CN116335173A - Foundation pit waterproof curtain and construction method thereof - Google Patents

Foundation pit waterproof curtain and construction method thereof Download PDF

Info

Publication number
CN116335173A
CN116335173A CN202310327937.9A CN202310327937A CN116335173A CN 116335173 A CN116335173 A CN 116335173A CN 202310327937 A CN202310327937 A CN 202310327937A CN 116335173 A CN116335173 A CN 116335173A
Authority
CN
China
Prior art keywords
water stop
grouting
foundation pit
half hoop
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310327937.9A
Other languages
Chinese (zh)
Inventor
高志诚
潘巍巍
李兴岩
杨碧定
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou Intercity Engineering Consulting Co ltd
Original Assignee
Huizhou Intercity Engineering Consulting Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huizhou Intercity Engineering Consulting Co ltd filed Critical Huizhou Intercity Engineering Consulting Co ltd
Priority to CN202310327937.9A priority Critical patent/CN116335173A/en
Publication of CN116335173A publication Critical patent/CN116335173A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • E02D19/18Restraining 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
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • 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
    • E02D31/06Protective 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 corrosion by soil or water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0018Cement used as binder
    • E02D2300/002Concrete
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0026Metals
    • E02D2300/0029Steel; Iron

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

The application discloses foundation ditch waterproof curtain and construction method thereof relates to waterproof curtain construction technical field, and it includes a plurality of stagnant water posts, and a plurality of stagnant water posts are arranged along a week of foundation ditch, and is adjacent stagnant water post interlock each other sets up, the top of stagnant water post is provided with the reinforcing bar group, the reinforcing bar group includes a plurality of reinforcing bars one, still includes the slip casting board, the last a plurality of mounting hole that has run through of slip casting board, a plurality of mounting hole and a plurality of reinforcing bar one-to-one set up, reinforcing bar one install in corresponding in the mounting hole, install the slip casting pipe that is used for the slip casting on the slip casting board, the water conservancy diversion hole that supplies the thick liquid to flow has been run through on the slip casting board. The application has the effect of promoting the anchor effect of reinforcing bar group.

