CN110761327B - Longitudinal sectional open caisson connecting structure of muddy water balance open caisson station and mounting method - Google Patents
Longitudinal sectional open caisson connecting structure of muddy water balance open caisson station and mounting method Download PDFInfo
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- CN110761327B CN110761327B CN201911021237.7A CN201911021237A CN110761327B CN 110761327 B CN110761327 B CN 110761327B CN 201911021237 A CN201911021237 A CN 201911021237A CN 110761327 B CN110761327 B CN 110761327B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 160
- 239000010959 steel Substances 0.000 claims abstract description 160
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 8
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 15
- 239000002689 soil Substances 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 210000001503 joint Anatomy 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010586 diagram Methods 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
- 238000003756 stirring Methods 0.000 description 1
Classifications
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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
- E02D29/04—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
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention belongs to the technical field of municipal foundation pit engineering, and particularly provides a longitudinal sectional open caisson connecting structure of a muddy water balance open caisson station and an installation method, wherein a preceding 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 waterproof curtains on the outer sides of the side walls of the first sinking section and the subsequent sinking section to form a closed system; and cutting off the initial plugging steel plate and connecting the plugging steel plate, and sealing the space between the previous sinking section and the subsequent sinking section through the post-pouring belt. According to the scheme, each section of the station sinking process constructed by adopting the open caisson method forms an effective closed system, so that the safety of each section of the station sinking process is ensured. And can solve the problem that after each section is sunk, the sunk section and the later sunk section can form effective connection in the longitudinal direction. The method has the advantages of simple structural form, 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 sectional open caisson connecting structure of a muddy water 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, earthquake resistance, energy consumption and the like, and has been widely applied in various fields. The existing construction method of the reinforced concrete open caisson generally adopts manual excavation or large-scale mechanical excavation, and the sinking rate is too high or the sinking phenomenon appears. The artificial earth-digging sinking well is adopted for sinking, so that the efficiency is low and the labor intensity is high; and the sinking of the mechanical earth-excavating sinking well requires large-scale mechanical equipment, so that the investment energy consumption is high, the cost is high, and the construction potential safety hazard exists. When the open caisson structure is difficult to sink in the process of manual or mechanical excavation sinking, a water injection pipe is often adopted to be driven into the vicinity of the outer wall of the well, and high-pressure water is conveyed by a high-pressure pump to destroy soil so as to reduce friction between a well wall and the soil, so that the open caisson structure sinks more smoothly.
Urban rail transit underground stations are generally long and narrow in plane arrangement, and are constructed by adopting a method of longitudinally sectioning. Because the station scale is bigger, the whole sinking can not be adopted, and the sinking needs to be carried out in a segmented way. One or more gaps may be formed between the successively constructed segments. Because each section of open caisson section sinks after the construction of the ground is finished, after each section of open caisson section sinks, the gaps are required to be sealed in the station so as to achieve the aim of sealing the station structure.
Disclosure of Invention
The invention aims to solve the problem that stations constructed by adopting a sunk well method are connected at longitudinal joints after sinking in sections.
The invention provides a longitudinal sectional open caisson connecting structure of a muddy water balance open caisson station, which comprises a preceding sinking section and a subsequent sinking section, wherein an initial plugging steel plate is arranged on the connecting side of the preceding sinking section in a sealing manner, a connecting plugging steel plate is arranged on the connecting side of the subsequent sinking section in a sealing manner, the initial plugging steel plate is in butt joint with the connecting plugging steel plate, and the periphery of the butt joint part of the initial plugging steel plate and the connecting plugging steel plate is in sealing connection through a post-pouring belt.
Preferably, a waterproof curtain is arranged on the outer side of the end side wall of the joint of the initial plugging steel plate and the connecting plugging steel plate.
Preferably, the preceding sinking section comprises a preceding sinking section bottom plate, a preceding sinking section middle plate, a preceding sinking section top plate and a preceding sinking section side wall, and the preceding sinking section bottom plate, the preceding sinking section top plate, the preceding 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 preceding sinking section middle plate, a preceding sinking section top plate and a preceding sinking section side wall which are in one-to-one correspondence, and a second closed space is formed by enclosing the subsequent sinking section bottom plate, the subsequent sinking section top plate, the subsequent sinking section side wall and the connecting and plugging steel plate;
The first airtight space is communicated with the second airtight space through a post-pouring belt.
