CN104746532A - Asymmetric constructing method of over-length cabinet with passenger railway lines running underneath - Google Patents

Asymmetric constructing method of over-length cabinet with passenger railway lines running underneath Download PDF

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Publication number
CN104746532A
CN104746532A CN201510161239.1A CN201510161239A CN104746532A CN 104746532 A CN104746532 A CN 104746532A CN 201510161239 A CN201510161239 A CN 201510161239A CN 104746532 A CN104746532 A CN 104746532A
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CN
China
Prior art keywords
casing
jacking
railway
asymmetric
casings
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
CN201510161239.1A
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Chinese (zh)
Inventor
王朝腾
孙小兵
王义彪
万其琨
郑华
蔡斌
孙军
张强
陈少鹏
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.)
China Railway Sixth Group Co Ltd
Tianjin Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
Original Assignee
China Railway Sixth Group Co Ltd
Tianjin Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Railway Sixth Group Co Ltd, Tianjin Railway Construction Co Ltd of China Railway Sixth Group Co Ltd filed Critical China Railway Sixth Group Co Ltd
Priority to CN201510161239.1A priority Critical patent/CN104746532A/en
Publication of CN104746532A publication Critical patent/CN104746532A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an asymmetric constructing method of an over-length cabinet with passenger railway lines running underneath. The asymmetric constructing method comprises the following steps: one foundation pit is excavated on each of two sides of a stranded railway where a new frame bridge will be arranged, and then one cabinet is prefabricated in each foundation pit; each cabinet is prefabricated in a two-section mode, and an intermediate relaying chamber is arranged between two sections; soil is excavated from two sides of the stranded railway, two cabinets are oppositely jacked to designed positions by adopting a lifting jack and the corresponding upper railway is reinforced; a closure section is cast in site at the closure position where said two cabinets are jacked. The asymmetric constructing method has the advantages that: the cabinets are oppositely jacked, relative jacking paths can be reduced when the cabinets are jacked, and the jacking directions are easily controlled, thereby effectively improving the jacking precision; a railway reinforcing system is segmented for reinforcement, thereby reducing the railway impact period; the intermediate relaying chamber is arranged, so that the jacking precision of the cabinets can be ensured and slightly adjusted through the intermediate relaying chamber in the jacking processes of the cabinets.

