structural view of a reinforced water stop structure at the joint of the diaphragm wall according to the present invention;
fig. 3 is another structural schematic view of a reinforced water stop structure at the joint of the underground diaphragm wall of the invention.
Reference numerals:
1-first-stage groove section underground continuous wall, 2-H type joint, 21-flange plate of H type joint, 3-horizontal distribution rib, 4-water stop baffle, 6-second-stage groove section underground continuous wall, 7-underground continuous wall concrete protective layer and 8-another water stop baffle.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Example one
Referring to fig. 1, the invention provides a construction method for strengthening water stop at a joint of an underground continuous wall, wherein each groove section of the underground continuous wall is constructed by adopting a groove jumping method, and the groove sections are connected by adopting an H-shaped joint, and the construction method comprises the following steps:
step S1: after the first-stage groove section underground continuous wall 1 and the H-shaped joint 2 are formed together, vertically presetting a water stop baffle 4 at the end of a horizontal distribution rib 3 of a second-stage groove section underground continuous wall 6 close to the H-shaped joint 2, and enabling the water stop baffle 4 to be attached to the H-shaped joint 2;
step S2: after the second-stage groove section underground continuous wall 6 is formed, excavating a foundation pit;
step S3: exposing the joint part of the water stop baffle 4 and the H-shaped joint 2;
step S4: and the water stop baffle 4 is connected with the joint part of the H-shaped joint 2 in a seamless way.
Next, a specific construction method for strengthening water seal at the joint of the underground diaphragm wall in the present engineering will be described as an example, please refer to fig. 1 with reference to fig. 2 to 3.
In the construction method, the construction is carried out by adopting a construction method of strengthening water stopping at a joint, specifically, in the step S1, the underground continuous wall 1 and the H-shaped joint 2 at the first-stage groove section are both poured by adopting C35P6 impervious concrete, and the main structure of the underground continuous wall generally cannot have the water seepage phenomenon under the condition that the concrete compactness of the main body of the underground continuous wall does not have the quality problem.
Preferably, in step S1, for the end of the horizontal distribution muscle 3 of presetting stagnant water baffle 4 in second phase trough section underground continuous wall 6, when the steel reinforcement cage of second phase trough section underground continuous wall 6 is shaped, just locate stagnant water baffle 4 on the horizontal distribution muscle 3 of steel reinforcement cage, later hang the steel reinforcement cage into second phase trough section again, the preferred, under the prerequisite that does not influence the enhancement stagnant water effect, only the end of the horizontal distribution muscle 3 that is close to the foundation pit face set up stagnant water baffle 4 can, specifically, the processing of the steel reinforcement cage of second phase trough section underground continuous wall 6 is according to following order: laying transverse ribs firstly, laying longitudinal ribs secondly, welding a bottom layer protection cushion block firmly, welding a middle truss, welding an upper layer longitudinal rib middle connection rib and a surface layer transverse rib, welding a lockage rib, hanging ribs, welding an embedded part finally, and welding a middle embedded part positioning horizontal distribution rib 3 simultaneously.
As a preferred embodiment of the construction method for strengthening water stop at the joint of the underground continuous wall, in step S1, the height of the water stop baffle 4 needs to be matched with the elevation of the underground continuous wall, so that the bottom of the water stop baffle 4 can be vertically arranged from the bottom of the trough section to the top of the trough section when the reinforcement cage is hoisted subsequently. With reference to fig. 2, preferably, in the process of constructing the underground continuous wall by the conventional trough jump method, the portion of the horizontal distribution rib 3 near the H-shaped joint 2 is bent toward the inner side of the reinforcement cage to be close to the flange plate 21 near the H-shaped joint 2, which is different from the case that the H-shaped joint 2 and the horizontal distribution rib are directly connected in the underground continuous wall of the first-stage trough section, so that the water stop baffle 4 can be arranged outside the horizontal distribution rib 3 at the bent position, so that the water stop baffle 4 can be abutted against the outer edge of the flange plate 21 of the H-shaped joint 2 for seamless connection when the reinforcement cage is placed into the second-stage trough section in the future.