Preferably, the preceding sinking section bottom plate, the preceding sinking section middle plate, the preceding sinking section top plate and the preceding sinking section side wall are welded with the initial plugging steel plate;
the bottom plate of the subsequent sinking section, the middle plate of the subsequent sinking section, the top plate of the subsequent sinking section and the side walls of the subsequent sinking section are all connected with the connecting and plugging steel plates through horizontal support section steel, and the side walls of the subsequent sinking section are in sealing connection with the connecting and plugging steel plates through side wall plugging steel plates.
Preferably, the connecting and plugging steel plate and the horizontal support section steel are welded.
Preferably, the connecting and plugging steel plates are in transitional connection with the side walls of the subsequent sinking section through side wall plugging steel plates, and reinforcing steel plates are vertically arranged on the connecting and plugging steel plates and the side wall plugging steel plates.
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 following 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 cutting edge, the bottom end of the connecting side of the subsequent sinking section is provided with a subsequent sinking section cutting edge corresponding to the preceding sinking section cutting edge, and the preceding sinking section cutting edge is abutted against the subsequent sinking section cutting edge.
Preferably, the initial plugging block and the connecting plugging block are all steel plates or reinforced concrete structures.
The invention also provides a method for installing the longitudinal sectional open caisson connecting structure of the muddy water balance open caisson station, which comprises the following steps:
An initial plugging steel plate is arranged on the connecting side of the previous sinking section in a sealing way, and a connecting plugging steel plate is arranged on the connecting side of the subsequent sinking section in a sealing way;
Sinking the preceding 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 preceding sinking section and the subsequent sinking section are both sunk to a preset elevation, a waterproof curtain is constructed on the outer sides of the side walls of the initial plugging steel plate and the connecting plugging steel plate so as to form a closed surrounding system.
And cutting off the initial plugging steel plate and the connecting plugging steel plate, and sealing the preceding sinking section and the subsequent sinking section through a post-pouring belt.
The invention has the beneficial effects that: according to the longitudinal sectional open caisson connecting structure and the installation method of the muddy water balanced open caisson station, the initial plugging steel plate is arranged on the connecting side of the previous sinking section in a sealing manner, and the connecting side of the subsequent sinking section is provided with the connecting plugging steel plate in a sealing manner; sinking the preceding 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 preceding sinking section and the subsequent sinking section are both sunk to a preset elevation, a waterproof curtain is constructed on the outer sides of the side walls of the initial plugging steel plate and the connecting plugging steel plate so as to form a closed surrounding system. And cutting off the initial plugging steel plate and connecting the plugging steel plate, and sealing the space between the previous sinking section and the subsequent sinking section through the post-pouring belt. According to the scheme, each section of the station sinking process constructed by adopting the open caisson method can form an effective closed system, and the safety of each section of the station sinking process is ensured. And the first sinking section and the second sinking section can form effective connection in the longitudinal direction after sinking is finished. The method has the advantages of simple structural form, 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 with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic top view of a longitudinally segmented open caisson connection structure of a muddy water balanced open caisson station of the present invention;
FIG. 2 is a schematic sectional view of a longitudinal section open caisson connecting structure A-A of a muddy water balance open caisson station according to the invention;
FIG. 3 is a schematic diagram of the connection of a subsequent sinking section of the longitudinal section open caisson connection structure of the muddy water balance open caisson station with a connection plugging steel plate;
fig. 4 is a schematic front view of the muddy water balance open caisson station according to the present invention after the installation of the longitudinal section open caisson connection structure is completed.
Reference numerals illustrate: leading sinking section 1, leading sinking section bottom plate 101, leading sinking section middle plate 102, leading sinking section top plate 103, leading sinking section cutting edge 104, leading sinking section side wall 105, starting to block steel plate 2, following sinking section 3, following sinking section bottom plate 301, following sinking section middle plate 302, following sinking section top plate 303, following sinking section cutting edge 304, following sinking section side wall 305, connecting block steel plate 4, side wall block steel plate 5, horizontal support steel plate 6, reinforcing steel plate 7, waterproof curtain 8, post-cast strip 9, parallel leading sinking section 11 and parallel following sinking section 33.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should 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 the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like, 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 defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1 to 4, the embodiment of the invention provides a longitudinal sectional open caisson connection structure of a muddy water balance open caisson station, which comprises a preceding open caisson section 1 and a subsequent open caisson section 3, wherein an initial plugging steel plate 2 is arranged on the connection side of the preceding open caisson section 1 in a sealing manner, a connection plugging steel plate 4 is arranged on the connection side of the subsequent open caisson section 3 in a sealing manner, the initial plugging steel plate 2 is abutted with the connection plugging steel plate 4, and the periphery of the abutted part of the initial plugging steel plate 2 and the connection plugging steel plate 4 is connected in a sealing manner through a post-pouring belt 9.