Description

Foundation pit waterproof curtain and construction method thereof
Technical Field
The application relates to the technical field of waterproof curtain construction, in particular to a waterproof curtain for a foundation pit and a construction method thereof.
Background
The waterproof curtain is a general term of a waterproof series at the periphery of the main body of the building engineering, can reduce continuous waterproof bodies adopted by groundwater at the bottom and on the side wall of the foundation pit when the groundwater permeates into the foundation pit, and can also reduce the possibility of deformation of the foundation pit due to soil pressure. The method is commonly used for construction projects such as hydropower stations, high-rise buildings, deep foundation pit underground buildings and the like.
The related art publication No. CN113136886A discloses a foundation pit waterproof curtain and a construction method thereof, wherein the foundation pit waterproof curtain comprises a plurality of waterproof columns and a continuous beam arranged above the waterproof columns, the waterproof columns are arranged along a circle of the edge of a foundation pit, a steel bar group is embedded in the continuous beam and consists of a plurality of steel bars in parallel, one end of the steel bar group is positioned in soil, and the other end of the steel bar group extends into the foundation pit.
In the structure, as one end of the steel bar set is positioned in the soil, the steel bars are directly positioned in the soil, so that not only is the bond effect of the soil on the steel bars limited, but also the soil with poor pH value has certain corrosion influence on the steel bars, and the anchoring effect of the steel bar set is reduced.
Disclosure of Invention
In order to improve the anchoring effect of the reinforcing steel bar set, a foundation pit waterproof curtain and a construction method thereof are provided.
On the one hand, the foundation pit waterproof curtain provided by the application adopts the following technical scheme:
the utility model provides a foundation ditch waterproof curtain, includes a plurality of stagnant water posts, and a plurality of stagnant water posts are arranged along the week of foundation ditch, and is adjacent stagnant water post interlock each other sets up, the top of stagnant water post is provided with the reinforcing bar group, the reinforcing bar group includes a plurality of reinforcing bars one, still includes the slip casting board, run through on the slip casting board and seted up a plurality of mounting hole, a plurality of mounting hole and a plurality of reinforcing bar one-to-one setting, reinforcing bar one is installed in corresponding in the mounting hole, install the slip casting pipe that is used for the slip casting on the slip casting board, run through on the slip casting board and set up the water conservancy diversion hole that supplies the thick liquid to flow.
Through the technical scheme, after the water stop column is poured, the side wall of the foundation pit is drilled with the anchoring hole for installing the reinforcing steel bar group, a plurality of reinforcing steel bars are correspondingly penetrated into the installing holes on the grouting plate one by one, the grouting pipe is installed on the grouting plate, the reinforcing steel bar group provided with the grouting plate and the grouting pipe is inserted into the anchoring hole, finally, the grouting pipe is connected onto grouting equipment, grout is injected into the anchoring hole along the grouting pipe, and in the grouting process, the grout can flow along the guide holes to the gaps until the grouting in the anchoring hole wraps the reinforcing steel bar group.
After the slurry is hardened and formed, on one hand, as the reinforcing steel bar group is covered by the hardened slurry, the possibility of corrosion of the reinforcing steel bars in the reinforcing steel bar group is reduced under the protection effect of the hardened slurry; on the other hand, the slurry before hardening is contacted with the soil to be bonded with the soil, and the soil around the slurry, the slurry and the steel bars in the steel bar group form a whole after hardening, so that the bond wrapping effect of the soil on the steel bar group is increased, and the anchoring effect of the steel bar group is improved.
The present application may be further configured in a preferred example to: grouting holes are formed in the grouting plate in a penetrating mode, and the grouting pipe is slidably installed in the grouting holes.
Through the technical scheme, the operator is through installing the grouting pipe in the grouting hole, and at grouting in-process, the operator slowly pulls the grouting pipe outwards, and after the grouting pipe breaks away from the grouting hole, the thick liquid can flow along grouting hole and water conservancy diversion hole to space department, has increased the cross section of thick liquid to the packing efficiency of thick liquid has been promoted.
The present application may be further configured in a preferred example to: the grouting device comprises a grouting plate, and is characterized in that a plurality of plugging rods are arranged on the grouting plate, the plugging rods and the diversion holes are arranged in a one-to-one correspondence mode, and the plugging rods are slidably installed in the corresponding diversion holes.
Through the technical scheme, before the reinforcing bar group is inserted into the anchoring hole by an operator, the blocking rod is inserted into the overflow hole, and then the reinforcing bar group provided with the blocking rod and the grouting pipe is inserted into the anchoring hole, so that the possibility that the blocking hole is blocked by soil and broken stone is reduced under the blocking action of the blocking rod in the process that the reinforcing bar group is inserted into the anchoring hole.
