CN103362073A - Method for pushing frame bridge - Google Patents

Method for pushing frame bridge Download PDF

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Publication number
CN103362073A
CN103362073A CN2013103438070A CN201310343807A CN103362073A CN 103362073 A CN103362073 A CN 103362073A CN 2013103438070 A CN2013103438070 A CN 2013103438070A CN 201310343807 A CN201310343807 A CN 201310343807A CN 103362073 A CN103362073 A CN 103362073A
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China
Prior art keywords
casing
jacking
jack
frame bridge
foundation ditch
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CN2013103438070A
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CN103362073B (en
Inventor
李强
龙国俊
王继成
鄢全成
顾玉峰
姜磊
肖诚
于志勇
王佳武
黄剑
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China Railway Sixth Group Co Ltd
Tianjin Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
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China Railway Sixth Group Co Ltd
Tianjin Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
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Priority to CN201310343807.0A priority Critical patent/CN103362073B/en
Publication of CN103362073A publication Critical patent/CN103362073A/en
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Publication of CN103362073B publication Critical patent/CN103362073B/en
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Abstract

The invention discloses a method for pushing a frame bridge. According to the method, a box body is pushed into one side of an existing railway at the position of a box body to be pushed, a plurality of box bodies are pushed into the other side of the existing railway, and therefore butt joint can be achieved. According to the method for pushing the frame bridge, a relaying method is combined with an abutting method under the condition of not affecting the normal operation of the railway, the problem that the space of a construction site is narrow and small is solved, a protruding head is prevented from occurring to the next box body through a steel plate arranged at the rear end of a base plate of the last box body in the pushing process of multiple box bodies, the faulting of slab ends is made not to occur to the box bodies in the butt joint, and therefore the operation security of the railway is guaranteed, the quality of the frame bridge is guaranteed, and reference is provided for the construction of other frame bridges in future.

