CN212248263U - Subway station foundation pit excavation supporting construction - Google Patents

Subway station foundation pit excavation supporting construction Download PDF

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Publication number
CN212248263U
CN212248263U CN202020262988.XU CN202020262988U CN212248263U CN 212248263 U CN212248263 U CN 212248263U CN 202020262988 U CN202020262988 U CN 202020262988U CN 212248263 U CN212248263 U CN 212248263U
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China
Prior art keywords
bolt
subway station
foundation pit
underground continuous
steel
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Active
Application number
CN202020262988.XU
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Chinese (zh)
Inventor
王雷
温淑荔
周登荣
付登锋
闫澍旺
刘畅
祁小龙
朱男
陈权
李永强
郝俊跃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin University
China Railway 18th Bureau Group Co Ltd
Fourth Engineering Co Ltd of China Railway 18th Bureau Group Co Ltd
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Tianjin University
China Railway 18th Bureau Group Co Ltd
Fourth Engineering Co Ltd of China Railway 18th Bureau Group Co Ltd
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Priority to CN202020262988.XU priority Critical patent/CN212248263U/en
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Abstract

The utility model relates to the technical field of urban rail transit construction, and discloses a subway station foundation pit excavation supporting structure, which comprises a cross beam, a reinforced concrete crown beam and an underground continuous wall, wherein the top of the underground continuous wall is fixedly connected with the reinforced concrete crown beam, the inner wall of the reinforced concrete crown beam is fixedly connected with the cross beam, and a steel pipe supporting column is arranged between the underground continuous walls, after the underground continuous wall of the subway station foundation pit is excavated, the underground continuous wall is uniformly stressed and has strong supporting stability by arranging the steel pipe supporting column and a twisted steel bolt, so that the subway station foundation pit can be stably supported uniformly, the stability in the excavation process of the foundation pit and after the excavation of the foundation pit is finished can be ensured, the safety and the reliability of the construction process can be ensured, the structure between the steel pipe supporting column and the underground continuous wall is simple, and the construction operation is convenient and efficient, the construction amount is small, and the construction is simple, convenient and quick.

