CN116641421A - Complicated steel support structure close to existing subway and mounting and dismounting construction method - Google Patents

Complicated steel support structure close to existing subway and mounting and dismounting construction method Download PDF

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Publication number
CN116641421A
CN116641421A CN202310635496.9A CN202310635496A CN116641421A CN 116641421 A CN116641421 A CN 116641421A CN 202310635496 A CN202310635496 A CN 202310635496A CN 116641421 A CN116641421 A CN 116641421A
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CN
China
Prior art keywords
plate
positioning
steel
steel support
rod
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
CN202310635496.9A
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Chinese (zh)
Inventor
魏来
陈汉威
谭冰
岳宝树
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Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
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Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
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Application filed by Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd filed Critical Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority to CN202310635496.9A priority Critical patent/CN116641421A/en
Publication of CN116641421A publication Critical patent/CN116641421A/en
Pending legal-status Critical Current

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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
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sustainable Development (AREA)
  • Hydrology & Water Resources (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The invention relates to the technical field of constructional engineering, in particular to a complex steel support structure close to the existing subway and an installing and dismantling construction method, which comprises the following steps: the side face of the underground diaphragm wall is provided with a positioning steel plate, one end of the positioning steel plate is provided with a bottom plate, the side face of the bottom plate is provided with a through long steel plate, the side face of the through long steel plate is provided with a steel support, the bottom of the steel support is provided with a supporting plate, the side face of the underground diaphragm wall is provided with a bracket and a fixing plate, a positioning ring is sleeved in the fixing plate, and the side face of the positioning ring is provided with a pull rod; the beneficial effects are as follows: when the steel support is detached, the steel support to be detached is supported by the bracket, then the movable end locking device is detached by applying pre-pressure by the jack, the connecting part of the steel support end is cut by gas welding, the steel support is sequentially lifted, and then the positioning steel plate, the bracket and the like are sequentially detached, so that the sudden change of the stress on one side of the subway is prevented.

Description

Complicated steel support structure close to existing subway and mounting and dismounting construction method
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a complex steel support structure close to the existing subway and an installing and dismantling construction method.
Background
As the urban foundation pit has increasingly complex functional requirements and increasingly complex and sensitive environments, challenges are presented to the design and construction technology of the deep foundation pit, and the control problem of the deformation stability of the deep foundation pit and the protection problem of the building (construction) around the foundation pit are increasingly emphasized.
In the prior art, before the foundation pit construction process, the construction of supporting measures is carried out on one side of the existing subway, and along with the earth excavation of the foundation pit, the completed structure and the underground continuous wall are tightly propped up through a steel support so as to prevent the displacement or settlement of the existing subway.
However, the whole traditional supporting structure is fixedly connected, and when the whole traditional supporting structure is detached, the whole traditional supporting structure is directly detached, so that the problem that the existing subway side is suddenly changed due to stress, and the displacement or settlement of the subway is seriously possibly caused can be caused.
Disclosure of Invention
The invention aims to provide a complex steel support structure close to the existing subway and an installing and detaching construction method, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: adjacent existing subway complex steel support structures, the adjacent existing subway complex steel support structures include: the underground diaphragm wall is internally inserted with an expansion bolt, the surface of the expansion bolt is sleeved with a fixed plate, the surface of the fixed plate is provided with a hole, the side surface of the underground diaphragm wall is provided with a placing groove, a positioning steel plate is arranged in the placing groove, the surface of the positioning steel plate is provided with a supporting plate, and one end of the supporting plate is provided with a bottom plate;
the positioning ring is provided with a positioning groove on the end face, a second positioning groove is formed in the other end of the positioning ring, a spring is arranged in the second positioning groove, one end of the spring is provided with a positioning rod, the side face of the positioning ring is provided with a pull rod, and one end of the pull rod is sleeved with a threaded pipe;
the steel support is arranged on the side face of the through long steel plate, the vertical plate is arranged on the surface of the steel support, the through hole is formed in the side face of the through long steel plate, and the fixing rod is inserted into the through hole;
the bracket is provided with the baffle on the bracket surface, and the bracket bottom is provided with the diagonal brace board, and the slide hole has been seted up on the bracket surface, and the bracket surface is provided with the limiting plate, and the limiting plate bottom is provided with the movable plate.