Description

A kind of frame bridge jacking method
Technical field
The invention belongs to the construction of railways technical field, particularly relate to a kind of frame bridge jacking method.
Background technology
Along with the develop rapidly of urban construction, volume of transport is also in continuous increase.When existing railway and highway grade crossing, common way is to build frame bridge under existing railway.When some frame bridge or long or can't satisfy the requiring of traffic because inner width is too small the time because of service life, just need to displace with new frame bridge old frame bridge.Method of replacing commonly used is jacking at present, the frame bridge that surpasses 30m for jacking length, usually adopt the relaying method or to the top method, wherein the relaying method is to excavate first a large foundation ditch in the foundation soil of existing railway one side, then the prefabricated more piece casing for the treatment of the formation new frame bridge of jacking in foundation ditch, then remove first the old frame bridge rear end part structure near foundation ditch, place many jack in the base plate rear end both sides of first segment casing afterwards, place again rear back beam many jack back, then utilize the top power of jack with opposite side jacking one segment distance of first segment casing along the jacking direction to existing railway, remove again afterwards one section old frame bridge, again jacking, then place many jack in the base plate rear end both sides of second section casing, and the rear back beam of first segment box back moved to jack rear portion behind the second section casing, utilize jack top power behind the second section casing with second, the simultaneously jacking of first segment casing, so repeatedly, until the whole jackings of all casings are put in place.To excavate respectively a foundation ditch in the existing line both sides to the top method, and in each foundation ditch a prefabricated casing, the job practices of utilizing simultaneously jacking of jack and achieving a butt joint by both sides.But, the problem that above-mentioned relaying method exists is: because some old frame bridge is in the area, down town, building on every side all cannot be removed, therefore the either side of existing line does not all have the place that excavation can be held a plurality of casings, be that site space is narrow, like this just can't adopt merely the relaying method to construct.And be to be only limited to each jacking one joint casing of both sides to the shortcoming that the top method exists, therefore inapplicable for the frame bridge that is consisted of by the more piece casing.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of narrow frame bridge jacking method of site space that is applicable to.
In order to achieve the above object, frame bridge jacking method provided by the invention comprises the following step that carries out in order:
1) excavates respectively a foundation ditch that can hold a joint casing in the existing railway both sides for the treatment of jacking casing place, then difference site prefabrication one joint casing A and saves casing B in these two foundation ditches, wherein casing A is single-unit jacking casing, and casing B is more piece jacking casing;
2) reserve respectively a pick nest at its base plate rear end two side lower parts during prefabricated box B, simultaneously an end of a block plate is embedded in the rear end face lower end part of a pick nest, and the other end of steel plate extends horizontally to the plate outer side of casing B;
3) above the steel plate in each pick nest of casing B many jack are set respectively, then back beam after the jack rear end arranges, begin limit segmentation removal of old framework bridge limit to the direction jacking casing B of casing A from the old frame bridge outside left near casing B afterwards, shift out behind the foundation ditch at its place prefabricated box C in this foundation ditch until casing B, reserve respectively a preformed groove at its base plate front end two side lower parts during prefabricated box C;
4) meanwhile, according to the direction jacking casing A of jacking method from another foundation ditch to casing B of above-mentioned casing B, until reach design attitude;
5) in the pick nest of the base plate rear end both sides of casing C, many jack are set respectively, then rear back beam is placed on the rear portion of this jack, and the jack between casing B and the casing C opened, so that its pick is against the position, base plate front end both sides of casing C, make simultaneously two block plate outer ends on the casing B be positioned at respectively two preformed grooves of casing C;
6) limit segmentation removal of old framework bridge lateral dominance uses direction while jacking casing B from the jack at casing C rear portion to casing A and casing C according to the method described above;
7) as also having casing to need jacking, prefabricated next joint casing and repeat step 5)-step 6) in this foundation ditch again is until achieve a butt joint casing B and casing A;
8) jack between dismounting casing B and the casing C, the jack of a joint box back closes up casing B and casing C after utilizing, and so repeatedly, until the whole jackings of all casings put in place, finishes thus whole jack-in process.
The length of described steel plate is 2.5-3 meters.
The length of described preformed groove is greater than the length that is positioned at casing B outside on the steel plate.
Frame bridge jacking method provided by the invention is not in the situation that affect the normal operation of railway, with the relaying method with the top method is combined, solved the narrow problem in space, job site, and head appears pricking in a joint casing after utilizing the steel plate that is arranged on last joint box bottom rear end to prevent in the more piece jacking, make casing faulting of slab ends in docking, not occur, therefore both guarantee the security of operation of railway, guaranteed again the quality of frame bridge, for from now on other frame bridges constructions provide reference.
Description of drawings
Fig. 1 is casing B, the casing C-structure top view of frame bridge jacking method provided by the invention institute jacking.
Fig. 2 is casing B, the casing C-structure lateral view of frame bridge jacking method provided by the invention institute jacking.
The specific embodiment
Below in conjunction with the drawings and specific embodiments frame bridge jacking method provided by the invention is elaborated.
Such as Fig. 1-shown in Figure 2, frame bridge jacking method provided by the invention comprises the following step that carries out in order:
1) excavates respectively a foundation ditch that can hold a joint casing in the existing railway both sides for the treatment of jacking casing place, then difference site prefabrication one joint casing A and saves casing B in these two foundation ditches, wherein casing A is single-unit jacking casing, and casing B is more piece jacking casing;
2) reserve respectively a pick nest 1 at its base plate rear end two side lower parts during prefabricated box B, simultaneously an end of a block plate 2 is embedded in the rear end face lower end part of a pick nest 1, and the other end of steel plate 2 extends horizontally to the plate outer side of casing B, and the length of steel plate 2 is 2.5-3 meters;
3) above the steel plate 2 in each pick nest 1 of casing B many jack 3 are set respectively, then back beam 4 after jack 3 rear ends arrange, begin limit segmentation removal of old framework bridge limit to the direction jacking casing B of casing A from the old frame bridge outside left near casing B afterwards, shift out behind the foundation ditch at its place prefabricated box C in this foundation ditch until casing B, reserve respectively a preformed groove 5 at its base plate front end two side lower parts during prefabricated box C, the length of described preformed groove 5 is greater than the length that is positioned at casing B outside on the steel plate 2, and steel plate 2 can not affect the docking effect after casing B and casing C close up like this;
4) meanwhile, according to the direction jacking casing A of jacking method from another foundation ditch to casing B of above-mentioned casing B, until reach design attitude;
5) in the base plate rear end both sides of casing C pick nest 1, many jack 3 are set respectively, then rear back beam 4 is placed on the rear portion of this jack 3, and the jack 3 between casing B and the casing C opened, so that its pick is against the position, base plate front end both sides of casing C, make simultaneously two block plates, 2 outer ends on the casing B be positioned at respectively two preformed grooves 5 of casing C, its effect is to guarantee that casing B, casing C after jacking finishes, are in same plane, reaches perfect docking;
6) limit segmentation removal of old framework bridge lateral dominance uses direction while jacking casing B from the jack 3 at casing C rear portion to casing A and casing C according to the method described above;
7) as also having casing to need jacking, prefabricated next joint casing and repeat step 5)-step 6) in this foundation ditch again is until achieve a butt joint casing B and casing A;
8) jack 3 between dismounting casing B and the casing C, the jack 3 of a joint box back closes up casing B and casing C after utilizing, and so repeatedly, until the whole jackings of all casings put in place, finishes thus whole jack-in process.
The length of described preformed groove 5 is greater than the length that is positioned at casing B outside on the steel plate 2.
Take certain bridge improvement project K135+215.43.5m-6.5m frame structure bridge as example, this bridge total length 70.8m, the long 30m of casing A wherein, the long 20m of casing B, the long 20.8m of casing C.This frame bridge is two holes, overall width 11.5m, jacking is divided into A, B, C three joints in this engineering, with the existing railway angle be 90 °, from west to east jacking of casing A, casing B, from east to west jacking of casing C.