Description

The asymmetric construction method of overlength casing of Line for Passenger Transportation is worn under a kind of
Technical field
The invention belongs to rail facility technical field of construction, particularly relate to a kind of under wear the asymmetric construction method of overlength casing of Line for Passenger Transportation.
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 builds frame bridge under existing railway, alleviates with this traffic congestion phenomenon caused because rail track passes in city.In addition, when some frame bridge or because service life is long or when cannot meet the requirement of traffic because inner width is too small, displace old frame bridge with regard to needing with new frame bridge.Method of replacing conventional is at present jacking, and this method is that limit removal of old framework bridge and the soil body lateral dominance jack dug out below this bridge will form joint or the jacking below existing railway from existing railway one or both sides of more piece casing of frame bridge main body.But when frame bridge is positioned at the below of field of such as standing, because in field, station, railway strand is too much, aspect ratio therefore must be adopted comparatively large and the overlength casing be made up of more piece, in this case, difficulty of construction coefficient can be multiplied.As the one-sided jacking construction method according to routine, can following point be there is:
1, because casing aspect ratio is large, base plate thickness is little, and cloth pick difficulty is large.
2, casing is from great, cannot provide enough top power.
If 3 establish multiple relay well, easily there is the large problem of deviation, therefore cannot ensure jacking precision.
4, track strengthening area is large, large on train operation impact.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide a kind of under wear the asymmetric construction method of overlength casing of Line for Passenger Transportation.
In order to achieve the above object, the asymmetric construction method of overlength casing of wearing Line for Passenger Transportation under provided by the invention comprises the following step carried out in order:
1, first a foundation ditch is excavated respectively in the multiply railway both sides at new frame bridge place to be placed, then a prefabricated casing in each foundation ditch; And each casing divides two joint modes prefabricated, and two internodes arrange relay well;
2, from the dual-side shoveling lateral dominance of multiply railway with two, jack pair top casing to design attitude, and after being put in place by two box-body jackings, corresponding top railway is reinforced;
3, the predetermined closed position before box-body jacking after two box-body jackings does supporting and protection structure; then after two box-body jackings are in place, determine by survey crew the relative position closing up two casings; and the foundation ditch of closure segment is excavated according to the position of casing; carry out closure segment substructure construction afterwards; and make closure segment substructure and two casings carry out along connecing according to lower box locations of structures; then closure segment Superstructure Construction is carried out according to substructure position; finally carry out the construction of closure segment fish tail and waterproof layer, make closure segment in cast-in-place mode thus.
The front end base plate of described casing is provided with the fore slope of 1: 10.
The length of two described casings is equal or not etc., and each casing arranges the wide settlement joint of 2cm between two joints.
The length of described closure segment is less than the length of casing.
The advantage of the asymmetric construction method of Line for Passenger Transportation overlength casing is worn under provided by the invention:
1, casing is to top construction, and can reduce during box-body jacking relatively to push up journey, jacking direction easily controls, and can effectively improve jacking precision;
2, railway reinforced system adopts segmentation to reinforce, and reduces to affect the cycle to railway;
3, a relay well is set, box-body jacking precision can be ensured, relay well trickle adjustment box-body jacking precision can be passed through in box-body jacking process again.
Accompanying drawing explanation
Fig. 1-Fig. 2 for utilize provided by the invention under wear job site schematic diagram when the asymmetric construction method of Line for Passenger Transportation overlength casing is constructed.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the asymmetric construction method of overlength casing of wearing Line for Passenger Transportation under provided by the invention is described in detail.
As shown in Fig. 1-Fig. 2, the asymmetric construction method of overlength casing of wearing Line for Passenger Transportation under provided by the invention comprises the following step carried out in order:
1, first a foundation ditch 1 is excavated respectively in multiply railway 3 both sides at new frame bridge place to be placed, then a prefabricated casing 2 in each foundation ditch 1; The length of two casings 2 is equal or not etc., railway 3 width that concrete length need be crossed over according to this casing 2 and determine, and on each casing 2 two save between the wide settlement joint of 2cm is set; Each casing 2 point two joint mode is prefabricated, and two internodes arrange relay well, reach overall jacking thus, and merogenesis opens the object of pick;
2, from dual-side shoveling lateral dominance two, jack pair top casing 2 to the design attitude of multiply railway 3, the front end base plate of casing 2 is provided with the fore slope of 1: 10, during jacking, the both sides basil all adopts and eats a cubic metre of earth formula jacking, so that soil fully can be eaten in fore slope, thus reduce to conduct oneself with dignity excessive and bundle head phenomenon that is that produce because of casing 2; In jack-in process, open by every side the trend that pick quantity carrys out fine adjustments casing 2, and after the jacking of two casings 2 being put in place, corresponding top railway 3 is reinforced, and can reduce reinforcing scope like this;
3, predetermined closed position before casing 2 jacking after the jacking of two casings 2 does supporting and protection structure, then after the jacking of two casings 2 is in place, determine by survey crew the relative position closing up two casings 2, and the foundation ditch of closure segment 4 is excavated according to the position of casing 2, carry out closure segment 4 substructure construction afterwards, and make closure segment 4 substructure and two casings 2 carry out along connecing according to casing 2 substructure position, then closure segment 4 Superstructure Construction is carried out according to substructure position, finally carry out the construction of closure segment 4 fish tail and waterproof layer, closure segment 4 is made thus in cast-in-place mode.The length of closure segment 4 is less than the length of casing 2, is 4m in the present embodiment, being convenient to two deviations to the casing 2 on top like this along connecing, completing whole work progress thus.