Preferably, the fixing plate is fixed on the side surface of the underground continuous wall by using an expansion bolt, and the positioning ring is sleeved in a hole formed in the surface of the fixing plate.
Preferably, one end of the spring is fixedly connected to the end face of the second positioning groove, the other end of the spring is fixedly connected to the end face of the positioning rod, a second through hole is formed in the side face of the second positioning groove, a sliding block is arranged on the surface of the positioning rod, the sliding block is inserted into the second through hole, and the positioning rod is of an arc rod-shaped structure.
Preferably, the pull rod side has offered the rotary groove, is provided with the bearing in the rotary groove, and screwed pipe inner ring face fixed connection is at the outer anchor ring of bearing, and the screwed pipe internal thread connects with the threaded rod, and threaded rod one end is fixed at the side of another group of holding ring.
Preferably, the positioning steel plate is fixed in the placing groove by using the expansion bolts, the supporting plate is of a square plate-shaped structure, two groups of supporting plates are arranged, the two groups of supporting plates are symmetrically distributed on the center line of the long side of the surface of the positioning steel plate, and one end of each supporting plate is fixedly connected to the surface of the positioning steel plate.
Preferably, the vertical plate is fixedly connected to the surface of the steel support by using a fixing bolt, a second hole is formed in the surface of the vertical plate, the positioning ring is sleeved on the vertical plate, a supporting plate is arranged at the bottom of the steel support, and a limit hole is formed in the side face of the long steel plate.
Preferably, one end of the supporting plate is inserted into the limiting hole, a base is arranged at the bottom of the supporting plate, and the base is fixed on the side face of the through long steel plate by using a fixing rod.
Preferably, the storage groove has been seted up to the dead lever side, is provided with the traction lever in the storage groove, and the traction lever surface cover is equipped with locating piece and lift spring, and dead lever one end is provided with the bearing plate, and the bearing plate surface is provided with the pole setting, and pole setting registration sleeve is equipped with the clamp plate, and the screw thread is seted up to pole setting one end, and the screw thread surface spiro union has the nut, and the locating piece can slide on the traction lever, and lift spring one end fixed connection is in the locating piece bottom, and lift spring other end fixed connection is in storage groove bottom.
Preferably, the movable plate is internally and spirally connected with a second screw rod, one end of the second screw rod is sleeved with a second bearing, the side surface of the second bearing is provided with a fixed base, the side surface of the fixed base is fixedly connected with the inner side surface of the bracket, the bracket is fixed on the side surface of the underground diaphragm wall by using an expansion bolt, and the second screw rod can be rotated to enable the limiting plate to move.
The installing and dismantling construction method comprises the complex steel support structure adjacent to the existing subway.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a complex steel support structure close to the existing subway and an installing and dismantling construction method, wherein the complex steel support structure close to the existing subway and the installing and dismantling construction method are layered from bottom to top when the existing subway is dismantled, a bracket is adopted to support the steel support to be dismantled when the steel support is dismantled, then a jack is used for applying pre-pressure to dismantle a movable end locking device, then the steel support is cut by gas welding at the connecting part of the end of the steel support, then a positioning steel plate, the bracket and the like are dismantled in sequence, so that the stress on one side of the subway is prevented from being suddenly changed, the problem that the stress on one side of the existing subway is not ensured to be suddenly changed and the subway is seriously possibly caused to be displaced or settled is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the tilting structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;
FIG. 4 is a cross-sectional view of a structural underground diaphragm wall of the present invention;
FIG. 5 is a top plan view of the structure of the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 5B;
FIG. 7 is a schematic view of a structural steel support structure of the present invention;
FIG. 8 is an enlarged schematic view of FIG. 7 at C;
FIG. 9 is a schematic view of the structure of the through-length steel plate of the present invention;
fig. 10 is an enlarged schematic view of the structure of fig. 9 at D.