Claims (3)

1. frame bridge jacking method, it is characterized in that: described frame bridge jacking method comprises the following step that carries out in order:
1) excavates respectively a foundation ditch that can hold a joint casing in the existing railway both sides for the treatment of jacking casing place, then difference site prefabrication one joint casing A and saves casing B in these two foundation ditches, wherein casing A is single-unit jacking casing, and casing B is more piece jacking casing;
2) reserve respectively a pick nest (1) at its base plate rear end two side lower parts during prefabricated box B, simultaneously an end of a block plate (2) is embedded in the rear end face lower end part of a pick nest (1), and the other end of steel plate (2) extends horizontally to the plate outer side of casing B;
3) top of the steel plate (2) in each pick nest (1) of casing B arranges respectively many jack (3), then in jack (3) rear end rear back beam (4) is set, begin limit segmentation removal of old framework bridge limit to the direction jacking casing B of casing A from the old frame bridge outside left near casing B afterwards, shift out behind the foundation ditch at its place prefabricated box C in this foundation ditch until casing B, reserve respectively a preformed groove (5) at its base plate front end two side lower parts during prefabricated box C;
4) meanwhile, according to the direction jacking casing A of jacking method from another foundation ditch to casing B of above-mentioned casing B, until reach design attitude;
5) many jack (3) are set respectively in the base plate rear end both sides of casing C pick nests (1), then rear back beam (4) is placed on the rear portion of this jack (3), and the jack (3) between casing B and the casing C opened, so that its pick is against the position, base plate front end both sides of casing C, make simultaneously two block plates (2) outer end on the casing B be positioned at respectively two preformed grooves (5) of casing C;
6) limit segmentation removal of old framework bridge lateral dominance uses direction while jacking casing B from the jack (3) at casing C rear portion to casing A and casing C according to the method described above;
7) as also having casing to need jacking, prefabricated next joint casing and repeat step 5)-step 6) in this foundation ditch again is until achieve a butt joint casing B and casing A;
8) jack (3) between dismounting casing B and the casing C, the jack (3) of a joint box back closes up casing B and casing C after utilizing, and so repeatedly, until the whole jackings of all casings put in place, finishes thus whole jack-in process.
2. frame bridge jacking method according to claim 1, it is characterized in that: the length of described steel plate (2) is 2.5-3 meters.
3. frame bridge jacking method according to claim 1, it is characterized in that: the length of described preformed groove (5) is greater than the length that is positioned at casing B outside on the steel plate (2).
CN201310343807.0A 2013-08-08 2013-08-08 A kind of Framed underpass bridge method Active CN103362073B (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643640A (en) * 2013-12-19 2014-03-19 中铁六局集团天津铁路建设有限公司 Jacking-first and line-reinforcement-second jacking construction method for frame bridge
CN104652279A (en) * 2013-11-25 2015-05-27 北京城建设计发展集团股份有限公司 Box culvert advancing construction method for building new frame bridge above existing subway structure
CN104746532A (en) * 2015-04-08 2015-07-01 中铁六局集团天津铁路建设有限公司 Asymmetric constructing method of over-length cabinet with passenger railway lines running underneath
CN104746430A (en) * 2013-12-25 2015-07-01 中铁六局集团有限公司 Improved jacking excavation construction method
CN105066971A (en) * 2015-08-20 2015-11-18 中铁六局集团天津铁路建设有限公司 Strip-shaped frame bridge jacking measurement method
CN105064216A (en) * 2015-07-29 2015-11-18 中铁六局集团天津铁路建设有限公司 Method for preventing existing line from transversely moving during jacking super-long framed bridge
CN106274556A (en) * 2016-08-05 2017-01-04 中铁六局集团天津铁路建设有限公司 A kind of contact net bar changes shifting method
CN106918412A (en) * 2017-02-14 2017-07-04 北京铁路局天津工程项目管理部 A kind of monitoring method and system of frame core-tube system jacking construction
CN108411785A (en) * 2018-03-26 2018-08-17 沈阳铁道勘察设计院有限公司 A kind of method in novel setting gutter