Claims (4)

1. wear the asymmetric construction method of overlength casing of Line for Passenger Transportation under, it is characterized in that: it comprises the following step carried out in order:
1, first a foundation ditch (1) is excavated respectively in multiply railway (3) both sides at new frame bridge place to be placed, then a prefabricated casing (2) in each foundation ditch (1); And each casing (2) point two joint modes are prefabricated, and two internodes arrange relay well;
2, from the dual-side shoveling lateral dominance of multiply railway (3) with two, jack pair top casing (2) to design attitude, and after the jacking of two casings (2) being put in place, corresponding top railway (3) is reinforced;
3, predetermined closed position before casing (2) jacking after the jacking of two casings (2) does supporting and protection structure, then after the jacking of two casings (2) is in place, determine by survey crew the relative position closing up two casings (2), and the foundation ditch of closure segment (4) is excavated according to the position of casing (2), carry out closure segment (4) substructure construction afterwards, and make closure segment (4) substructure and two casings (2) carry out along connecing according to casing (2) substructure position, then closure segment (4) Superstructure Construction is carried out according to substructure position, finally carry out the construction of closure segment (4) fish tail and waterproof layer, closure segment (4) is made thus in cast-in-place mode.
2. wear the asymmetric construction method of overlength casing of Line for Passenger Transportation under according to claim 1, it is characterized in that: the front end base plate of described casing (2) is provided with the fore slope of 1: 10.
3. under according to claim 1, wear the asymmetric construction method of overlength casing of Line for Passenger Transportation, it is characterized in that: the length of two described casings (2) is equal or not etc., and arranges the wide settlement joint of 2cm between upper two joints of each casing (2).
4. wear the asymmetric construction method of overlength casing of Line for Passenger Transportation under according to claim 1, it is characterized in that: the length of described closure segment (4) is less than the length of casing (2).
CN201510161239.1A 2015-04-08 2015-04-08 Asymmetric constructing method of over-length cabinet with passenger railway lines running underneath Pending CN104746532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510161239.1A CN104746532A (en) 2015-04-08 2015-04-08 Asymmetric constructing method of over-length cabinet with passenger railway lines running underneath

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510161239.1A CN104746532A (en) 2015-04-08 2015-04-08 Asymmetric constructing method of over-length cabinet with passenger railway lines running underneath

Publications (1)

Publication Number Publication Date
CN104746532A true CN104746532A (en) 2015-07-01

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Country Status (1)

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CN (1) CN104746532A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101963061A (en) * 2010-10-19 2011-02-02 浙江省建工集团有限责任公司 Construction method for underground box culvert of existing railway line
JP4956332B2 (en) * 2007-08-28 2012-06-20 盟和工業株式会社 Bridge girder replacement method
CN103362073A (en) * 2013-08-08 2013-10-23 中铁六局集团天津铁路建设有限公司 Method for pushing 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
CN103866694A (en) * 2014-03-18 2014-06-18 中铁二十二局集团第一工程有限公司 Deep water silt layer geological large-span multi-line reinforcing system and jacking culvert construction method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4956332B2 (en) * 2007-08-28 2012-06-20 盟和工業株式会社 Bridge girder replacement method
CN101963061A (en) * 2010-10-19 2011-02-02 浙江省建工集团有限责任公司 Construction method for underground box culvert of existing railway line
CN103362073A (en) * 2013-08-08 2013-10-23 中铁六局集团天津铁路建设有限公司 Method for pushing 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
CN103866694A (en) * 2014-03-18 2014-06-18 中铁二十二局集团第一工程有限公司 Deep water silt layer geological large-span multi-line reinforcing system and jacking culvert construction method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨伟新: "机场滑行道下顶进长大箱涵关键技术研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 *

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Application publication date: 20150701