It should be noted that the hoisting of the steel reinforcement cage adopts a mode that the main hoisting and the auxiliary hoisting are mutually matched, and the steel reinforcement cage is hoisted into the secondary trough section by the main hoisting after being erected. In the groove entering process, the water stopping baffle 4 is slowly put in, cannot be lifted and dropped, is forcibly put in, and is strictly controlled to be put down on the guide wall, so that the water stopping baffle 4 can be ensured to touch the bottom, enter the bottom of the foundation pit and be attached to and abutted against the outer edge of the flange plate 21 of the H-shaped joint 2.
In step S2 of this embodiment, the underground continuous wall 6 of the second-stage trough section and the H-shaped joint 2 are also poured with C35P6 impervious concrete, which is not described herein again.
As a preferable embodiment of the construction method for reinforcing water seal at the joint of the underground diaphragm wall, after the second-stage groove-segment underground diaphragm wall 6 is formed, in step S2, excavation of the foundation pit is performed by excavating soil back from west to east, preferably, the foundation pit is excavated by layering and partitioning and from top to bottom, and symmetric and balanced excavation is performed. Specifically, the foundation pit carries out earthwork layered excavation according to the section conditions of underground diaphragm wall sections, the excavation mainly takes mechanical excavation as a main part, manual excavation as an auxiliary part, a certain thickness is reserved at the bottom of the foundation pit and is manually cleaned, and the elevation of the bottom of the pit is strictly controlled according to the design requirements. The excavation method adopts a back excavation method, firstly excavates the earthwork at the periphery of the foundation pit to create an operation surface for the construction of the underground continuous wall section, is convenient for follow-up personnel to carry out chiseling and welding operations on the concrete protective layer 7 of the diaphragm wall, and then excavates the middle earthwork one step backwards.
As a preferable embodiment of the construction method for reinforcing water seal at the joint of the underground diaphragm wall of the present invention, in the step of exposing the joint portion of the water stop baffle 4 and the H-shaped joint 2 in step S3, the concrete at the joint portion is chiseled to the working surface, so that the concrete at the joint portion of the water stop baffle 4 and the flange plate 21 of the H-shaped joint 2 is completely removed. Specifically, after the excavation of the earthwork around the underground continuous wall on the south side of the foundation pit is completed and the working face is created, workers are arranged to chisel the concrete at the joint. The foundation pit is excavated in a layered and partitioned mode from top to bottom, the excavation working surface of each section is not more than 15m, the height of each layer of miscellaneous fill is not more than 2m, and the sludge is not more than 1 m. Preferably, the chiseling work of the concrete at the joint of the underground diaphragm wall is carried out along with the advancing of the excavation work, the concrete in the area can be chiseled after the underground diaphragm wall is excavated to a certain depth to form a working face, and the chiseling work of the concrete at the joint of the underground diaphragm wall is completed when the underground diaphragm wall is excavated to the bottom of a pit. It should be noted that the concrete protection layer needs to be completely chiseled off, and especially, the concrete at the joint of the water stop baffle 4 and the flange plate 21 of the H-shaped joint 2 cannot remain so as not to affect the welding effect. In the concrete chiseling process, if water leakage, mud flowing and other phenomena occur at the joint, chiseling should be stopped immediately, and measures such as hanging net, spraying concrete, grouting and the like are adopted to plug in time.
Preferably, in step S4, the water stop baffle 4 and the flange plate 21 of the H-shaped joint 2 are seamlessly connected to each other, and the concrete chiseling operation is performed simultaneously, and after the concrete chiseling operation at the joint is performed, the seamless connection is performed simultaneously, so as to ensure that the seamless connection of the corresponding area is completed at the current working face before the next soil layer is excavated until the construction is gradually performed to the bottom of the pit.