Before the grouting is started, an operator withdraws the plugging rod from the diversion hole, so that the diversion hole is in a unblocked state, the grouting pipe and grouting equipment are connected, and the grouting is started, and therefore the possibility that the grouting compactness of the anchoring hole is poor due to the plugging of the diversion hole before the grouting can be reduced.
The present application may be further configured in a preferred example to: the structure reinforcing steel bars are buried in the water stop columns, each structure reinforcing steel bar comprises a plurality of main reinforcements and a plurality of stirrups, the stirrups are distributed from top to bottom along the water stop columns, the main reinforcements are distributed along the circumference of the stirrups, the stirrups in the adjacent water stop columns are arranged in one-to-one correspondence, the stirrups in the adjacent water stop columns are overlapped to form an overlapped area, and the main reinforcements in the adjacent water stop columns are arranged in the overlapped area.
Through the technical scheme, as part of main reinforcements in the adjacent water stop columns are arranged in the overlapping area, stirrups with corresponding heights are mutually meshed through the main reinforcements in the overlapping area, so that a reinforcing steel bar encryption effect is equivalent to be formed in the overlapping area, and the connection strength of the adjacent water stop columns is effectively improved.
The present application may be further configured in a preferred example to: the first steel bars are fixedly connected to the main steel bars, the top of the water stop column is provided with an extending part in a casting mode, the main steel bars extend into the extending part, and the first steel bars in the steel bar groups are buried in the corresponding extending parts.
Through above-mentioned technical scheme, because first and slip casting fixed connection of reinforcing bar, and the reinforcing bar group buries in the extension, consequently promoted the wholeness of reinforcing bar group and water stop post.
The present application may be further configured in a preferred example to: the connecting assembly comprises a connecting rod and two anchoring rods, wherein the two anchoring rods are respectively and fixedly connected to two ends of the connecting rod, two ends of the connecting rod respectively extend into the adjacent water stopping columns, and the two anchoring rods are respectively buried in the adjacent water stopping columns.
Through above-mentioned technical scheme, because the anchor pole buries respectively in adjacent water stop post, and under the anchor effect of anchor pole, promoted the wholeness of two adjacent water stop posts.
The present application may be further configured in a preferred example to: the anchor rod is provided with a connecting hoop, the connecting hoop comprises a first half hoop and a second half hoop, the first half hoop is arranged on the anchor rod, one end of the first half hoop and one end of the second half hoop are hinged to each other, a fixing piece is arranged between the other end of the first half hoop and the other end of the second half hoop, and the first half hoop and the second half hoop are fixed through the fixing piece.
Through the technical scheme, an operator installs the anchoring rod on the stirrup through the connecting hoop, so that the possibility of displacement of the anchoring rod caused by concrete impact or concrete flowing in the casting process of the water stop column is reduced. When an operator installs the connecting hoops, the hoops are extruded first to enable the hoops to elastically deform so that the anchoring rods are clamped in the hoops through the first half hoops, and then the first half hoops and the second half hoops are fixed through the fixing pieces, so that the fixing of the anchoring rods is completed.
The present application may be further configured in a preferred example to: the fixing piece comprises a bolt and a nut, and the first half hoop and the second half hoop are fixedly connected through the bolt and the nut.
Through above-mentioned technical scheme, half hoop one and half hoop two pass through the bolt, nut is fixed for the anchor pole fixed connection has reduced the possibility that the anchor pole takes place the displacement on the stirrup.
The present application may be further configured in a preferred example to: the first half hoop and the second half hoop are respectively provided with a sliding groove in a penetrating mode, and the bolts are slidably installed in the sliding grooves.
Through above-mentioned technical scheme, because bolt slidable mounting is in the sliding tray, when the cross-section radius of stirrup is great like this, operating personnel is through sliding the bolt in the sliding tray for operating personnel can install the stirrup that cross-section radius is great between half hoop one and half hoop two, thereby promoted the application scope of anchor pole.
On the other hand, the application provides a construction method of a foundation pit waterproof curtain, which adopts the following technical scheme.
A construction method of a foundation pit waterproof curtain comprises the following steps:
s1, drilling pile holes for pouring the water stop column, so that adjacent pile holes are meshed with each other;
s2, installing the main reinforcements and the stirrups in pile holes to form the overlapping area, so that part of the main reinforcements in adjacent pile holes are positioned in the overlapping area;
s3, installing the anchoring rod on the corresponding stirrup in the adjacent pile hole through the bolt and the nut;
s4, pouring concrete in the pile hole, and hardening to form the water stop column;
s5, drilling an anchoring hole for burying the steel bar set, and inserting the steel bar set provided with the grouting pipe and the plugging rod into the anchoring hole;
s6, extracting the plugging rod from the diversion hole, grouting along the grouting pipe into the anchoring hole, and gradually extracting the grouting pipe outwards while grouting;
