CN102505626A - Temporary bridge for trunk railway - Google Patents
Temporary bridge for trunk railway Download PDFInfo
- Publication number
- CN102505626A CN102505626A CN2011103544901A CN201110354490A CN102505626A CN 102505626 A CN102505626 A CN 102505626A CN 2011103544901 A CN2011103544901 A CN 2011103544901A CN 201110354490 A CN201110354490 A CN 201110354490A CN 102505626 A CN102505626 A CN 102505626A
- Authority
- CN
- China
- Prior art keywords
- lattice column
- bridge
- railway
- suspension bridge
- deep foundation
- 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
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of railway bridge engineering and particularly relates to a temporary bridge for a trunk railway to solve the construction problem of crossing the railway under a large-span deep foundation pit. The temporary bridge for the trunk railway is of a steel and concrete combined structure and crosses the top part of the deep foundation pit to be excavated; a temporary bridge foundation is a bored cast-in-place pile; the pile top of the bored cast-in-place pile is positioned at the bottom part of the deep foundation pit; a pier body of the temporary bridge is a lattice column inserted into the bored cast-in-place pile; adjacent lattice columns are connected with longitudinal and transverse bridgings while the foundation pit is excavated in the excavation process; all nodes of the lattice columns are connected into an integral structure through a reinforced concrete ring beam, and the top parts of the lattice columns are connected through the reinforced concrete ring beam and are cast into an integral structure with a bridge deck structure. The temporary bridge has the beneficial effect that the engineering demands that the newly-built project has to intersect within the line scope of a railway in operation are better satisfied, so that and the smooth and safe excavation of the deep foundation pit ensured, the construction period is shortened, but also the safety that the construction does not affect the railway in operation is ensured.
Description
Technical field
The invention belongs to railway bridges and culverts field of engineering technology, be specially a kind of main line railway suspension bridge.
Background technology
In railway project for renovation and expansion construction field, meet large scale structure underpass road such as passage and construct when influenced, generally can take constructure scheme stage by stage; After treating that new construction and ew line are accomplished, the clawback ew line is open-minded, construction residue agent structure; Because this scheme is a front and back construction relation; Opened ew line and stagnate approximately, construction period is longer, or prolongs at double.Receive factor affecting such as landform, landforms or surrounding enviroment are special if meet, can't relocate or when realizing phase in, the new construction construction then can only intersect with the railway in operation circuit to be carried out.
The job practices of conventional aerial railway circuit mainly is a just girder construction process of D, and is through establishing buttress supporting girder steel that circuit is built on stilts, thereby realizes constructions such as soil excavation, culvert jacking under the circuit; This method is simple in structure, and short construction period has certain superiority; But its maintenance cost is high, and only satisfies single line, (aperture 5～8m is about height 5m) bridges and culverts construction on a small scale; After suspension bridge built up, train was not more than 45km/h through rate request.
And for the large-span deep foundation pit construction, existing construction technology is irrealizable.For example a certain engineering; Owing to be located in bustling down town, be again the railway terminal transformation, the place is narrow and small; Can not existing line be relocated outside the engineering construction scope; Also will construct under the rail track deep foundation ditch of large-scale station and subway transfer, and 100 meters of the spans of foundation ditch, the degree of depth reach 24 meters, and security risk is big.Domestic existing construction technology can't solve this engine request at all.
Summary of the invention
Goal of the invention of the present invention:, a kind of novel main line railway suspension bridge is provided in order to solve the construction of rail wear under the large-span deep foundation pit.