Description

Subway station foundation pit excavation supporting construction
Technical Field
The utility model relates to an urban rail transit construction technical field especially relates to a subway station excavation supporting construction.
Background
The subway station is an important building in an urban rail transit network and is a place for passengers to take on and off, transfer and wait. The cover-excavation method is a novel engineering construction method which is adopted when underground engineering is carried out in the field and needs to pass through obstacles such as highways, buildings and the like, and particularly comprises the steps of excavating downwards from the ground to a certain depth, sealing the top, and constructing the rest of lower engineering under a sealed top cover. The main structure can be made in the same direction or in the opposite direction.
The existing reinforced concrete support needs integral construction layer by layer, and needs to be as strong as the designed strength after completion, the construction period is long, the potential safety hazard is large, and the construction period is long; and traditional reinforced concrete bearing structure intensity is general, and stability is relatively poor, and the construction is difficult, for this reason, we have provided a subway station foundation ditch excavation supporting construction.
SUMMERY OF THE UTILITY MODEL
The utility model provides a subway station excavation supporting construction, the purpose is having the bearing structure stability at this subway station excavation supporting construction, and the reinforced concrete of diaphragm wall supports reasonable in design, easily is under construction and pouring.
In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:
a subway station foundation pit excavation supporting structure comprises a cross beam, reinforced concrete crown beams and underground continuous walls, wherein the tops of the underground continuous walls are fixedly connected with the reinforced concrete crown beams, the inner walls of the reinforced concrete crown beams are fixedly connected with the cross beam, steel pipe supporting columns are arranged between the underground continuous walls, threaded steel bar bolts are fixedly installed at the left end and the right end of each steel pipe supporting column, and fastening plates and pre-buried steel plates are fixedly installed on the outer walls of the threaded steel bar bolts; underground diaphragm wall mainly comprises bottom basement stratum, the downthehole concrete layer of stake and fixed sleeve, the bottom basement stratum sets up in the foundation ditch, fixed sleeve fixed mounting is on the outside on the downthehole concrete layer of stake, every the end of twisted steel bolt all runs through fixed sleeve and extends to the downthehole concrete layer of stake, every the equal fixed mounting in end of twisted steel bolt has the shear bar, shear bar and the downthehole concrete layer fixed connection of stake, pre-buried steel sheet fixed mounting is on fixed sleeve's lateral wall, the mounting plate sets up the side at pre-buried steel sheet, fixed mounting has the ring mounting panel on the outer wall of steel pipe support column, install the anchor rope main part on the ring mounting panel, the other end top of anchor rope main part articulates on underground diaphragm wall's inner wall.
Preferably, in the excavation supporting structure for the foundation pit of the subway station, at least two steel pipe supporting columns are arranged below the cross beam in an equally-divided manner.
Based on above-mentioned technical characteristics, through a plurality of settings of steel pipe support column for underground continuous wall atress is even, and support stability is strong.
Preferably, in the above-mentioned subway station foundation ditch excavation supporting construction, the shear bars are arranged at the end of each twisted steel bolt in an annular array shape integrated into one piece, and the shear bars are installed on the outer wall of the twisted steel bolt in a transversely equant manner.
Based on above-mentioned technical characteristic, the twisted steel bolt passes through the setting of shear force muscle, can improve the stability of connection structure between twisted steel bolt and the downthehole concrete layer of stake.
Preferably, in the above subway station foundation pit excavation supporting structure, be provided with fixing bolt between ring mounting panel and the anchor rope main part, and the bottom position of anchor rope main part passes through fixing bolt and fixing bolt fastening connection, fixing bolt's outer wall is provided with the anchor rope cardboard, the anchor rope cardboard sets up on the outer wall of ring mounting panel.
Based on above-mentioned technical characteristics, through the setting of fixing bolt and anchor rope cardboard, connection structure's fastening nature between ring mounting panel and the anchor rope main part can be improved.
Preferably, among the above-mentioned subway station excavation supporting construction, the support frame is installed to the outer wall upper and lower symmetry of twisted steel bolt, the support frame is the right triangle setting, and support frame fixed mounting is at fixed sleeve's inner wall.
Based on above-mentioned technical characteristics, through right triangle support frame structure's setting, can improve connection structure's between fixed sleeve and the twisted steel bolt stability.
Preferably, in the above-mentioned subway station foundation ditch excavation supporting construction, the mounting plate passes through the outer wall swing joint of screw thread and twisted steel bolt.
Based on above-mentioned technical characteristics, through the setting of mounting plate, realization that can be quick is to fixed spacing work of pre-buried steel sheet and fixed sleeve, easily operation.