In this way, during the station construction process, the station is divided into a plurality of sections laterally due to the large occupied area of the station, i.e. the station includes the preceding sinking section 1 and the following sinking section 3, and may be further subdivided longitudinally, such as the preceding sinking section 11 and the following sinking section 33. In the construction process, the sinking section 1 is firstly sunk, then the sinking section 3 is sunk, and the other sections are sequentially sunk by analogy. The connection side of each sinking section is provided with an initial plugging steel plate 2 and/or a connection plugging steel plate 4 in a sealing manner, the initial plugging steel plate 2 at the connection side of the preceding sinking section 1 is in butt joint with the connection plugging steel plate 4 at the connection side of the following sinking section 3, the periphery of the butt joint is sealed after sinking is finished, and the sealing of the gap can be performed through a post-pouring belt 9.
In a preferred 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 connecting plugging steel plate 4. From this, as shown in fig. 1 and 4, the waterproof curtain 8 is used to seal and seal the gap at the outer side of the side wall at the junction between 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, a triaxial stirring pile, a 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 waterproof curtain 8 is constructed, under the condition that the initial plugging steel plate 2 and the connecting plugging steel plate 4 are in a closed system outside the side wall of the station, the initial plugging steel plate 2 and the connecting plugging steel plate 4 can be gradually cut off from bottom to top.
In a preferred embodiment, the preceding sinking section 1 includes a preceding sinking section bottom plate 101, a preceding sinking section middle plate 102, a preceding sinking section top plate 103, and a preceding sinking section side wall 105, where the preceding sinking section bottom plate 101, the preceding sinking section top plate 103, the preceding sinking section side wall 105, and the starting plugging steel plate 2 enclose to form a first enclosed space;
The subsequent sinking section 3 includes 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 preceding sinking section bottom plate 101, the preceding sinking section middle plate 102, the preceding sinking section top plate 103 and the preceding 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 plugging steel plate 4 enclose to form a second closed space;
The first airtight space is communicated with the second airtight space through a post-pouring belt.
As shown in fig. 1 to 3, the station is divided into two layers, and the preceding sinking section bottom plate 101 and the preceding sinking section middle plate 102 form a bottom space, and the preceding sinking section middle plate 102 and the preceding sinking section top plate 103 form a top space. Similarly, the bottom plate 301 of the subsequent sinking section and the middle plate 302 of the subsequent sinking section enclose to form a bottom space, and the middle plate 302 of the subsequent sinking section and the top plate 303 of the subsequent sinking section enclose to form a top space. After the sinking section 1 and the subsequent sinking section 3 are sequentially sunk, the initial plugging steel plate 2 and the connecting plugging steel plate 4 are cut off, and all the space layers are opened to form a passageway. Wherein, the preceding sinking section bottom plate 101, the preceding sinking section middle plate 102, the preceding sinking section top plate 103 and the preceding sinking section side wall 105 are all reinforced concrete structures, and the following sinking section bottom plate 301, the following sinking section middle plate 302, the following sinking section top plate 303 and the following sinking section side wall 305 are all reinforced concrete structures.
In a preferred embodiment, the preceding sinking section bottom plate 101, the preceding sinking section middle plate 102, the preceding sinking section top plate 103, and the preceding sinking section side wall 105 are all welded with the initial plugging steel plate 2;
The bottom plate 301 of the subsequent sinking section, the middle plate 302 of the subsequent sinking section, the top plate 303 of the subsequent sinking section and the side wall 305 of the subsequent sinking section are all connected with the connecting and plugging steel plate 4 through horizontal support section steel, and the side wall 305 of the subsequent sinking section is in sealing connection with the connecting and plugging steel plate 4 through the side wall plugging steel plate 5.
As shown in fig. 2 and 3, the initial plugging steel plate 2, the preceding sinking section bottom plate 101, the preceding sinking section middle plate 102, and the preceding sinking section top plate 103 are all reliably connected by welding at the corresponding positions, and the connecting plugging steel plate 4 is welded to the horizontal support section steel 6 or connected by providing a steel connecting beam. The cross section of the horizontal support section steel 6 is correspondingly adjusted at the position of the bottom plate 301 of the subsequent sinking section, the middle plate 302 of the subsequent sinking section and the top plate 303 of the subsequent sinking section according to the structural heights of the bottom plate 301 of the subsequent sinking section and the middle plate 302 of the subsequent sinking section. The number of the horizontal support section steel 6 can be adjusted according to actual calculation conditions. The material consumption is reduced to the greatest extent and the cost is reduced while the stress intensity is ensured.