The present invention adopts following technical scheme to realize: the main line railway suspension bridge is characterized in that:
1), suspension bridge is steel, concrete combined structure, crosses over the deep foundation ditch top that is about to excavation, suspension bridge be that suspension bridge is basic from bottom to top, suspension bridge pier shaft and bridge floor,
2), the suspension bridge basis is bored pile, the stake top of bored pile is positioned at the deep foundation ditch bottom,
3), the suspension bridge pier shaft is for inserting the lattice column in the bored pile stake; The spacing of vertical adjacent lattice column is 3.8 ~ 6m; Horizontal adjacent lattice column spacing is 4 ~ 5m, and adjacent lattice column connects the vertical, horizontal bridging while excavating in Excavation Process, and each node of lattice column is got in touch into overall structure through reinforced concrete circle beam; The lattice column top is built through the reinforced concrete circle beam connection and with bridge deck structure and is overall structure
4), bridge floor is the RC Continuous rigid structures.
Another preferred version of the present invention: each node collar tie beam of lattice column is provided with the support system that utilizes deep foundation ditch.
Another preferred version of the present invention: the effective length 60～80.3m of drilled pile, lattice column inserts drilled pile 6～8m, and lattice column stretches into 60 ~ 85cm in the bridge deck structure.
Beneficial effect of the present invention: when the horizontal bridging of connection lengthwise; Also promptly in work progress; Just can satisfy the driving condition of passenger vehicle 80km/h, lorry 45km/h; The present invention can satisfy the driving condition of passenger vehicle 80km/h, lorry 45km/h equally after construction is accomplished, so well below the just influence of beam to driving a vehicle of conventional D type.In existing line station yard modification process; Built on stilts and the transition railway in operation through newly-built temporary railway bridge structure of the present invention; Realized the target that rail wear once excavates under the large-scale foundation ditch, solved new construction well and must in the rail track scope of operation, intersect the engineering demand that carries out, promptly guaranteed deep pit digging smoothly, safety carries out; Shortened construction period, guaranteed that again construction does not influence the safety of railway in operation.
Description of drawings
Fig. 1 is temporary railway bridge and deep foundation ditch sketch map
Fig. 2 is a temporary railway bridge pilework sketch map
Fig. 3 is that horizontal bridging is arranged sketch map
Fig. 4 is that vertical bridging is arranged sketch map
Fig. 5 suspension bridge vertical section sketch map
Among the figure: 1-pours into drilled pile, the 2-lattice column, and the 3-bridge deck, the 4-bridging, the 5-collar tie beam, the 6-deep foundation ditch, the 7-foundation ditch supports, L-foundation ditch span, H-foundation depth.
The specific embodiment
Be described further in conjunction with the accompanying drawing specific embodiments of the invention.
The main line railway suspension bridge is characterized in that:
1), suspension bridge is steel, concrete combined structure, crosses over the deep foundation ditch top that is about to excavation, suspension bridge be that suspension bridge is basic from bottom to top, suspension bridge pier shaft and bridge floor,
2), the suspension bridge basis is bored pile, the stake top of bored pile is positioned at the deep foundation ditch bottom,
3), the suspension bridge pier shaft is for inserting the lattice column in the bored pile stake; The spacing of vertical adjacent lattice column is 3.8 ~ 6m; Horizontal adjacent lattice column spacing is 4 ~ 5m, and adjacent lattice column connects the vertical, horizontal bridging while excavating in Excavation Process, and each node of lattice column is got in touch into overall structure through reinforced concrete circle beam; The lattice column top is built through the reinforced concrete circle beam connection and with bridge deck structure and is overall structure
4), bridge floor is the RC Continuous rigid structures.
Below illustrate, existing iron wire road keeps operation, the deep foundation ditch of large-scale station and the subway transfer of will constructing under the rail track, 100 meters of foundation ditch spans, 24 meters of the degree of depth.Construction sequence is following:
1, construction drill pile foundation at first, stake footpath 1m ~ 1.5m, the long 60 ~ 80.3m of stake, the stake heights of roofs is apart from ground 21.4m.
2, the pier shaft lattice column of secondly constructing.Lattice column is the four limbs angle steel, and the angle steel model is Q345B4L200*200*20mm, connects the 550*550mm lattice column with batten plate, and the spacing of vertical adjacent lattice column is 3.8 ~ 6m, horizontal totally 3 lattice columns, and spacing 4 ~ 5m, drilled pile pile body 6m is imbedded in the lattice column bottom.