As a preferred embodiment of the construction method for strengthening water stop at the joint of the underground diaphragm wall of the present invention, before the step of seamlessly connecting the water stop baffle 4 and the flange plate 21 of the H-joint 2 to form the rigid joint in step S8, the method includes checking the gap between the water stop baffle 4 and the flange plate 21 of the H-joint 2, and if the gap is too large, the seamless connection cannot be achieved, please refer to fig. 3, at least another water stop baffle 8 for blocking the gap is located at the gap and the water stop baffle 4 and the flange plate 21 of the H-joint 2 are seamlessly connected to form the rigid joint.
In this embodiment, stagnant water baffle 4 adopts the stagnant water steel sheet, and the H type connects and adopts the I-steel, for realizing seamless connection, guarantees the stagnant water quality, and the stagnant water steel sheet welds in advance in 3 ends of horizontal distribution muscle, and the laminating department of stagnant water steel sheet and the flange board of I-steel carries out the single face full weld, and weld length is equal to the height of stagnant water steel sheet more than the foundation ditch bottom, realizes from stagnant water steel sheet top to the whole welding of foundation ditch bottom and seals up.
It should be noted that, seamless connection is realized by welding, the welding quality directly affects the water stopping effect, welding slag is removed first after welding is completed, defects such as slag inclusion, air hole welding beading and the like on the surface of a crack are not allowed to occur, and in addition, the welding quality is also affected by the following factors:
the welding power supply is used as an important influence factor in the welding process, and the welding power supply needs to ensure that the performance is poor and good weldment cannot be generated inevitably. When the arc striking performance of the welding machine is poor and the arc combustion is unstable, the stability of the technological parameters cannot be ensured, the welding process cannot be normally carried out, and the welding quality cannot be ensured.
The proper selection of the welding current directly affects the final quality of the weld. The welding current is too large, which can improve productivity and increase penetration depth, but the defects of meat biting, welding beading and the like are easy to occur, and the pore tendency is increased. The welding current is too small, the penetration depth is reduced, and the defects of incomplete penetration, poor fusion, slag inclusion, dislocation and the like are easy to occur.
The welding speed is the main parameter for characterizing the welding production efficiency. The reasonable selection of the welding speed is particularly important for ensuring the welding quality. The welding speed is too fast, so that the temperature of a molten pool is insufficient, and the defects of incomplete penetration, incomplete fusion, poor weld joint forming and the like are easily caused. The welding speed is too slow, so that the high temperature time is long, the width of a heat affected zone is increased, the crystal grains of a welding joint become coarse, the mechanical property is reduced, the deformation of a weldment is increased, and meanwhile, the thickness of each layer is increased due to too slow welding speed, so that slag backflow is caused. Forming slag inclusion and other defects.
In the welding production process, the low technical level of the single-side welding operation of a welder means that the operation methods of the strip conveying method of the bottom layer, the angle of the welding rod, the joint method, the strip conveying method of the middle layer and the cover layer, the joint, the ending and the like are not skilled, which is one of the important reasons for poor welding quality. Before welding, the oil, rust and water on the water stop steel plate and the I-shaped steel are not strictly cleaned, and particularly, the residual concrete can promote the welding seam to generate a large amount of air holes, so that the quality of the welding seam cannot meet the requirement.
In field operation, strict control is required to avoid similar welding problems.
Preferably, after welding, all exposed steel members are required to be subjected to rust prevention treatment, concrete is cleaned firstly, the surfaces of the steel members are subjected to rust removal, and then all the steel members are subjected to rust prevention treatment by fluorocarbon paint, so that the service life of the structure is prolonged.