In the figure: 1. underground continuous wall; 2. a tube expansion bolt; 3. a fixing plate; 4. a placement groove; 5. positioning a steel plate; 6. a support plate; 7. a bottom plate; 8. a positioning ring; 9. a positioning groove; 10. a second positioning groove; 11. a spring; 12. a positioning rod; 13. a pull rod; 14. a threaded tube; 15. a long steel plate; 16. a steel support; 17. a vertical plate; 18. a through hole; 19. a fixed rod; 20. a bracket; 21. a baffle; 22. a slide hole; 23. a limiting plate; 24. a moving plate; 25. a second through hole; 26. a slide block; 100. a rotating groove; 101. a bearing; 102. a threaded rod; 27. a supporting plate; 28. a limiting hole; 29. a base; 30. a second screw; 300. a storage tank; 31. a second bearing; 32. a fixed base; 33. a diagonal brace plate; 301. a traction rod; 302. a positioning block; 303. a lifting spring; 304. a bearing plate; 305. a vertical rod; 306. a pressing plate; 307. and (3) a nut.
Detailed Description
In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of 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. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
Example 1
Referring to fig. 1 to 10, the present invention provides a technical solution: adjacent existing subway complex steel support structures, the adjacent existing subway complex steel support structures include: the underground diaphragm wall 1, the expansion bolt 2 is inserted into the underground diaphragm wall 1, the surface of the expansion bolt 2 is sleeved with the fixed plate 3, the surface of the fixed plate 3 is provided with holes, the side surface of the underground diaphragm wall 1 is provided with the placing groove 4, the placing groove 4 is internally provided with the positioning steel plate 5, the surface of the positioning steel plate 5 is provided with the supporting plate 6, and one end of the supporting plate 6 is provided with the bottom plate 7; the positioning device comprises a positioning ring 8, wherein a positioning groove 9 is formed in the end face of the positioning ring 8, a second positioning groove 10 is formed in the other end of the positioning ring 8, a spring 11 is arranged in the second positioning groove 10, a positioning rod 12 is arranged at one end of the spring 11, a pull rod 13 is arranged on the side face of the positioning ring 8, and a threaded pipe 14 is sleeved at one end of the pull rod 13; the steel plate 15 is long, the steel support 16 is arranged on the side surface of the long steel plate 15, the vertical plate 17 is arranged on the surface of the steel support 16, the through hole 18 is formed on the side surface of the long steel plate 15, and the fixing rod 19 is inserted into the through hole 18; the support frame 20, the surface of the support frame 20 has baffle plates 21, the bottom of the support frame 20 has inclined supporting plates 33, the surface of the support frame 20 has slide holes 22, the surface of the support frame 20 has limiting plates 23, the bottom of the limiting plates 23 has movable plates 24, an installing and dismantling construction method, including the complex steel support structure of the existing subway of said approaching;
when the steel support 16 is dismounted, the bracket 20 is adopted to hold the steel support 16 to be dismounted, then the jack is used for applying pre-pressure to dismount the movable end locking device, the gas welding is used for cutting the connecting part of the end head of the steel support 16, the steel support 16 is sequentially hoisted, and then the positioning steel plate 5, the bracket 20 and the like are sequentially dismounted, so that the stress on one side of the subway is prevented from being suddenly changed.