s7, fixedly connecting the first steel bar to the main steel bar;
s8, roughening the top of the water stop column, and pouring the extension part upwards.
In summary, the present application includes the following beneficial technical effects:
1. the reinforced bar group is covered by the hardened slurry, so that the possibility of corrosion of the reinforced bars in the reinforced bar group is reduced under the protection of the hardened slurry;
2. after the slurry is hardened, soil around the slurry, the slurry and the steel bars in the steel bar group form a whole, so that the bond wrapping effect of the soil on the steel bar group is increased, and the anchoring effect of the steel bar group is improved;
3. because the partial main ribs in the adjacent water stop columns are arranged in the overlapping area, after the water stop columns are cast and molded, the connection strength between the two adjacent water stop columns is effectively improved.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application, mainly illustrating the construction of the water stop column and the extension.
Fig. 2 is a schematic structural view of a reinforcing bar set according to an embodiment of the present application, mainly illustrating the construction of a grouting plate, a grouting pipe, and a plugging rod.
Fig. 3 is a schematic structural view of structural reinforcement adjacent to the water stop column in the embodiment of the present application, mainly illustrating the construction of the main reinforcement and the stirrup.
Fig. 4 is a schematic view (top view) of the structure of fig. 3 at another angle, mainly illustrating the configuration of the overlapping region.
Fig. 5 is a schematic structural view of the connecting assembly in the embodiment of the present application, mainly illustrating the configuration of the connecting rod and the anchoring rod.
Fig. 6 is a schematic structural view of the connecting band in the embodiment of the present application, mainly illustrating the structures of the half band one, the half band two, and the sliding groove.
Reference numerals illustrate:
1. stopping water column; 11. an extension; 2. a steel bar set; 21. a first reinforcing steel bar; 3. grouting plate; 31. a mounting hole; 32. grouting pipe; 33. a deflector aperture; 34. grouting holes; 35. a plugging rod; 4. structural steel bars; 41. a main rib; 42. stirrups; 421. a laminating area; 5. a connecting plate; 51. a handle; 6. a connection assembly; 61. a connecting rod; 62. an anchor rod; 7. a connecting hoop; 71. half hoop I; 711. a sliding groove; 72. a second half hoop; 8. a fixing member; 81. a bolt; 82. and (3) a nut.
Detailed Description
The present application is described in further detail below in conjunction with fig. 1-6.
The embodiment of the application discloses a foundation pit waterproof curtain.
Referring to fig. 1, a foundation pit waterproof curtain comprises waterproof columns 1 arranged along the periphery of a foundation pit, wherein the waterproof columns 1 are formed by using structural steel bars 4 and concrete as main parts, namely, the structural steel bars 4 are buried in the concrete, and every two adjacent waterproof columns 1 are mutually meshed.
Referring to fig. 1 and 2, a steel bar set 2 is arranged above a water stop column 1, the steel bar set 2 comprises four steel bars 21, the four steel bars 21 are identical in length and are arranged side by side, three grouting plates 3 are arranged on the steel bar set 2, the grouting plates 3 are steel plates with circular sections, and three mounting plates are uniformly arranged along the length direction of the steel bars 21. Because the structure of each grouting plate 3 is the same, only one grouting plate 3 and its related structure will be described, and the rest grouting plates 3 will not be described in detail.
Referring to fig. 1 and 2, four mounting holes 31 are formed in the grouting plate 3 in a penetrating manner, the four mounting holes 31 are uniformly distributed along the circumferential direction of the grouting plate 3, the four mounting holes 31 and four reinforcing steel bars 21 are arranged in a one-to-one correspondence manner, the reinforcing steel bars 21 are mounted in the corresponding mounting holes 31, and the reinforcing steel bars 21 are welded and fixed at the corresponding mounting holes 31 on the grouting plate 3.
Referring to fig. 1 and 2, a grouting hole 34 is formed through the center of the grouting plate 3, and a grouting pipe 32 for grouting is slidably installed in the grouting hole 34. Four guide holes 33 are formed in the grouting plate 3 in a penetrating mode, the four guide holes 33 are evenly distributed along the circumferential direction of the grouting plate 3, the guide holes 33 and the mounting holes 31 are arranged at intervals, the plugging rods 35 are slidably mounted in each guide hole 33, the plugging rods 35 are made of rubber with smooth outer skins, the texture is light, and the grouting plate is easy to carry. One end of the four plugging rods 35 close to the water stop column 1 is fixedly connected to the connecting plate 5, and one end of the connecting plate 5 far away from the plugging rods 35 is fixedly connected with a handle 51.
After the pouring of the water stop column 1 is completed, an anchor hole for installing the reinforcing steel bar set 2 is drilled on the side wall of the foundation pit, then the reinforcing steel bar set 2 provided with the grouting plate 3, the grouting pipe 32 and the plugging rod 35 is inserted into the anchor hole, and the possibility that the diversion hole 33 is plugged by soil and broken stone is reduced under the plugging action of the plugging rod 35.
When the operator needs grouting, the handle 51 is held to pull the blocking rod 35 outwards to release the blocking state of the guide hole 33, the grouting pipe 32 and grouting equipment are connected again, grouting is started, during grouting, the operator gradually slowly withdraws the grouting pipe 32 outwards, and after the grouting pipe 32 is separated from the grouting hole 34, grout can flow to a gap along the grouting hole 34 and the guide hole 33 until the grout covers the steel bar set 2.
