CN110761327A - Longitudinal segmented open caisson connecting structure of slurry balance open caisson station and mounting method - Google Patents
Longitudinal segmented open caisson connecting structure of slurry balance open caisson station and mounting method Download PDFInfo
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- CN110761327A CN110761327A CN201911021237.7A CN201911021237A CN110761327A CN 110761327 A CN110761327 A CN 110761327A CN 201911021237 A CN201911021237 A CN 201911021237A CN 110761327 A CN110761327 A CN 110761327A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000002002 slurry Substances 0.000 title description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 159
- 239000010959 steel Substances 0.000 claims abstract description 159
- 238000007789 sealing Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims description 24
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 239000011150 reinforced concrete Substances 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 17
- 239000002689 soil Substances 0.000 abstract description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
-
- 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
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
Abstract
The invention belongs to the technical field of municipal foundation pit engineering, and particularly provides a longitudinal segmented open caisson connecting structure and a mounting method for a muddy water balance open caisson station, wherein a first sinking section is sunk to a designated position, and then a connecting plugging steel plate of a subsequent sinking section is sunk to a preset position along an initial plugging steel plate; constructing a waterproof curtain on the outer sides of the side walls of the first sinking section and the subsequent sinking section to form a closed system; cutting off the initial plugging steel plate and connecting the plugging steel plates, and sealing the first sinking section and the subsequent sinking section through a post-cast strip. According to the scheme, each section in the station sinking process constructed by the open caisson method forms an effective closed system, and the safety of each section in the sinking process is ensured. And the problem that after each section sinks, the first sinking section and the second sinking section can form effective connection in the longitudinal direction can be solved. The method has simple structure form and safe and reliable construction, can obviously reduce the construction cost, and can be widely applied to the construction of subway stations in soft soil areas.
Description
Technical Field
The invention belongs to the technical field of municipal foundation pit engineering, and particularly relates to a longitudinal segmented open caisson connecting structure of a slurry balance open caisson station and an installation method.
Background
The open caisson foundation has the advantages of strong integrity, good stability, larger bearing area, capability of bearing larger vertical load and horizontal load, low cost, shock resistance, energy consumption and the like, and has been widely applied in various fields. The existing construction method of the steel bar and concrete open caisson generally adopts manual excavation or large-scale mechanical excavation, and the sinking rate is too high or the phenomenon of sudden sinking occurs. The manual excavation open caisson is adopted for sinking, so that the efficiency is low and the labor intensity is high; and the adoption of mechanical excavation open caisson sinking requires large-scale mechanical equipment, so that the investment and energy consumption are high, the cost is high, and the potential safety hazard of construction exists. When adopting artifical or mechanical excavation sinking open caisson structure in-process, when the open caisson structure appears and is difficult to sink, often adopt near the well outer wall to squeeze into the injection pipe, thereby send high pressure water through the high-pressure pump and destroy the frictional force between the wall of a well and the soil body for the open caisson structure sinks more smoothly.
The underground stations of urban rail transit are usually long and narrow in plane arrangement, and a longitudinal sectional construction method is adopted during construction. The station has large scale, so that the whole station can not sink completely, and the station needs to sink in sections. One or more gaps may be formed between successively constructed segments. Because each section of open caisson section sinks after the ground construction is finished, the gaps need to be sealed in the station after each section of open caisson section sinks, so that the purpose of sealing the station structure is achieved.
Disclosure of Invention
The invention aims to solve the problem that stations constructed by adopting an open caisson method are connected at a longitudinal joint after being sunk in sections.
Therefore, the invention provides a longitudinal segmented open caisson connecting structure of a muddy water balance open caisson station, which comprises a first sinking section and a subsequent sinking section, wherein the connecting side of the first sinking section is provided with an initial plugging steel plate in a sealing manner, the connecting side of the subsequent sinking section is provided with a connecting plugging steel plate in a sealing manner, the initial plugging steel plate is abutted against the connecting plugging steel plate, and the periphery of the abutted part of the initial plugging steel plate and the connecting plugging steel plate is connected in a sealing manner through a post-cast strip.
Preferably, a waterproof curtain is arranged on the outer side of the end side wall at the abutting part of the starting plugging steel plate and the connecting plugging steel plate.