The utility model has the advantages that: the utility model discloses after the underground continuous wall of subway station foundation ditch excavates, through the setting of steel pipe support column and twisted steel bar bolt, make the atress of underground continuous wall even, support stability strong, can be even carry out firm support to subway station foundation ditch, guarantee the steadiness in the excavation process of foundation ditch and after the foundation ditch excavation is accomplished, and can guarantee that the work progress is safe, reliable, and the structure between steel pipe support column and the underground continuous wall is simple, the construction operation is convenient and high-efficient, the construction volume is little, the construction is simple and convenient, quick; to sum up the utility model has the advantages of simple structure and reasonable design and the construction is simple and convenient, excellent in use effect, ensures the steadiness after the excavation of underground diaphragm wall is accomplished among the foundation ditch excavation process, and then has improved engineering quality, is favorable to work such as excavation construction of subway station foundation ditch.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention;
fig. 3 is the internal structure schematic diagram of the underground continuous wall of the utility model.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a cross beam; 2. a reinforced concrete crown beam; 3. an underground diaphragm wall; 31. a bottom basement rock stratum; 32. a concrete layer in the pile hole; 33. fixing the sleeve; 4. supporting a steel pipe column; 5. a twisted steel bolt; 6. a fastening plate; 7. pre-burying a steel plate; 8. shearing ribs; 9. a support frame; 10. an anchor cable main body; 11. a circular ring mounting plate; 12. fixing the bolt; 13. anchor rope cardboard.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, the embodiment is a subway station foundation pit excavation supporting structure, which includes a beam 1, reinforced concrete crown beams 2 and underground continuous walls 3, the top of the underground continuous walls 3 is fixedly connected with the reinforced concrete crown beams 2, the inner walls of the reinforced concrete crown beams 2 are fixedly connected with the beam 1, steel pipe support columns 4 are arranged between the underground continuous walls 3, threaded steel bar bolts 5 are fixedly installed at the left and right ends of each steel pipe support column 4, and fastening plates 6 and pre-buried steel plates 7 are fixedly installed on the outer walls of the threaded steel bar bolts 5; the underground continuous wall 3 mainly comprises a bottom foundation layer 31, a pile hole inner concrete layer 32 and a fixing sleeve 33, wherein the bottom foundation layer 31 is arranged in a foundation pit, the fixing sleeve 33 is fixedly arranged on the outer side of the pile hole inner concrete layer 32, the tail end of each threaded steel bar bolt 5 penetrates through the fixing sleeve 33 and extends into the pile hole inner concrete layer 32, the tail end of each threaded steel bar bolt 5 is fixedly provided with a shear bar 8, the shear bar 8 is fixedly connected with the pile hole inner concrete layer 32, a pre-buried steel plate 7 is fixedly arranged on the outer side wall of the fixing sleeve 33, a fastening plate 6 is arranged on the side of the pre-buried steel plate 7, the fastening plate 6 is movably connected with the outer wall of the threaded steel bar bolt 5 through threads, the fixing and limiting work of the pre-buried steel plate 7 and the fixing sleeve 33 can be quickly realized through the arrangement of the fastening plate 6, the operation is easy, a circular ring mounting plate 11 is fixedly arranged, an anchor cable main body 10 is installed on a circular ring installation plate 11, the top of the other end of the anchor cable main body 10 is hinged on the inner wall of an underground continuous wall 3, a fixing bolt 12 is arranged between the circular ring installation plate 11 and the anchor cable main body 10, the bottom end part of the anchor cable main body 10 is fixedly connected with the fixing bolt 12 through the fixing bolt 12, an anchor cable clamping plate 13 is arranged on the outer wall of the fixing bolt 12, the anchor cable clamping plate 13 is arranged on the outer wall of the circular ring installation plate 11, the tightness of a connection structure between the circular ring installation plate 11 and the anchor cable main body 10 can be improved through the arrangement of the fixing bolt 12 and the anchor cable clamping plate 13, two steel pipe support columns 4 are installed below a cross beam 1 in an equal division mode, through a plurality of arrangement of the steel pipe support columns 4, the underground continuous wall 3 is uniformly stressed, the support stability is strong, shear bars 8 are, and shear bar 8 is horizontal equipartition installation on the outer wall of twisted steel bolt 5, twisted steel bolt 5 passes through shear bar 8's setting, can improve the stability of connection structure between twisted steel bolt 5 and the downthehole concrete layer 32 of stake, support frame 9 is installed to the outer wall longitudinal symmetry of twisted steel bolt 5, support frame 9 is the right triangle setting, and support frame 9 fixed mounting is at the inner wall of fixing sleeve 33, through the setting of right triangle support frame 9 structure, can improve connection structure's between fixing sleeve 33 and the twisted steel bolt 5 stability.
In the concrete implementation of the utility model, after the underground continuous wall 3 of the subway station foundation pit is excavated, when in construction, the left and right ends of the steel pipe support column 4 are fixedly provided with the twisted steel bar bolt 5, the two ends of the twisted steel bar bolt 5 are penetrated through the fixed sleeve 33, the support frame 9 of the outer wall of the twisted steel bar bolt 5 is fixedly arranged on the inner wall of the fixed sleeve 33, the stability of the connection structure between the fixed sleeve 33 and the twisted steel bar bolt 5 can be improved by arranging the structure of the right-angled triangle support frame 9, then the two ends of the twisted steel bar bolt 5 are extended into the concrete layer 32 in the pile hole for pouring, the twisted steel bar bolt 5 can improve the stability of the connection structure between the twisted steel bar bolt 5 and the concrete layer 32 in the pile hole by arranging the shear bars 8 during pouring, and the underground continuous wall 3 is uniformly stressed by arranging the steel pipe support column 4, support stability is strong, the anchor rope main part 10 that sets up between the inner wall of last steel pipe support column 4 and underground continuous wall 3, the stability of improvement steel pipe support column 4 structure that can be further, guarantee the steadiness after excavation in-process and the foundation ditch excavation are accomplished, and can guarantee that the work progress is safe, reliable, and the simple structure between steel pipe support column 4 and the underground continuous wall 3, construction operation is convenient and high-efficient, the construction volume is little, the construction is simple and convenient, quick.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a subway station excavation supporting construction, includes crossbeam (1), reinforced concrete crown beam (2) and underground continuous wall (3), its characterized in that: the top of the underground continuous wall (3) is fixedly connected with a reinforced concrete crown beam (2), the inner wall of the reinforced concrete crown beam (2) is fixedly connected with a cross beam (1), steel pipe support columns (4) are arranged between the underground continuous walls (3), threaded steel bar bolts (5) are fixedly installed at the left end and the right end of each steel pipe support column (4), and fastening plates (6) and pre-buried steel plates (7) are fixedly installed on the outer walls of the threaded steel bar bolts (5); underground continuous wall (3) mainly comprises bottom basement rock stratum (31), the downthehole concrete layer of stake (32) and fixed sleeve (33), bottom basement rock stratum (31) sets up in the foundation ditch, fixed sleeve (33) fixed mounting is on the outside on the downthehole concrete layer of stake (32), every in the end of twisted steel bolt (5) all runs through fixed sleeve (33) and extends to downthehole concrete layer of stake (32), every the equal fixed mounting in end of twisted steel bolt (5) has shear bar (8), shear bar (8) and the downthehole concrete layer of stake (32) fixed connection, pre-buried steel sheet (7) fixed mounting is on the lateral wall of fixed sleeve (33), mounting plate (6) set up the side at pre-buried steel sheet (7), fixed mounting has ring mounting panel (11) on the outer wall of steel support column (4), an anchor cable main body (10) is installed on the circular ring installation plate (11), and the top of the other end of the anchor cable main body (10) is hinged to the inner wall of the underground continuous wall (3).
2. The subway station foundation pit excavation supporting structure of claim 1, characterized in that: two steel pipe support columns (4) are arranged below the cross beam (1) in an at least equal division mode.
3. The subway station foundation pit excavation supporting structure of claim 1, characterized in that: the shear bars (8) are integrally formed at the tail end of each threaded steel bar bolt (5) in an annular array shape, and the shear bars (8) are transversely installed on the outer wall of each threaded steel bar bolt (5) in equal intervals.
4. The subway station foundation pit excavation supporting structure of claim 1, characterized in that: be provided with fixing bolt (12) between ring mounting panel (11) and anchor rope main part (10), and the bottom position of anchor rope main part (10) passes through fixing bolt (12) and fixing bolt (12) fastening connection, the outer wall of fixing bolt (12) is provided with anchor rope cardboard (13), anchor rope cardboard (13) set up on the outer wall of ring mounting panel (11).
5. The subway station foundation pit excavation supporting structure of claim 1, characterized in that: support frame (9) are installed to the outer wall longitudinal symmetry of twisted steel bolt (5), support frame (9) are right angled triangle and set up, and support frame (9) fixed mounting is at the inner wall of fixed sleeve (33).
6. The subway station foundation pit excavation supporting structure of claim 1, characterized in that: the fastening plate (6) is movably connected with the outer wall of the threaded steel bar bolt (5) through threads.
CN202020262988.XU 2020-03-05 2020-03-05 Subway station foundation pit excavation supporting construction Active CN212248263U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020262988.XU CN212248263U (en) 2020-03-05 2020-03-05 Subway station foundation pit excavation supporting construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020262988.XU CN212248263U (en) 2020-03-05 2020-03-05 Subway station foundation pit excavation supporting construction

Publications (1)

Publication Number Publication Date
CN212248263U true CN212248263U (en) 2020-12-29

Family

ID=73992109

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020262988.XU Active CN212248263U (en) 2020-03-05 2020-03-05 Subway station foundation pit excavation supporting construction

Country Status (1)

Country Link
CN (1) CN212248263U (en)

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