Example two
The first embodiment is characterized in that a fixing plate 3 is arranged on the basis of the first embodiment, the fixing plate 3 is fixed on the side surface of the underground diaphragm wall 1 by using a pipe expansion bolt 2, a positioning ring 8 is sleeved in a hole formed in the surface of the fixing plate 3, one end of a spring 11 is fixedly connected to the end surface of a second positioning groove 10, the other end of the spring 11 is fixedly connected to the end surface of a positioning rod 12, a second through hole 25 is formed in the side surface of the second positioning groove 10, a sliding block 26 is arranged on the surface of the positioning rod 12, the sliding block 26 is inserted into the second through hole 25, the positioning rod 12 is in an arc-shaped rod-shaped structure, a rotating groove 100 is formed in the side surface of a pull rod 13, a bearing 101 is arranged in the rotating groove 100, the inner annular surface of a threaded pipe 14 is fixedly connected to the outer annular surface of the bearing 101, one end of the threaded rod 102 is fixedly connected to the side surface of the other group of the positioning ring 8 in the threaded pipe 14, a vertical plate 17 is fixedly connected to the surface of a steel support 16 by using a fixing bolt, a second hole is formed in the surface of the vertical plate 17, the positioning ring 8 is sleeved on the vertical plate 17, the bottom of the steel support 16 is provided with a limiting hole 27, and a limit hole 28 is formed in the side surface of the steel support 15;
when the steel support 16 is initially fixed in use, the sliding slide block 26 firstly moves the positioning rod 12 in the second positioning groove 10 to compress the spring 11, then the positioning ring 8 is sleeved on the vertical plate 17, the other group of positioning rings 8 are sleeved on the fixed plate 3 in the same way, the positioning rod 12 can be inserted into the positioning groove 9 by the elastic force of the spring 11 to prevent the positioning rings 8 from falling off, the through long steel plate 15 is fixed by the group of positioning rings 8, then the threaded pipe 14 is rotated by the bearing 101, the distance between the pull rod 13 and the threaded rod 102 is reduced, the pull rod 13 is matched with the threaded rod 102 to improve the traction force on the steel support 16 and the through long steel plate 15, and the fixing stability of the steel support 16 is improved.
Example III
The second embodiment is characterized in that a supporting plate 27 is arranged on the basis of the second embodiment, one end of the supporting plate 27 is inserted into a limiting hole 28, the bottom of the supporting plate 27 is provided with a base 29, the base 29 is fixed on the side surface of a through long steel plate 15 by using a fixing rod 19, the side surface of the fixing rod 19 is provided with a storage groove 300, a traction rod 301 is arranged in the storage groove 300, the surface of the traction rod 301 is sleeved with a positioning block 302 and a lifting spring 303, one end of the fixing rod 19 is provided with a bearing plate 304, the surface of the bearing plate 304 is provided with a vertical rod 305, the vertical rod 305 is sleeved with a pressing plate 306, one end of the vertical rod 305 is provided with threads, the threaded surface is in threaded connection with a nut 307, the positioning block 302 can slide on the traction rod 301, one end of the lifting spring 303 is fixedly connected to the bottom of the positioning block 302, the other end of the lifting spring 303 is fixedly connected to the bottom of the storage groove 300, the moving plate 24 is in threaded connection with a second screw 30, one end of the second screw 30 is sleeved with a second bearing 31, the side surface of the second bearing 31 is provided with a fixing base 32, the side surface of the fixing base 32 is fixedly connected to the inner side surface of a bracket 20, the bracket 20 is fixed on the side surface of the underground continuous wall 1 by using an expansion bolt 2, and the second screw 30 is rotatable to move the limiting plate 23;
when the support is used, the bracket is fixed on the side surface of the underground diaphragm wall 1 by utilizing the expansion bolts 2, then the through-length steel plate 15 is placed on the bracket 20, then the support is inserted into the fixing rod 19, the chamfer is formed on the positioning block 302 arranged at one end of the fixing rod 19, the fixing rod 19 can be directly inserted into the through hole 18, the support plate 27 is fixed on the side surface of the through-length steel plate 15 by matching with the positioning block 302, then the second screw 30 is rotated, the second screw 30 is matched with the rotation of the second bearing 31, the moving plate 24 is displaced in the sliding hole 22, the limiting plate 23 is matched with the baffle plate 21 to clamp and fix the bottom of the through-length steel plate 15, the overall fixation stability of the through-length steel plate 15 is improved, the pressing plate 306 can be pressed when the support plate is required to be disassembled, the positioning block 302 can be driven to move downwards along the traction rod 301, then the fixing rod 19 can be directly extracted, the positioning block 303 can be extracted, and the positioning block 303 can not be randomly moved by setting the lifting spring.