The invention also provides a water stop structure at the joint of the underground diaphragm wall, which comprises:
the H-shaped joint 2 is used for connecting the first-stage groove section underground continuous wall 1 and the second-stage groove section underground continuous wall 6;
along vertical predetermine in second phase trough section underground continuous wall 6 adjacent stagnant water baffle 4 that closes on the 3 ends of horizontal distribution muscle of H type joint 2, stagnant water baffle 4 and H type joint 2 laminating are in laminating position seamless connection rigid joint.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (6)
1. A construction method for strengthening water stop at joints of underground continuous walls is characterized by comprising the following steps of:
after the first-stage groove section underground continuous wall and the H-shaped joint are formed together, vertically presetting a water stop baffle plate at the end of a horizontal distribution rib of a second-stage groove section underground continuous wall close to the H-shaped joint, and attaching the water stop baffle plate to the H-shaped joint;
after the second-stage groove section underground continuous wall is formed, excavating a foundation pit;
exposing the joint part of the water stop baffle and the H-shaped joint;
seamlessly connecting the water stop baffle with the joint part of the H-shaped joint to form a rigid joint;
in the step of seamlessly connecting the joint part of the water stop baffle and the H-shaped joint to form the rigid joint, the method further comprises the step of checking a gap between the water stop baffle and the H-shaped joint, and if the gap is too large and cannot be seamlessly connected, at least one other water stop baffle for shielding the gap is arranged at the gap and is seamlessly connected with the water stop baffle and the H-shaped joint;
The part of the horizontal distribution rib close to the H-shaped joint bends towards the inner side of the reinforcement cage to be close to the flange plate close to the H-shaped joint.
2. The construction method for reinforcing water stop at the joint of the underground continuous wall as claimed in claim 1, wherein in the step of presetting the water stop baffle vertically, the height of the water stop baffle is the same as that of the underground continuous wall and is vertically arranged from the bottom of the trough section to the top of the trough section.
3. The method as claimed in claim 1, wherein the step of attaching the water stop plate to the H-shaped joint comprises attaching the water stop plate adjacent to the excavation side of the foundation pit to an outer edge of a flange plate of the H-shaped joint.
4. The construction method for reinforcing and sealing water at the joint of the underground continuous wall as claimed in claim 1, wherein the step of excavating the foundation pit comprises the steps of layering and partitioning, excavating the earthwork around the underground continuous wall layer by layer from top to bottom to form a construction working surface to the bottom of the foundation pit, and then gradually excavating the middle earthwork.
5. The method as claimed in claim 4, wherein the step of exposing the joint portion of the water stop barrier and the H-shaped joint comprises completely removing concrete at the joint portion of the water stop barrier and the H-shaped joint in the corresponding excavated area from each layer of the construction work surface.
6. The construction method for reinforcing and sealing water at the joint of the underground diaphragm wall as claimed in claim 5, wherein in the step of seamlessly connecting the sealing water baffle with the joint part of the H-shaped joint to form the rigid joint, the construction method comprises seamlessly connecting the sealing water baffle exposed after chiseling concrete in the corresponding excavation area with the joint part of the H-shaped joint on each layer of the construction working surface.
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| CN203834524U (en) * | 2014-03-31 | 2014-09-17 | 广西建工集团第五建筑工程有限责任公司 | Concrete streaming preventing device for H-type steel connector grout stop plate at underground continuous wall chase section |
| CN107687166A (en) * | 2017-10-18 | 2018-02-13 | 太原理工大学 | Diaphram wall is anti-to stream, water-impervious I-shaped steel joint structure and construction method |
| CN109653192B (en) * | 2018-12-28 | 2021-02-26 | 江苏城归设计有限公司 | Assembled underground continuous wall and construction method thereof |
| CA3068018C (en) * | 2019-04-19 | 2022-09-20 | Bernard Mcnamara | Waterstop with dynamic-sealing hydrophilic thermoplastic expansible soft flanges |
| CN111827265A (en) * | 2020-07-21 | 2020-10-27 | 重鑫岩土技术(上海)有限公司 | Construction method of steel reinforced concrete underground continuous wall |
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