Preferably, the first sinking section comprises a first sinking section bottom plate, a first sinking section middle plate, a first sinking section top plate and a first sinking section side wall, and the first sinking section bottom plate, the first sinking section top plate, the first sinking section side wall and the initial plugging steel plate enclose to form a first closed space;
the subsequent sinking section comprises a subsequent sinking section bottom plate, a subsequent sinking section middle plate, a subsequent sinking section top plate and a subsequent sinking section side wall which are in one-to-one correspondence with the previous sinking section bottom plate, the previous sinking section middle plate, the previous sinking section top plate and the previous sinking section side wall, and the subsequent sinking section bottom plate, the subsequent sinking section top plate, the subsequent sinking section side wall and the connecting and blocking steel plate are enclosed to form a second closed space;
the first closed space and the second closed space are communicated through a post-pouring belt.
Preferably, the base plate of the first sinking section, the middle plate of the first sinking section, the top plate of the first sinking section and the side wall of the first sinking section are welded with the initial plugging steel plate;
the subsequent sinking section bottom plate, the subsequent sinking section middle plate, the subsequent sinking section top plate and the subsequent sinking section side wall are all connected with the connecting and plugging steel plates through horizontal supporting section steel, and the subsequent sinking section side wall is connected with the connecting and plugging steel plates through side wall plugging steel plate sealing.
Preferably, the connecting and blocking steel plate and the horizontal supporting section steel are welded.
Preferably, the connecting and blocking steel plate is in transitional connection with the subsequent sinking section side wall through the side wall blocking steel plate, and a reinforcing steel plate is vertically arranged on the connecting and blocking steel plate and the side wall blocking steel plate.
Preferably, at least one side of the preceding sinking section is provided with an initial plugging steel plate in a sealing manner, and at least one side of the subsequent sinking section is provided with a connecting plugging steel plate in a sealing manner.
Preferably, the bottom end of the connecting side of the preceding sinking section is provided with a preceding sinking section edge foot, the bottom end of the connecting side of the subsequent sinking section is provided with a subsequent sinking section edge foot corresponding to the preceding sinking section edge foot, and the preceding sinking section edge foot is abutted against the subsequent sinking section edge foot.
Preferably, the initial plugging block and the connection plugging block are both of steel plate or reinforced concrete structure.
The invention also provides a method for installing the longitudinal segmented open caisson connecting structure of the muddy water balance open caisson station, which comprises the following steps:
the initial plugging steel plate is arranged on the connecting side of the first sinking section in a sealing manner, and the connecting plugging steel plate is arranged on the connecting side of the subsequent sinking section in a sealing manner;
sinking the first sinking section to a designated position, and then sinking the connecting plugging steel plate of the subsequent sinking section to a preset position along the initial plugging steel plate;
and after the plugging steel plate of the first sinking section and the subsequent sinking section sink to the preset elevation, constructing a waterproof curtain outside the side walls of the initial plugging steel plate and the connecting plugging steel plate to form a closed enclosure system.
And cutting off the initial plugging steel plate and the connecting plugging steel plate, and sealing the first sinking section and the subsequent sinking section through a post-cast strip.
The invention has the beneficial effects that: the invention provides a longitudinal subsection open caisson connecting structure and a mounting method for a muddy water balance open caisson station.A starting plugging steel plate is arranged on the connecting side of a first sinking section in a sealing manner, and a connecting plugging steel plate is arranged on the connecting side of a subsequent sinking section in a sealing manner; sinking the first sinking section to a designated position, and then sinking the connecting plugging steel plate of the subsequent sinking section to a preset position along the initial plugging steel plate; and after the plugging steel plate of the first sinking section and the subsequent sinking section sink to the preset elevation, constructing a waterproof curtain outside the side walls of the initial plugging steel plate and the connecting plugging steel plate to form a closed enclosure system. Cutting off the initial plugging steel plate and connecting the plugging steel plates, and sealing the first sinking section and the subsequent sinking section through a post-cast strip. By the aid of the scheme, each section of the station constructed by the open caisson method can form an effective closed system in the process of sinking, and safety of each section of the station in the process of sinking is guaranteed. And the first-after sinking section and the second-after sinking section can form effective connection in the longitudinal direction after sinking is finished. The method has simple structure form and safe and reliable construction, can obviously reduce the construction cost, and can be widely applied to the construction of subway stations in soft soil areas.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic top view of a longitudinal sectional open caisson connecting structure of a muddy water balance open caisson station of the present invention;
FIG. 2 is a schematic sectional view A-A of a longitudinal segmented open caisson connecting structure of a station of the muddy water balanced open caisson of the invention;
FIG. 3 is a schematic view of the connection between the subsequent sinking sections and the connecting plugging steel plate of the longitudinal segmented open caisson connecting structure of the muddy water balanced open caisson station of the present invention;
fig. 4 is a schematic front view of the longitudinal sectional open caisson connecting structure of the muddy water balance open caisson station after the installation is completed.