After the slurry is hardened and formed, the reinforcing steel bar group 2 reduces the possibility of corrosion of the reinforcing steel bars 21 in the reinforcing steel bar group 2 under the protection of the hardened slurry. After the slurry is hardened, soil around the slurry, the slurry and the first steel bars 21 in the steel bar set 2 form a whole, so that the bond effect of the soil on the steel bar set 2 is increased, and the anchoring effect of the steel bar set 2 is improved.
Referring to fig. 1, 3 and 4, the structural reinforcement 4 includes a plurality of main reinforcements 41 and a plurality of stirrups 42, the plurality of stirrups 42 are uniformly distributed from top to bottom along the water stop column 1, and the plurality of main reinforcements 41 are uniformly arranged along the circumferential direction of the stirrups 42. The main reinforcement 41 and the stirrup 42 in the same water stop column 1 are bound and fixed, and the top of the main reinforcement 41 is higher than the top surface of the water stop column 1. The stirrups 42 in the adjacent water stop column 1 are arranged in a one-to-one correspondence manner, the stirrups 42 with corresponding heights in the adjacent water stop column 1 are overlapped to form an overlapped area 421, and part of main ribs 41 in the adjacent water stop column 1 are arranged in the overlapped area 421, so that the connection strength of the adjacent water stop column 1 can be effectively improved after the construction of the water stop column 1 is completed.
As described with reference to fig. 1, the first reinforcing steel bars 21 are fixedly connected to the main reinforcing steel bars 41, after the water stop column 1 is cast and formed, the top of the water stop column 1 is roughened, and the extending part 11 is formed upwards through concrete casting, the main reinforcing steel bars 41 extend into the extending part 11, and the first reinforcing steel bars 21 in the reinforcing steel bar group 2 are buried in the corresponding extending parts 11, so that the integrity of the reinforcing steel bar group 2 and the water stop column 1 is improved.
Referring to fig. 1, 4 and 5, a plurality of groups of connecting assemblies 6 are buried between two adjacent water stop posts 1, the plurality of groups of connecting assemblies 6 are uniformly distributed along the vertical direction, and each group of connecting assemblies 6 is in an I shape. Each group of connecting components 6 comprises a connecting rod 61 and two anchoring rods 62, wherein the anchoring rods 62 and the connecting rods 61 are made of steel bars, two ends of each connecting rod 61 are fixedly connected to the middle parts of the two anchoring rods 62 respectively, the anchoring rods 62 and the connecting rods 61 are fixed through welding, two ends of each connecting rod 61 extend into the adjacent water stop posts 1 respectively, the two anchoring rods 62 are buried in the adjacent water stop posts 1 respectively, and the connecting rods 61 penetrate through the main ribs 41 in the overlapping area 421. Under the anchoring action of the anchoring rod 62, the integrity of the two adjacent water stop columns 1 is improved.
Referring to fig. 4 and 6, each of the anchor rods 62 is provided at both ends thereof with a connecting band 7, the connecting band 7 including a first half band 71 and a second half band 72, the first half band 71 being fixedly coupled to the anchor rod 62, one end of the first half band 71 and one end of the second half band 72 being hinged to each other, and a fixing member 8 being provided between the other end of the first half band 71 and the other end of the second half band 72. The fixing piece 8 comprises a bolt 81 and a nut 82, and the first half hoop 71 and the second half hoop 72 are fixedly connected through the bolt 81 and the nut 82, so that the possibility of displacement of the anchoring rod 62 caused by concrete impact or concrete flowing in the casting process of the water stop column 1 is reduced.
Referring to fig. 4 and 6, the first half hoop 71 and the second half hoop 72 are respectively provided with a vertically arranged sliding groove 711 in a penetrating manner, and the bolt 81 is slidably mounted in the corresponding sliding groove 711 along the vertical direction, so that the stirrup 42 with a larger section radius is mounted between the first half hoop 71 and the second half hoop 72, and the application range of the connecting hoop 7 is improved.
The embodiment of the application discloses a construction method of a foundation pit waterproof curtain, which comprises the following steps:
s1, drilling pile holes for pouring the water stop column 1 so that adjacent pile holes are meshed with each other;
s2, installing main reinforcements 41 and stirrups 42 in pile holes to form a superposition area 421, so that part of main reinforcements 41 in adjacent pile holes are positioned in the superposition area 421;
s3, installing the anchor rods 62 on the corresponding stirrups 42 in the adjacent pile holes through bolts 81 and nuts 82;
s4, pouring concrete in the pile hole, and hardening to form a water stop column 1;
s5, drilling an anchoring hole for embedding the reinforcing steel bar set 2, and inserting the reinforcing steel bar set 2 with the grouting pipe 32 and the plugging rod 35 into the anchoring hole;
s6, extracting the plugging rod 35 from the diversion hole 33, grouting into the anchoring hole along the grouting pipe 32, and gradually extracting the grouting pipe 32 outwards while grouting;
s7, fixedly connecting the first steel bar 21 to the main steel bar 41;
and S8, roughening the top of the water stop column 1, and pouring the extension part 11 upwards.