During practical use, when dismantling, from bottom to top layering goes on, adopt bracket 20 to hold the steel support 16 that waits to dismantle when dismantling steel support 16, then exert precompression with the jack and unload the loose end locking device, cut steel support 16 end junction part with the gas welding, take down locating ring 8 from fixed plate 3 at pressing locating lever 12, hang steel support 16 in proper order, then dismantle locating steel sheet 5 in proper order, bracket 20 etc. and take place the mutation, traditional bearing structure whole is fixed connection has been avoided like this, then whole direct dismantlement when dismantling, thereby then lead to unable assurance that existing subway one side atress takes place the mutation, serious probably lead to the problem that the subway takes place displacement or subsides.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. Near existing subway complex steel support structure, its characterized in that: the complex steel support structure adjacent to the existing subway comprises the following components: the underground diaphragm wall (1), the expanding bolt (2) is inserted into the underground diaphragm wall (1), the fixed plate (3) is sleeved on the surface of the expanding bolt (2), the hole is formed in the surface of the fixed plate (3), the placing groove (4) is formed in the side face of the underground diaphragm wall (1), the positioning steel plate (5) is arranged in the placing groove (4), the supporting plate (6) is arranged on the surface of the positioning steel plate (5), and the bottom plate (7) is arranged at one end of the supporting plate (6);
the positioning device comprises a positioning ring (8), wherein a positioning groove (9) is formed in the end face of the positioning ring (8), a second positioning groove (10) is formed in the other end of the positioning ring (8), a spring (11) is arranged in the second positioning groove (10), a positioning rod (12) is arranged at one end of the spring (11), a pull rod (13) is arranged on the side face of the positioning ring (8), and a threaded pipe (14) is sleeved at one end of the pull rod (13);
a through long steel plate (15), a steel support (16) is arranged on the side surface of the through long steel plate (15), a vertical plate (17) is arranged on the surface of the steel support (16), a through hole (18) is formed in the side surface of the through long steel plate (15), and a fixing rod (19) is inserted into the through hole (18);
the support device comprises a support (20), wherein a baffle (21) is arranged on the surface of the support (20), an inclined supporting plate (33) is arranged at the bottom of the support (20), a sliding hole (22) is formed in the surface of the support (20), a limiting plate (23) is arranged on the surface of the support (20), and a moving plate (24) is arranged at the bottom of the limiting plate (23).
2. The adjacent existing subway complex steel supporting structure according to claim 1, wherein: the fixing plate (3) is fixed on the side face of the underground diaphragm wall (1) by using the expansion bolts (2), and the positioning ring (8) is sleeved in a hole formed in the surface of the fixing plate (3).
3. The nearby existing subway complex steel support structure of claim 2, wherein: one end of the spring (11) is fixedly connected to the end face of the second positioning groove (10), the other end of the spring (11) is fixedly connected to the end face of the positioning rod (12), the second through hole (25) is formed in the side face of the second positioning groove (10), the sliding block (26) is arranged on the surface of the positioning rod (12), the sliding block (26) is inserted into the second through hole (25), and the positioning rod (12) is of an arc-shaped rod structure.
4. A complex steel support structure adjacent to an existing subway as claimed in claim 3, wherein: the side of the pull rod (13) is provided with a rotating groove (100), a bearing (101) is arranged in the rotating groove (100), the inner annular surface of the threaded pipe (14) is fixedly connected with the outer annular surface of the bearing (101), a threaded rod (102) is screwed in the threaded pipe (14), and one end of the threaded rod (102) is fixed on the side surface of the other group of positioning rings (8).