Description of reference numerals: the structure comprises a first sinking section 1, a first sinking section bottom plate 101, a first sinking section middle plate 102, a first sinking section top plate 103, a first sinking section edge foot 104, a first sinking section side wall 105, an initial plugging steel plate 2, a subsequent sinking section 3, a subsequent sinking section bottom plate 301, a subsequent sinking section middle plate 302, a subsequent sinking section top plate 303, a subsequent sinking section edge foot 304, a subsequent sinking section side wall 305, a connecting plugging steel plate 4, a side wall plugging steel plate 5, horizontal supporting section steel 6, a reinforcing steel plate 7, a water-stop curtain 8, a post-pouring belt 9, a parallel first sinking section 11 and a parallel subsequent sinking section 33.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 4, an embodiment of the present invention provides a longitudinal segmented caisson connecting structure for a slurry balance caisson station, which includes a first sinking section 1 and a subsequent sinking section 3, wherein a connection side of the first sinking section 1 is provided with an initial plugging steel plate 2 in a sealing manner, a connection side of the subsequent sinking section 3 is provided with a connection plugging steel plate 4 in a sealing manner, the initial plugging steel plate 2 abuts against the connection plugging steel plate 4, and the peripheries of the abutting portions of the initial plugging steel plate 2 and the connection plugging steel plate 4 are connected in a sealing manner by a post-cast strip 9.
Therefore, in the process of building the station, because the occupied area of the station is large, the station is transversely divided into a plurality of sections, namely the first sinking section 1 and the subsequent sinking section 3, and can be further longitudinally subdivided, such as the parallel first sinking section 11 and the parallel subsequent sinking section 33. In the construction process, the sinking is carried out firstly, the sinking section 1 is sunk firstly, then the subsequent sinking section 3 is sunk, and other sections are sunk successively by analogy. The initial plugging steel plate 2 and/or the connection plugging steel plate 4 are/is arranged on the connection side of each sinking section in a sealing mode, the initial plugging steel plate 2 on the connection side of the previous sinking section 1 is abutted against the connection plugging steel plate 4 on the connection side of the subsequent sinking section 3, the periphery of the abutted part is sealed after the sinking is finished, and the gap can be sealed and plugged through the post-pouring belt 9.
According to the preferable scheme, a waterproof curtain 8 is arranged on the outer side of the side wall at the joint of the initial plugging steel plate 2 and the connection plugging steel plate 4. Therefore, as shown in fig. 1 and 4, the waterproof curtain 8 is used for sealing and plugging a gap outside the side wall at the joint of the first sinking section and the second sinking section of the station. The waterproof curtain 8 can be in the form of RJP, MJS, TRD, triaxial mixing pile, triple/double pipe high-pressure jet grouting pile, and the like. Any change in the form of the waterproof curtain 8 does not affect the function of its use. After the construction of the waterproof curtain 8 is finished, the initial plugging steel plate 2 and the connection plugging steel plate 4 can be gradually cut off from bottom to top under the condition that the initial plugging steel plate 2 and the connection plugging steel plate 4 are a closed system on the outer side of the side wall of the station.
In a preferred scheme, the first sinking section 1 comprises a first sinking section bottom plate 101, a first sinking section middle plate 102, a first sinking section top plate 103 and a first sinking section side wall 105, and the first sinking section bottom plate 101, the first sinking section top plate 103, the first sinking section side wall 105 and the initial plugging steel plate 2 enclose to form a first closed space;
the subsequent sinking section 3 comprises a subsequent sinking section bottom plate 301, a subsequent sinking section middle plate 302, a subsequent sinking section top plate 303 and a subsequent sinking section side wall 305 which are in one-to-one correspondence with the previous sinking section bottom plate 101, the previous sinking section middle plate 102, the previous sinking section top plate 103 and the previous sinking section side wall 105, and the subsequent sinking section bottom plate 301, the subsequent sinking section top plate 303, the subsequent sinking section side wall 305 and the connecting and blocking steel plate 4 enclose to form a second closed space;
the first closed space and the second closed space are communicated through a post-pouring belt.