In the preferred scheme, the connecting and plugging steel plate 4 is in transitional connection with the side wall 305 of the subsequent sinking section through the side wall plugging steel plate 5, and the connecting and plugging steel plate 4 and the side wall plugging steel plate 5 are vertically provided with a reinforcing steel plate 7. As shown in fig. 3, the subsequent sinking section side wall 305 is in transitional connection with the connecting and plugging steel plate 4 through the side wall plugging steel plate 5, and the connecting and plugging steel plate 4 and the side wall plugging steel plate 5 are vertically connected at the corner by adopting welding. Because the side wall plugging steel plate 5 bears water and soil pressure from the side wall direction, the reinforcing steel plate 7 is arranged on the vertical direction of 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 small-section steel. The reinforcing steel plate 7 is connected with the connecting plugging steel plate 4 and the side wall plugging steel plate 5 by welding.
In a preferred scheme, 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 following sinking section 3 is provided with a connecting plugging steel plate 4 in a sealing manner. The station space is large, the sections can be connected in a sectional sinking mode as required, the areas are divided, the sinking sections with the preset size are prefabricated, and then the sections among the areas of each layer are connected from bottom to top.
In a preferred embodiment, the bottom end of the connection side of the preceding sinking section 1 is provided with a preceding sinking section blade foot 104, the bottom end of the connection side of the subsequent sinking section 3 is provided with a subsequent sinking section blade foot 304 corresponding to the preceding sinking section blade foot 104, and the preceding sinking section blade foot 104 abuts against the subsequent sinking section blade foot 304. As shown in fig. 2, the main function of the edge 304 of the subsequent sinking section 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 connecting plugging block are both steel plates or reinforced concrete structures.
The embodiment of the invention also provides a method for installing the longitudinal sectional open caisson connecting structure of the muddy water balance open caisson station, which comprises the following steps:
An initial plugging steel plate 2 is arranged on the connecting side of the previous sinking section 1 in a sealing way, and a connecting plugging steel plate 4 is arranged on the connecting side of the subsequent sinking section 3 in a sealing way;
sinking the preceding 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 preceding sinking section 1 and the subsequent sinking section 3 through a post-pouring belt 9.
Specifically comprising:
1) An initial plugging steel plate 2 is embedded in the side end of the preceding sinking section 1, a connecting plugging steel plate 4 is embedded in the side end of the following sinking section 3, and a side wall plugging steel plate 5 is embedded in the side wall 305 of the following sinking section. A reinforcing steel plate 7 is arranged between the connecting plugging steel plate 4 and the side wall plugging steel plate 5. The connecting and plugging steel plates 4 are provided with horizontal support section steel 6 at each layer plate between the connecting and plugging steel plates and the subsequent sinking section 3. 2) And after the subsequent sinking section 3 is sunk to the same control elevation as the preceding sinking section 1, constructing a waterproof curtain 8. 3) And (3) in the station, namely the initial plugging steel plate 2 and the connecting plugging steel plate 4 are gradually cut off from bottom to top in the preceding sinking section 1 and the subsequent sinking section 3, and a top plate, a middle plate, a bottom plate and a side wall at the joint of the station are poured, so that the construction of the post-pouring belt 9 is completed.
The invention has the beneficial effects that: according to the longitudinal sectional open caisson connecting structure and the installation method of the muddy water balanced open caisson station, the initial plugging steel plate is arranged on the connecting side of the previous sinking section in a sealing manner, and the connecting side of the subsequent sinking section is provided with the connecting plugging steel plate in a sealing manner; sinking the preceding 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 preceding sinking section and the subsequent sinking section are both sunk to a preset elevation, a waterproof curtain is constructed on the outer sides of the side walls of the initial plugging steel plate and the connecting plugging steel plate so as to form a closed surrounding system. And cutting off the initial plugging steel plate and connecting the plugging steel plate, and sealing the space between the previous sinking section and the subsequent sinking section through the post-pouring belt. The scheme can solve the problem that each section forms an effective closed system in the sinking process of the station constructed by adopting the open caisson method, and ensures the safety of each section in the sinking process. And can solve the problem that after each section is sunk, the sunk section and the later sunk section can form effective connection in the longitudinal direction. The method has the advantages of simple structural form, 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 foregoing examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention, and all designs that are the same or similar to the present invention are within the scope of the present invention.