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CN101343861A (en) * 2008-08-22 2009-01-14 中铁六局集团有限公司 Construction method for replacing old frame bridge by new frame bridge in existing railway lines
JP2009108573A (en) * 2007-10-30 2009-05-21 Kenjiro Uemura Box body laying method
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CN101935988A (en) * 2010-08-24 2011-01-05 攀钢集团冶金工程技术有限公司 Box culvert structure and jacking method of box culvert for penetrating roadbed

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104652279B (en) * 2013-11-25 2016-08-17 北京城建设计发展集团股份有限公司 Existing structure of the subway box culvert jacking construction method is worn on a kind of newly-built frame bridge
CN104652279A (en) * 2013-11-25 2015-05-27 北京城建设计发展集团股份有限公司 Box culvert advancing construction method for building new frame bridge above existing subway structure
CN103643640B (en) * 2013-12-19 2015-06-17 中铁六局集团天津铁路建设有限公司 Jacking-first and line-reinforcement-second jacking construction method for frame bridge
CN103643640A (en) * 2013-12-19 2014-03-19 中铁六局集团天津铁路建设有限公司 Jacking-first and line-reinforcement-second jacking construction method for frame bridge
CN104746430A (en) * 2013-12-25 2015-07-01 中铁六局集团有限公司 Improved jacking excavation construction method
CN104746430B (en) * 2013-12-25 2017-01-04 中铁六局集团有限公司 A kind of jacking excavation and construction method of improvement
CN104746532A (en) * 2015-04-08 2015-07-01 中铁六局集团天津铁路建设有限公司 Asymmetric constructing method of over-length cabinet with passenger railway lines running underneath
CN105064216A (en) * 2015-07-29 2015-11-18 中铁六局集团天津铁路建设有限公司 Method for preventing existing line from transversely moving during jacking super-long framed bridge
CN105064216B (en) * 2015-07-29 2016-08-24 中铁六局集团天津铁路建设有限公司 Prevent existing line from traversing method occurring during a kind of jacking extra-long frame bridge
CN105066971A (en) * 2015-08-20 2015-11-18 中铁六局集团天津铁路建设有限公司 Strip-shaped frame bridge jacking measurement method
CN106274556A (en) * 2016-08-05 2017-01-04 中铁六局集团天津铁路建设有限公司 A kind of contact net bar changes shifting method
CN106274556B (en) * 2016-08-05 2018-07-20 中铁六局集团天津铁路建设有限公司 A kind of contact net bar changes shifting method
CN106918412A (en) * 2017-02-14 2017-07-04 北京铁路局天津工程项目管理部 A kind of monitoring method and system of frame core-tube system jacking construction
CN108411785A (en) * 2018-03-26 2018-08-17 沈阳铁道勘察设计院有限公司 A kind of method in novel setting gutter

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