As shown in fig. 1 to 3, the station is divided into two layers, a bottom space is defined by the first sunken section bottom plate 101 and the first sunken section middle plate 102, and a top space is defined by the first sunken section middle plate 102 and the first sunken section top plate 103. Similarly, the subsequent sinking section bottom plate 301 and the subsequent sinking section middle plate 302 enclose to form a bottom space, and the subsequent sinking section middle plate 302 and the subsequent sinking section top plate 303 enclose to form a top space. After sinking the first sinking section 1 and the subsequent sinking section 3 in sequence, cutting off the initial plugging steel plate 2 and the connecting plugging steel plate 4, and opening each space layer to form a passageway. The first sinking section bottom plate 101, the first sinking section middle plate 102, the first sinking section top plate 103 and the first sinking section side wall 105 are all of a reinforced concrete structure, and the subsequent sinking section bottom plate 301, the subsequent sinking section middle plate 302, the subsequent sinking section top plate 303 and the subsequent sinking section side wall 305 are all of a reinforced concrete structure.
In a preferred scheme, the base plate 101 of the first sinking section, the middle plate 102 of the first sinking section, the top plate 103 of the first sinking section and the side wall 105 of the first sinking section are all welded with the initial plugging steel plate 2;
the subsequent sinking section bottom plate 301, the subsequent sinking section middle plate 302, the subsequent sinking section top plate 303 and the subsequent sinking section side wall 305 are all connected with the connecting and blocking steel plates 4 through horizontal supporting section steel, and the subsequent sinking section side wall 305 is connected with the connecting and blocking steel plates 4 through side wall blocking steel plates 5 in a sealing manner.
As shown in fig. 2 and 3, the initial plugging steel plate 2 is securely connected to the first sinker bottom plate 101, the first sinker middle plate 102, and the first sinker top plate 103 at corresponding positions by welding, and the connection plugging steel plate 4 is welded to the horizontal support section steel 6 or connected thereto by providing a steel connecting beam. The cross section of the horizontal supporting section steel 6 is correspondingly adjusted at the subsequent sinking section bottom plate 301, the subsequent sinking section middle plate 302 and the subsequent sinking section top plate 303 according to the structural heights of the two parts. The number of the horizontal supporting section steels 6 can be adjusted according to the actual calculation condition. While guaranteeing the stress strength, reduce the material consumption to the utmost extent, reduce cost.
According to the preferable scheme, the connecting and blocking steel plate 4 is in transitional connection with the subsequent sinking section side wall 305 through a side wall blocking steel plate 5, and the connecting and blocking steel plate 4 and the side wall blocking steel plate 5 are vertically provided with reinforcing ribs 7. As shown in fig. 3, the subsequent sinking section side wall 305 and the connecting and blocking steel plate 4 are transitionally connected by the side wall blocking steel plate 5, and the connecting and blocking steel plate 4 and the side wall blocking steel plate 5 are vertically connected by welding at the corner. Because the side wall plugging steel plate 5 can bear the water and soil pressure from the side wall direction, the reinforcing steel plate 7 is vertically arranged on the connecting plugging steel plate 4 and the side wall plugging steel plate 5. When the length of the side wall plugging steel plate 5 is longer, the reinforcing steel plate 7 can be replaced by the section steel with a small section. The reinforcing steel plate 7 is connected with the connecting and plugging steel plate 4 and the side wall plugging steel plate 5 by welding.
Preferably, at least one side of the preceding sinking section 1 is provided with an initial plugging steel plate 2 in a sealing manner, and at least one side of the subsequent sinking section 3 is provided with a connecting plugging steel plate 4 in a sealing manner. The station space is big, can all sink the connection by segmentation as required from top to bottom, all around, divide the region, prefabricated the section that sinks of predetermineeing the size, then from the bottom up to the section between each region with each layer be connected can.