The embodiments of the present embodiment are all preferred embodiments of the present application, and do not sequentially limit the protection scope of the present application, so: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The utility model provides a foundation ditch water-stop curtain, includes a plurality of stagnant water posts (1), a plurality of stagnant water posts (1) arrange along the week of foundation ditch, and is adjacent stagnant water post (1) interlock each other sets up, the top of stagnant water post (1) is provided with reinforcing bar group (2), reinforcing bar group (2) include a plurality of reinforcing bars one (21), its characterized in that: still including slip casting board (3), a plurality of mounting hole (31) have been run through on slip casting board (3), a plurality of mounting hole (31) and a plurality of reinforcing bar one (21) one-to-one setting, reinforcing bar one (21) install in corresponding in mounting hole (31), install grouting pipe (32) that are used for the slip casting on slip casting board (3), run through on slip casting board (3) and offered diversion hole (33) that supply thick liquid to flow.
2. The foundation pit water stop curtain according to claim 1, wherein: grouting holes (34) are formed in the grouting plate (3) in a penetrating mode, and the grouting pipe (32) is slidably installed in the grouting holes (34).
3. The foundation pit water stop curtain according to claim 2, wherein: be provided with a plurality of shutoff pole (35) on slip casting board (3), a plurality of shutoff pole (35) and a plurality of water conservancy diversion hole (33) one-to-one setting, shutoff pole (35) slidable mounting in corresponding in water conservancy diversion hole (33).
4. The foundation pit water stop curtain according to claim 1, wherein: the water stop column is characterized in that structural steel bars (4) are buried in the water stop column (1), each structural steel bar (4) comprises a plurality of main steel bars (41) and a plurality of stirrups (42), the stirrups (42) are distributed from top to bottom along the water stop column (1), the main steel bars (41) are arranged along the circumference of the stirrups (42), the stirrups (42) in the water stop column (1) are adjacent to each other, the stirrups (42) with the corresponding heights in the water stop column (1) are overlapped to form an overlapped area (421), and the stirrups (42) in the water stop column (1) are adjacent to each other, and the main steel bars (41) are arranged in the overlapped area (421).
5. The foundation pit water stop curtain of claim 4, wherein: the first steel bars (21) are fixedly connected to the main steel bars (41), the top of the water stop column (1) is provided with an extension portion (11) in a casting mode, the main steel bars (41) extend into the extension portion (11), and the first steel bars (21) in the steel bar group (2) are buried in the corresponding extension portions (11).
6. The foundation pit water stop curtain of claim 4, wherein: the connecting assembly (6) is buried between the adjacent water stopping columns (1), the connecting assembly (6) comprises a connecting rod (61) and two anchoring rods (62), the two anchoring rods (62) are respectively and fixedly connected to two ends of the connecting rod (61), two ends of the connecting rod (61) respectively extend into the adjacent water stopping columns (1), and the two anchoring rods (62) are respectively buried in the adjacent water stopping columns (1).
7. The foundation pit water stop curtain of claim 6, wherein: be provided with on anchor pole (62) and connect hoop (7), connect hoop (7) including half hoop one (71) and half hoop two (72), half hoop one (71) in install in on anchor pole (62), half hoop one (71) one end with half hoop two (72) one end articulates each other, half hoop one (71) the other end with be provided with mounting (8) between half hoop two (72) the other end, half hoop one (71) with half hoop two (72) are passed through mounting (8) are fixed.
8. The foundation pit water stop curtain of claim 7, wherein: the fixing piece (8) comprises a bolt (81) and a nut (82), and the first half hoop (71) and the second half hoop (72) are fixedly connected through the bolt (81) and the nut (82).
9. The foundation pit water stop curtain of claim 8, wherein: the first half hoop (71) and the second half hoop (72) are respectively provided with a sliding groove (711) in a penetrating mode, and the bolt (81) is slidably installed in the sliding grooves (711).
10. A construction method of a foundation pit waterproof curtain, based on the foundation pit waterproof curtain as claimed in any one of claims 1 to 9, characterized in that: comprises the following steps of;
s1, drilling pile holes for pouring the water stop column (1) so that adjacent pile holes are meshed with each other;
s2, installing the main ribs (41) and the stirrups (42) in pile holes to form the overlapping area (421) so that part of the main ribs (41) in adjacent pile holes are positioned in the overlapping area (421);
s3, installing the anchoring rod (62) on the corresponding stirrup (42) in the adjacent pile hole through the bolt (81) and the nut (82);
s4, pouring concrete in the pile hole, and hardening to form the water stop column (1);
s5, drilling an anchoring hole for burying the steel bar set (2), and inserting the steel bar set (2) provided with the grouting pipe (32) and the plugging rod (35) into the anchoring hole;
s6, extracting the plugging rod (35) from the diversion hole (33), grouting into the anchoring hole along the grouting pipe (32), and gradually extracting the grouting pipe (32) outwards while grouting;
s7, fixedly connecting the first steel bar (21) to the main steel bar (41);
s8, roughening the top of the water stop column (1) and pouring the extension part (11) upwards.
CN202310327937.9A 2023-03-29 2023-03-29 Foundation pit waterproof curtain and construction method thereof Pending CN116335173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310327937.9A CN116335173A (en) 2023-03-29 2023-03-29 Foundation pit waterproof curtain and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310327937.9A CN116335173A (en) 2023-03-29 2023-03-29 Foundation pit waterproof curtain and construction method thereof