Claims (7)
1. A muddy water balance open caisson station longitudinal section open caisson connection structure which characterized in that: the connecting side of the preceding sinking section is provided with a connecting plugging steel plate in a sealing manner, the connecting side of the following sinking section is provided with a connecting plugging steel plate in a sealing manner, the connecting plugging steel plate is abutted with the connecting plugging steel plate, and the periphery of the abutting part of the connecting plugging steel plate and the connecting plugging steel plate is connected in a sealing manner through a post-pouring belt;
A waterproof curtain is arranged on the outer side of the side wall at the joint of the initial plugging steel plate and the connecting plugging steel plate;
The preceding sinking section comprises a preceding sinking section bottom plate, a preceding sinking section middle plate, a preceding sinking section top plate and a preceding sinking section side wall, and the preceding sinking section bottom plate, the preceding sinking section top plate, the preceding 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 preceding sinking section middle plate, a preceding sinking section top plate and a preceding sinking section side wall which are in one-to-one correspondence, and a second closed space is formed by enclosing the subsequent sinking section bottom plate, the subsequent sinking section top plate, the subsequent sinking section side wall and the connecting and plugging steel plate;
The first closed space is communicated with the second closed space through a post-pouring belt;
The preceding sinking section bottom plate, the preceding sinking section middle plate, the preceding sinking section top plate and the preceding sinking section side wall are welded with the initial plugging steel plate; the bottom plate of the subsequent sinking section, the middle plate of the subsequent sinking section, the top plate of the subsequent sinking section and the side walls of the subsequent sinking section are all connected with the connecting and plugging steel plates through horizontal support section steel, and the side walls of the subsequent sinking section are in sealing connection with the connecting and plugging steel plates through side wall plugging steel plates.
2. The muddy water balance open caisson station longitudinal section open caisson connection structure according to claim 1, wherein: and the connecting and plugging steel plate is welded with the horizontal support section steel.
3. The muddy water balance open caisson station longitudinal section open caisson connection structure according to claim 1, wherein: the connecting and plugging steel plates are in transitional connection with the side walls of the subsequent sinking section through side wall plugging steel plates, and reinforcing steel plates are vertically arranged on the connecting and plugging steel plates and the side wall plugging steel plates.
4. The muddy water balance open caisson station longitudinal section open caisson connection structure according to 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 following sinking section is provided with a connecting plugging steel plate in a sealing way.
5. The muddy water balance open caisson station longitudinal section open caisson connection structure according to claim 1, wherein: the bottom of the connecting side of the preceding sinking section is provided with a preceding sinking section cutting edge, the bottom of the connecting side of the following sinking section is provided with a following sinking section cutting edge corresponding to the preceding sinking section cutting edge, and the preceding sinking section cutting edge is abutted against the following sinking section cutting edge.
6. The muddy water balance open caisson station longitudinal section open caisson connection structure according to claim 1, wherein: the initial plugging steel plates and the connecting plugging steel plates are steel plates or reinforced concrete structures.
7. A method for installing a longitudinally segmented open caisson connection Structure of a muddy water balanced open caisson station according to claim 1, comprising:
An initial plugging steel plate is arranged on the connecting side of the previous sinking section in a sealing way, and a connecting plugging steel plate is arranged on the connecting side of the subsequent sinking section in a sealing way;
Sinking the preceding 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 previous sinking section and the subsequent sinking section are both sunk to a preset elevation, constructing a waterproof curtain on the outer sides of the side walls of the initial plugging steel plate and the connecting plugging steel plate to form a closed surrounding system;
and cutting off the initial plugging steel plate and the connecting plugging steel plate, and sealing the preceding sinking section and the subsequent sinking section through a post-pouring belt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911021237.7A CN110761327B (en) | 2019-10-25 | 2019-10-25 | Longitudinal sectional open caisson connecting structure of muddy water balance open caisson station and mounting method |
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| CN201911021237.7A CN110761327B (en) | 2019-10-25 | 2019-10-25 | Longitudinal sectional open caisson connecting structure of muddy water balance open caisson station and mounting method |
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| CN110761327B true CN110761327B (en) | 2024-05-28 |
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| CN110761327A (en) | 2020-02-07 |
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