5. The structure of claim 4, wherein: the positioning steel plate (5) is fixed in the placing groove (4) by utilizing the expansion bolts (2), the supporting plates (6) are of square plate-shaped structures, two groups of supporting plates (6) are arranged, the two groups of supporting plates (6) are symmetrically distributed on the center line of the long side of the surface of the positioning steel plate (5), and one end of each supporting plate (6) is fixedly connected to the surface of the positioning steel plate (5).
6. The complex steel support structure adjacent to the existing subway as claimed in claim 5, wherein: the vertical plate (17) is fixedly connected to the surface of the steel support (16) through a fixing bolt, a second hole is formed in the surface of the vertical plate (17), the locating ring (8) is sleeved on the vertical plate (17), a supporting plate (27) is arranged at the bottom of the steel support (16), and a limit hole (28) is formed in the side face of the through long steel plate (15).
7. The structure of claim 6, wherein the structure comprises: one end of the supporting plate (27) is inserted into the limiting hole (28), a base (29) is arranged at the bottom of the supporting plate (27), and the base (29) is fixed on the side face of the through long steel plate (15) by using the fixing rod (19).
8. The structure of claim 7, wherein the structure comprises: storage groove (300) have been seted up to dead lever (19) side, be provided with traction lever (301) in storage groove (300), traction lever (301) surface cover is equipped with locating piece (302) and lift spring (303), dead lever (19) one end is provided with bearing plate (304), bearing plate (304) surface is provided with pole setting (305), pole setting (305) register cover is equipped with clamp plate (306), screw thread has been seted up to pole setting (305) one end, screw thread surface spiro union has nut (307), locating piece (302) can slide on traction lever (301), lift spring (303) one end fixed connection is in locating piece (302) bottom, lift spring (303) other end fixed connection is in storage groove (300) bottom.
9. The nearby existing subway complex steel support structure of claim 8, wherein: the movable plate (24) is internally connected with a second screw rod (30) in a threaded manner, one end of the second screw rod (30) is sleeved with a second bearing (31), the side face of the second bearing (31) is provided with a fixed base (32), the side face of the fixed base (32) is fixedly connected with the inner side face of the bracket (20), the bracket (20) is fixed on the side face of the underground diaphragm wall (1) through an expansion bolt (2), and the second screw rod (30) can be rotated to enable the limiting plate (23) to move.
10. The installation and disassembly construction method for the complex steel support structure of the existing subway, which is adjacent to the complex steel support structure, according to any one of claims 1 to 9, is characterized in that: the method comprises the following steps:
s1: firstly, determining the distance between steel columns in a supporting structure, reinforcing bars of a concrete structure and the like by using BIM technology, determining the position of a supporting point of a steel support (16), and determining the specification and model of the used materials;
s2: the construction of the underground continuous wall (1) at one side of the existing subway in the construction area is completed, and the construction of the opposite side structure and the supporting structure of the existing subway in the construction area is completed;
s3: carrying out earth excavation in a construction area in a layered manner, carrying out steel support (16) construction in sequence from top to bottom, fixing a fixing plate (3), a bracket (20) and a positioning steel plate (5) on an underground continuous wall (1) by using expansion bolts (2), and then rotating a second screw (30) to enable a limiting plate (23) to be matched with a baffle plate (21) to fix the bottom of a long steel plate (15);
s4: finally, when the whole supporting structure is required to be disassembled, the whole supporting structure is only required to be layered from bottom to top.
CN202310635496.9A 2023-06-01 2023-06-01 Complicated steel support structure close to existing subway and mounting and dismounting construction method Pending CN116641421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310635496.9A CN116641421A (en) 2023-06-01 2023-06-01 Complicated steel support structure close to existing subway and mounting and dismounting construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310635496.9A CN116641421A (en) 2023-06-01 2023-06-01 Complicated steel support structure close to existing subway and mounting and dismounting construction method

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CN116641421A true CN116641421A (en) 2023-08-25

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CN202310635496.9A Pending CN116641421A (en) 2023-06-01 2023-06-01 Complicated steel support structure close to existing subway and mounting and dismounting construction method

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