Preferably, a first sinking section edge foot 104 is arranged at the bottom end of the connecting side of the first sinking section 1, a subsequent sinking section edge foot 304 corresponding to the first sinking section edge foot 104 is arranged at the bottom end of the connecting side of the subsequent sinking section 3, and the first sinking section edge foot 104 abuts against the subsequent sinking section edge foot 304. As shown in fig. 2, the main function of the subsequent sinking section blade foot 304 is to prevent water and soil below the bottom plate from flowing around to the inside of the station through the bottom plate during the sinking process of the subsequent sinking section 3.
In a preferred scheme, the initial plugging block and the connection plugging block are both of steel plate or reinforced concrete structures.
The embodiment of the invention also provides a method for installing the longitudinal subsection open caisson connecting structure of the muddy water balance open caisson station, which comprises the following steps:
the connection side of the previous sinking section 1 is provided with an initial plugging steel plate 2 in a sealing way, and the connection side of the subsequent sinking section 3 is provided with a connection plugging steel plate 4 in a sealing way;
sinking the first sinking section 1 to a designated position, and then sinking the connecting plugging steel plate 4 of the subsequent sinking section 3 to a preset position along the initial plugging steel plate 2;
and cutting off the initial plugging steel plate 2 and the connecting plugging steel plate 4, and sealing the space between the advanced sinking section 1 and the subsequent sinking section 3 through a post-pouring belt 9.
The method specifically comprises the following steps:
1) an initial plugging steel plate 2 is buried at the side end of the first sinking section 1, a connection plugging steel plate 4 is buried at the side end of the subsequent sinking section 3, and a side wall plugging steel plate 5 is buried at the side wall 305 of the subsequent sinking section. And a reinforcing steel plate 7 is arranged between the connecting plugging steel plate 4 and the side wall plugging steel plate 5. And horizontal support section steel 6 is arranged at each layer plate between the connection plugging steel plate 4 and the subsequent sinking section 3. 2) And after the subsequent sinking section 3 sinks to the same control elevation as the previous sinking section 1, constructing a waterproof curtain 8. 3) And (3) gradually cutting off the initial plugging steel plate 2 and the connecting plugging steel plate 4 from bottom to top in the station, namely the first sinking section 1 and the subsequent sinking section 3, and pouring a top plate, a middle plate, a bottom plate and a side wall at the joint of the station to complete the construction of the post-cast strip 9.
The invention has the beneficial effects that: the invention provides a longitudinal subsection open caisson connecting structure and a mounting method for a muddy water balance open caisson station.A starting plugging steel plate is arranged on the connecting side of a first sinking section in a sealing manner, and a connecting plugging steel plate is arranged on the connecting side of a subsequent sinking section in a sealing manner; sinking the first sinking section to a designated position, and then sinking the connecting plugging steel plate of the subsequent sinking section to a preset position along the initial plugging steel plate; and after the plugging steel plate of the first sinking section and the subsequent sinking section sink to the preset elevation, constructing a waterproof curtain outside the side walls of the initial plugging steel plate and the connecting plugging steel plate to form a closed enclosure system. Cutting off the initial plugging steel plate and connecting the plugging steel plates, and sealing the first sinking section and the subsequent sinking section through a post-cast strip. The scheme can solve the problem that each section forms an effective closed system in the station sinking process constructed by the open caisson method, and the safety of each section in the sinking process is ensured. And the problem that after each section sinks, the first sinking section and the second sinking section can form effective connection in the longitudinal direction can be solved. The method has simple structure form and safe and reliable construction, can obviously reduce the construction cost, and can be widely applied to the construction of subway stations in soft soil areas.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (10)
1. The utility model provides a vertical segmentation open caisson connection structure of muddy water balance open caisson station which characterized in that: the steel plate type water-cooled water heater comprises a first sinking section and a subsequent sinking section, wherein the connecting side of the first sinking section is provided with an initial plugging steel plate in a sealing manner, the connecting side of the subsequent sinking section is provided with a connecting plugging steel plate in a sealing manner, the initial plugging steel plate is abutted against the connecting plugging steel plate, and the periphery of the abutting part of the initial plugging steel plate and the connecting plugging steel plate is connected in a sealing manner through a post-pouring belt.
2. The longitudinal segmented open caisson connecting structure of a muddy water balanced open caisson station as claimed in claim 1, wherein: and a waterproof curtain is arranged on the outer side of the side wall at the joint of the initial plugging steel plate and the connection plugging steel plate.