Publications (1)

Publication Number Publication Date
CN116335173A true CN116335173A (en) 2023-06-27

Family

ID=86889149

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310327937.9A Pending CN116335173A (en) 2023-03-29 2023-03-29 Foundation pit waterproof curtain and construction method thereof

Country Status (1)

Country Link
CN (1) CN116335173A (en)

Similar Documents

Publication Publication Date Title
US11293183B2 (en) Precast column base joint and construction method therefor
KR101671123B1 (en) Tunnel construction method by using pre-support and post-support, and suitable device therefor
US6536181B1 (en) Composite retaining wall and construction method for underground structure
CN100567659C (en) The base configuration of iron tower
KR101973565B1 (en) Sheathing method for constructing both sheathing wall and cutoff collar by welding cutoff plate to phc pile with longitudinal plate
KR20090094971A (en) Under ground top-down method
CN110468727B (en) Temporary prestress tensioning pedestal and lifting point integrated structure of segmental beam and construction method
CN110820762A (en) Construction method of stiff-core curtain pile and retaining wall pile anchor combined supporting structure
KR20170061061A (en) Tunnel construction method by using pre-support and post-support, and suitable device therefor
CN107366289B (en) Foundation pit concrete support pile structure formed by hole digging and pouring in site and manufacturing method thereof
CN113417300A (en) Slope support system and construction method thereof
CN113107019A (en) Pre-buried anchor rod connecting structure passing through pre-built building and construction method thereof
KR20070044839A (en) Construction work method of a sewers conduit compound foundation and that structure
CN217710803U (en) Anti-floating reinforcing comprehensive treatment system for underground garage foundation
CN216713017U (en) Prefabricated stock waist rail
CN116335173A (en) Foundation pit waterproof curtain and construction method thereof
CN210066763U (en) Foundation pit side wall structure reinforcing and supporting device
CN210421155U (en) Precast concrete base of corrugated steel plate comprehensive pipe gallery
CN113356289A (en) Deep foundation pit brick chimney reinforcing method and ring beam reinforcing structure
KR101131631B1 (en) Assembling bridge construction method using Prestressed concrete girder with plural steel wires disposed at shear surface of tension port
CN110700274A (en) Mechanically-connected assembled stand column and stand column pile
US10077539B1 (en) Wall and retaining members and fluidizing installation of retaining members
KR200293048Y1 (en) shoring structure using prestressed retaining wall
CN221276619U (en) Foundation pit supporting structure and building foundation pit
CN208455639U (en) Deep Foundation Pit of Metro Stations combined type supporting construction

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination