CN110273432B - Extension construction method for main structure of existing subway station - Google Patents
Extension construction method for main structure of existing subway station Download PDFInfo
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- CN110273432B CN110273432B CN201910511842.6A CN201910511842A CN110273432B CN 110273432 B CN110273432 B CN 110273432B CN 201910511842 A CN201910511842 A CN 201910511842A CN 110273432 B CN110273432 B CN 110273432B
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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
Abstract
The invention discloses an extension construction method of a main body structure of an existing subway station, S1, before construction, the subway station is isolated, a building body on an original platform is dismantled, and the original platform is left; s2, reinforcing the outer side of the original foundation column; s3, grooving the two sides of the original platform, and arranging a plurality of reinforcing ribs on the lower sides of the two ends of the original platform; s4, installing an extension platform; and S6, supporting and fixing the original platform and the extension platform. According to the invention, the original foundation column and the platform are reinforced and widened, so that the influence of subway construction on the surrounding environment is greatly reduced, the construction difficulty is reduced, the construction efficiency is improved, the structural strength is high, the support is safe and reliable, the cost is reduced, and the construction problem of an overhead subway station is solved.
Description
Technical Field
The invention relates to the field of building correlation, in particular to a construction method for expanding a main structure of an existing subway station.
Background
Along with the continuous expansion of a rail transit network, the passenger flow attracted by a subway is increased day by day, the two-line or multi-line transfer condition is increased, the impact of the transfer passenger flow aggravates the influence of insufficient station scale, and part of stations are urgently required to be expanded in scale and improve the service level; however, the existing subway station is modified, the functions of the station are improved, the scale of the station is enlarged, the adopted technical means are very limited, the overhead subway station is difficult to add, the extension of the overhead subway station is difficult to construct, the construction period is long, the construction cost is high, and the existing subway station main body structure extension construction method is designed to solve the problems.
Disclosure of Invention
The invention aims to provide a method for expanding and constructing a main structure of an existing subway station, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an existing subway station main structure extension construction method comprises the following steps:
s1, isolating the subway station before construction, and dismantling the building on the original platform to leave the original platform;
s2, reinforcing the outer side of the original foundation column, and pouring a layer of reinforcing column to enhance the bearing capacity of the original foundation column;
s3, grooving the two sides of the original platform, chiseling a plurality of clamping grooves, fixing the connecting steel frames in the clamping grooves through concrete, and arranging a plurality of reinforcing ribs on the lower sides of the two ends of the original platform through connecting devices;
s4, pouring the model to obtain an extension platform, and hoisting the extension platform by a crane to clamp the clamping columns on one side of the extension platform into the connecting steel frames in the clamping grooves on the two sides of the original platform so as to keep the extension platform and the original platform in a horizontal state;
s5, connecting one end of the inclined strut with a connecting block below the extension platform through a connecting device, then connecting the other end of the inclined strut with a reinforcing column through the connecting device, and then connecting the reinforcing rib with the inclined strut through the connecting device;
s6, reinforcing the joint of the original platform and the extension platform, and fixing the connecting steel plate at the joint of the original platform and the extension platform through the fixing screws and the fixing screw holes to obtain a new widened platform.
Preferably, the connecting device comprises a fixed steel block, a fixed screw hole and a steel connecting groove, the fixed steel block is respectively arranged on the connecting block and the reinforcing column, the steel connecting groove is respectively arranged at two ends of the inclined strut, the fixed screw hole is correspondingly arranged on the steel connecting groove and the fixed steel block, and the steel connecting groove and the fixed steel block are connected with the fixed screw hole through the fixed screw.
Preferably, fixing device is including connecting steel frame, connecting steel plate, fixed screw and fixed screw, the connecting steel frame passes through the concrete and fixes in the draw-in groove of the both sides of former platform, the card post card on the extension platform is in connecting the steel frame, connecting steel plate passes through fixed screw and fixed screw fixed mounting in the junction of former platform and extension platform.
Preferably, one end of the reinforcing rib is arranged at the lower end of the original platform through a connecting device, and the other end of the reinforcing rib is fixedly connected with the inclined strut through the connecting device.
Preferably, in step S2, the inner diameter of the reinforcement column is determined by rigorous calculation before the reinforcement column is poured, so as to ensure that the support strength of the reinforcement column can withstand a new subway station.
Preferably, when the extension platform and the reinforcing column are poured, the fixed steel blocks in the connecting device are embedded in the pouring frames of the extension platform and the reinforcing column, and then concrete is poured, and when the diagonal brace and the reinforcing rib are poured, the steel connecting grooves are embedded in the pouring frames of the diagonal brace and the reinforcing rib, and then concrete is poured.
Compared with the prior art, the invention has the beneficial effects that: according to the expansion construction method of the main structure of the existing subway station, the reinforcing column and the expansion platform are added on the original foundation column and the original platform, and the inclined strut and the reinforcing rib are arranged at the same time, so that the safety performance of the subway station is guaranteed while the expansion of the subway station is guaranteed, and meanwhile, the structure is simple and the construction is convenient; the peripheral environmental interference of subway station is less during the construction, can not seriously influence the traffic and pass, consumes with low costs, and construction cycle is short, effectively solves overhead subway station construction difficult problem.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a connection device of the present invention;
in the figure: 1. an original pillar; 2. an original platform; 3. a reinforcement column; 4. a connecting device; 5. expanding a platform; 6. a card slot; 7. clamping the column; 8. a fixing device; 9. connecting blocks; 10. bracing; 11. reinforcing ribs; 12. fixing the steel block; 13. fixing screws; 14. fixing screw holes; 15. connecting steel grooves; 16. connecting the steel frame; 17. and connecting the steel plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides a technical solution: an existing subway station main structure extension construction method comprises the following steps:
s1, isolating the subway station before construction, and dismantling the building on the original platform 2 to leave the original platform 2;
s2, reinforcing the outer side of the original foundation column 1, and pouring a layer of reinforcing column 3 to enhance the bearing capacity of the original foundation column 1;
s3, grooving the two sides of the original platform 2, chiseling a plurality of clamping grooves 6, fixing the connecting steel frames 16 in the clamping grooves 6 through concrete, and arranging a plurality of reinforcing ribs 11 on the lower sides of the two ends of the original platform 2 through connecting devices 4;
s4, pouring the model to obtain an extension platform 5, and hoisting the extension platform 5 by a crane to clamp the clamping columns 7 on one side of the extension platform 5 into the connecting steel frames 16 in the clamping grooves 6 on the two sides of the original platform 2 so as to keep the extension platform 5 and the original platform 2 in a horizontal state;
s5, connecting one end of an inclined strut 10 with a connecting block 9 below an extension platform 5 through a connecting device 4, then connecting the other end of the inclined strut 10 with a reinforcing column 3 through the connecting device 4, and then connecting a reinforcing rib 11 with the inclined strut 10 through the connecting device 4;
s6, reinforcing the joint of the original platform 2 and the extension platform 5, and fixing the connecting steel plate 17 at the joint of the original platform 2 and the extension platform 5 through the fixing screws 13 and the fixing screw holes 14 by the connecting steel plate 17, so that a new widened platform can be obtained.
Further, the connecting device 4 comprises a fixed steel block 12, a fixed screw 13, a fixed screw hole 14 and a steel connecting groove 15, the fixed steel block 12 is respectively arranged on the connecting block 9 and the reinforcing column 3, the steel connecting groove 15 is respectively arranged at two ends of the inclined strut 10, the steel connecting groove 15 and the fixed steel block 12 are respectively and correspondingly provided with the fixed screw hole 14, and the steel connecting groove 15 and the fixed steel block 12 are connected through the fixed screw 13 and the fixed screw hole 14.
Further, fixing device 8 is including connecting steel frame 16, steel sheet 17, fixed screw 14 and set screw 13, connecting steel frame 16 passes through the concrete and fixes in the draw-in groove 6 of the both sides of former platform 2, card post 7 card on the extension platform 5 is in connecting steel frame 16, steel sheet 17 passes through set screw 13 and fixed screw 14 fixed mounting in the junction of former platform 2 and extension platform 5.
Furthermore, one end of the reinforcing rib 11 is arranged at the lower end of the original platform 2 through the connecting device 4, and the other end of the reinforcing rib 11 is fixedly connected with the inclined strut 10 through the connecting device 4.
Further, in step S2, the inner diameter of the reinforcement column 3 is determined by rigorous calculation before the reinforcement column 3 is poured, so as to ensure that the support strength of the reinforcement column 3 and the original foundation column 1 can withstand a new subway station.
Further, when the extension platform 5 and the reinforcing column 3 are poured, the fixed steel blocks 12 in the connecting device 4 are embedded in the pouring frames of the extension platform 5 and the reinforcing column 3, and then concrete is poured, and when the diagonal brace 10 and the reinforcing rib 11 are poured, the steel connecting grooves 15 are embedded in the pouring frames of the diagonal brace 10 and the reinforcing rib 11, and then concrete is poured.
The working principle is as follows: the invention relates to an extension construction method of a main body structure of an existing subway station, during construction, firstly, the subway station is isolated, a building body on an original platform 2 is removed, the original platform is left, then, the inner diameter of a reinforcing column 3 is determined through rigorous calculation, the supporting strength of the reinforcing column 3 and an original foundation column 1 can be guaranteed to bear a new subway station, the outer side of the original foundation column 1 is reinforced, a layer of reinforcing column 3 is poured to enhance the bearing capacity of the original foundation column 1, after the reinforcing column 3 is poured, grooves are formed in two sides of the original platform 2, a plurality of clamping grooves 6 are formed, connecting steel frames 16 are fixed in the clamping grooves 6 through concrete, holes are formed in the lower sides of two ends of the original platform 2, a plurality of reinforcing ribs 11 are poured through reinforced concrete, then, model pouring of the extension platform and inclined struts is carried out to obtain an extension platform 5 and inclined struts 10, and the clamping columns 7 on one side of the extension platform 5 are clamped into the connecting steel frames 16 in the clamping grooves 6 on two sides of the original platform 2 through lifting of the extension platform In the method, an extension platform 5 and an original platform 2 are kept in a horizontal state, one end of an inclined strut is connected with a connecting block 9 below the extension platform 5 through a connecting device 4, the other end of the inclined strut 10 is connected with a reinforcing column 3 through the connecting device 4, then a reinforcing rib 11 is connected with the inclined strut 10 through the connecting device 4, the joint of the original platform 2 and the extension platform 5 is reinforced, and a connecting steel plate 17 is fixed at the joint of the original platform 2 and the extension platform 5 through a fixing screw 13 and a fixing screw hole 14; when the extension platform 5 and the reinforcing column 3 are poured, the fixed steel blocks 12 in the connecting device 4 are embedded in pouring frames of the extension platform 5 and the reinforcing column 3, and then concrete pouring is carried out, and meanwhile when the inclined strut 10 and the reinforcing rib 11 are poured, the steel connecting groove 15 is embedded in the pouring frames of the inclined strut 10 and the reinforcing rib 11, and then concrete pouring is carried out; the method can greatly shorten the extension construction period of the elevated subway station, simultaneously reduce the construction difficulty and cost, and effectively meet the extension requirement.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A construction method for expanding a main structure of an existing subway station is characterized by comprising the following steps:
s1, isolating the subway station before construction, and dismantling the building on the original platform (2) to leave the original platform (2);
s2, reinforcing the outer side of the original foundation column (1), and pouring a layer of reinforcing column (3) to enhance the bearing capacity of the original foundation column (1);
s3, grooving the two sides of the original platform (2), digging a plurality of clamping grooves (6), fixing a connecting steel frame (16) in the clamping grooves (6) through concrete, and arranging a plurality of reinforcing ribs (11) on the lower sides of the two ends of the original platform (2) through connecting devices (4); the connecting device (4) comprises a fixed steel block (12), a fixed screw (13), a fixed screw hole (14) and a steel connecting groove (15), the fixed steel block (12) is respectively arranged on the connecting block (9) and the reinforcing column (3), the steel connecting groove (15) is respectively arranged at two ends of the inclined strut (10), the steel connecting groove (15) and the fixed steel block (12) are respectively and correspondingly provided with the fixed screw hole (14), and the steel connecting groove (15) and the fixed steel block (12) are connected with the fixed screw hole (14) through the fixed screw (13); the fixing device (8) comprises a connecting steel frame (16), a connecting steel plate (17), a fixing screw hole (14) and a fixing screw (13), wherein the connecting steel frame (16) is fixed in clamping grooves (6) on two sides of the original platform (2) through concrete;
s4, pouring the model to obtain an extension platform (5), hoisting the extension platform (5) by a crane to clamp the clamping columns (7) on one side of the extension platform (5) into the connecting steel frames (16) in the clamping grooves (6) on the two sides of the original platform (2), and keeping the extension platform (5) and the original platform (2) in a horizontal state; the connecting steel plate (17) is fixedly arranged at the joint of the original platform (2) and the extension platform (5) through a fixing screw (13) and a fixing screw hole (14);
s5, connecting one end of an inclined strut (10) with a connecting block (9) below an extension platform (5) through a connecting device (4), then connecting the other end of the inclined strut (10) with a reinforcing column (3) through the connecting device (4), and then connecting a reinforcing rib (11) with the inclined strut (10) through the connecting device (4);
s6, reinforcing the joint of the original platform (2) and the extension platform (5), and fixing the connecting steel plate (17) at the joint of the original platform (2) and the extension platform (5) through the fixing screws (13) and the fixing screw holes (14) by the connecting steel plate (17), so that a new widened platform can be obtained.
2. The extension construction method of the main body structure of the existing subway station as claimed in claim 1, wherein: one end of the reinforcing rib (11) is arranged at the lower end of the original platform (2) through the connecting device (4), and the other end of the reinforcing rib (11) is fixedly connected with the inclined strut (10) through the connecting device (4).
3. The extension construction method of the main body structure of the existing subway station as claimed in claim 1, wherein: in the step S2, the inner diameter of the reinforcing column (3) is determined through rigorous calculation before the reinforcing column (3) is poured, and the supporting strength of the reinforcing column (3) and the original foundation column (1) can bear a new subway station.
4. The extension construction method of the main body structure of the existing subway station as claimed in claim 1, wherein: when the extension platform (5) and the reinforcing column (3) are poured, the fixed steel blocks (12) in the connecting device (4) are pre-buried in pouring frames of the extension platform (5) and the reinforcing column (3) and then concrete is poured, and meanwhile when the inclined strut (10) and the reinforcing column (11) are poured, the steel connecting grooves (15) are pre-buried in the pouring frames of the inclined strut (10) and the reinforcing column (11) and then concrete is poured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910511842.6A CN110273432B (en) | 2019-06-13 | 2019-06-13 | Extension construction method for main structure of existing subway station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910511842.6A CN110273432B (en) | 2019-06-13 | 2019-06-13 | Extension construction method for main structure of existing subway station |
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| Publication Number | Publication Date |
|---|---|
| CN110273432A CN110273432A (en) | 2019-09-24 |
| CN110273432B true CN110273432B (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910511842.6A Expired - Fee Related CN110273432B (en) | 2019-06-13 | 2019-06-13 | Extension construction method for main structure of existing subway station |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112727134B (en) * | 2020-12-10 | 2021-09-28 | 中铁五局集团建筑工程有限责任公司 | Construction method for rebuilding and expanding main structure of existing overhead operation subway station building |
| CN112610244B (en) * | 2020-12-10 | 2023-04-07 | 中铁五局集团建筑工程有限责任公司 | Prefabricated part for expanding existing elevated operation subway station platform and installation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002115260A (en) * | 2000-10-11 | 2002-04-19 | Shimizu Corp | Extension method for basement |
| CN103924789B (en) * | 2014-03-14 | 2015-12-16 | 中冶建筑研究总院有限公司 | Come into operation platform transformation diagonal brace widening structure |
| CN106088660B (en) * | 2016-08-12 | 2018-11-09 | 北京住总集团有限责任公司 | A kind of building up station platform widens the construction method of reconstruction structure system |
| CN106285035A (en) * | 2016-08-31 | 2017-01-04 | 西安长庆科技工程有限责任公司 | A kind of method of prefabricated assembled reorganization and expansion building structure node and structure node thereof |
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Inventor after: Huang Yanji Inventor after: Huang Hui Inventor after: Wang Huan Inventor before: Wang Huan |
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Granted publication date: 20210618 |