3. The longitudinal segmented open caisson connecting structure of a muddy water balanced open caisson station as claimed in claim 1, wherein: the advanced sinking section comprises an advanced sinking section bottom plate, an advanced sinking section middle plate, an advanced sinking section top plate and an advanced sinking section side wall, and the advanced sinking section bottom plate, the advanced sinking section top plate, the advanced sinking section side wall and the initial plugging steel plate are enclosed to form a first closed space;
the subsequent sinking section comprises a subsequent sinking section bottom plate, a subsequent sinking section middle plate, a subsequent sinking section top plate and a subsequent sinking section side wall which are in one-to-one correspondence with the previous sinking section bottom plate, the previous sinking section middle plate, the previous sinking section top plate and the previous sinking section side wall, and the subsequent sinking section bottom plate, the subsequent sinking section top plate, the subsequent sinking section side wall and the connecting and blocking steel plate are enclosed to form a second closed space;
the first closed space and the second closed space are communicated through a post-pouring belt.
4. The longitudinal segmented open caisson connecting structure of a muddy water balanced open caisson station as claimed in claim 3, wherein: the base plate of the advanced sinking section, the middle plate of the advanced sinking section, the top plate of the advanced sinking section and the side wall of the advanced sinking section are all welded with the initial plugging steel plate;
the subsequent sinking section bottom plate, the subsequent sinking section middle plate, the subsequent sinking section top plate and the subsequent sinking section side wall are all connected with the connecting and plugging steel plates through horizontal supporting section steel, and the subsequent sinking section side wall is connected with the connecting and plugging steel plates through side wall plugging steel plate sealing.
5. The longitudinal segmented open caisson connecting structure of a muddy water balanced open caisson station as claimed in claim 4, wherein: and the connecting and blocking steel plate is welded with the horizontal support section steel.
6. The longitudinal segmented open caisson connecting structure of a muddy water balanced open caisson station as claimed in claim 4, wherein: the connecting and blocking steel plate is in transitional connection with the subsequent sinking section side wall through the side wall blocking steel plate, and a reinforcing steel plate is vertically arranged on the connecting and blocking steel plate and the side wall blocking steel plate.
7. The longitudinal segmented open caisson connecting structure of a muddy water balanced open caisson station as claimed in claim 1, wherein: at least one side of the preceding sinking section is provided with an initial plugging steel plate in a sealing way, and at least one side of the subsequent sinking section is provided with a connecting plugging steel plate in a sealing way.
8. The longitudinal segmented open caisson connecting structure of a muddy water balanced open caisson station as claimed in claim 1, wherein: the bottom end of the connecting side of the advanced sinking section is provided with an advanced sinking section edge foot, the bottom end of the connecting side of the subsequent sinking section is provided with a subsequent sinking section edge foot corresponding to the advanced sinking section edge foot, and the advanced sinking section edge foot is abutted against the subsequent sinking section edge foot.
9. The longitudinal segmented open caisson connecting structure of a muddy water balanced open caisson station as claimed in claim 1, wherein: the initial plugging block and the connecting plugging block are both of steel plates or reinforced concrete structures.
10. The utility model provides a longitudinal segmentation open caisson connection structure mounting method of muddy water balance open caisson station, which is characterized in that includes:
the initial plugging steel plate is arranged on the connecting side of the first sinking section in a sealing manner, and the connecting plugging steel plate is arranged on the connecting side of the subsequent sinking section in a sealing manner;
sinking the first sinking section to a designated position, and then sinking the connecting plugging steel plate of the subsequent sinking section to a preset position along the initial plugging steel plate;
after the plugging steel plate of the first sinking section and the subsequent sinking section sink to a preset elevation, constructing a waterproof curtain outside the side walls of the initial plugging steel plate and the connecting plugging steel plate to form a closed enclosure system;
and cutting off the initial plugging steel plate and the connecting plugging steel plate, and sealing the first sinking section and the subsequent sinking section through a post-cast strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911021237.7A CN110761327A (en) | 2019-10-25 | 2019-10-25 | Longitudinal segmented open caisson connecting structure of slurry balance open caisson station and mounting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911021237.7A CN110761327A (en) | 2019-10-25 | 2019-10-25 | Longitudinal segmented open caisson connecting structure of slurry balance open caisson station and mounting method |
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