3, after the lattice column construction is accomplished, the soil body in each 2.5m, the following 25m scope of bridge floor about suspension bridge is reinforced with cement mixing pile, remedied the lattice column pier shaft and do not carry out executing the problem of insufficient rigidity before of doing to bridging connection and node collar tie beam in length and breadth.
4, when the excavation progress satisfies supporting condition, the horizontal bridging of connection lengthwise in time is installed on adjacent lattice column, laterally press 3m together, vertically press 6m together; Adopt in the point of skylight the punching otic placode to weld with lattice column earlier, realize bridging and otic placode bolt, open bridging and otic placode full weld behind the circuit at bridging node place.Vertically after the bridging installation, build reinforced concrete circle beam in good time and connect lattice column.The node collar tie beam setting of lattice column makes full use of the support system of deep foundation ditch, and is economical and practical, reduce expenses.
5, construction three roads are unified into the continuous overall structure of steel-mixed connection to reinforced concrete circle beam with lattice column in length and breadth on the lattice column; Construct in length and breadth to girder (also being collar tie beam) in corresponding position, lattice column top, vertical girder is totally 3 roads, and girder section is of a size of 1000 * 1000mm; Vertically construct between the girder secondary beam, totally 2 roads; The sectional dimension of secondary beam is 600 * 800mm, bridge floor both sides constructions side bar, totally 2 roads, and the sectional dimension of side bar is 350 * 600.
6, bridge floor is the rc-frame-beam board combining structure, bridge deck thickness 350mm, width 12.9m.The plate top is identical with the back absolute altitude, concrete grade C40.
7, after the temporary railway bridge structure construction was accomplished and reached design strength, it was open-minded through suspension bridge to dial and connect rail track.
8, be excavated to the foundation ditch bottom, in time build base arrangement, closed base also supports space enclosing structure, treats to dial and connect after agent structure is accomplished and opens new line, removes temporary railway bridge.
Claims (3)
1. main line railway suspension bridge is characterized in that:
1), suspension bridge is steel, concrete combined structure, crosses over the deep foundation ditch top that is about to excavation, suspension bridge be that suspension bridge is basic from bottom to top, suspension bridge pier shaft and bridge floor,
2), the suspension bridge basis is bored pile, the stake top of bored pile is positioned at the deep foundation ditch bottom,
3), the suspension bridge pier shaft is for inserting the lattice column in the bored pile stake; The spacing of vertical adjacent lattice column is 3.8 ~ 6m; Horizontal adjacent lattice column spacing is 4 ~ 5m, and adjacent lattice column connects the vertical, horizontal bridging while excavating in Excavation Process, and each node of lattice column is got in touch into overall structure through reinforced concrete circle beam; The lattice column top is built through the reinforced concrete circle beam connection and with bridge deck structure and is overall structure
4), bridge floor is the RC Continuous rigid structures.
2. main line railway suspension bridge according to claim 1 is characterized in that each node collar tie beam of lattice column is provided with the support system that utilizes deep foundation ditch.
3. main line railway suspension bridge according to claim 1 and 2 is characterized in that the effective length 60～80.3m of drilled pile, and lattice column inserts drilled pile 6～8m, and lattice column stretches into 60 ~ 85cm in the bridge deck structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103544901A CN102505626A (en) | 2011-11-10 | 2011-11-10 | Temporary bridge for trunk railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103544901A CN102505626A (en) | 2011-11-10 | 2011-11-10 | Temporary bridge for trunk railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102505626A true CN102505626A (en) | 2012-06-20 |
Family
ID=46217755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103544901A Pending CN102505626A (en) | 2011-11-10 | 2011-11-10 | Temporary bridge for trunk railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102505626A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775357A (en) * | 2015-04-22 | 2015-07-15 | 兰州交通大学 | Framework, truss and high-strength spring combined bridge-road transition section structure separated from bridge abutment |
| CN110656581A (en) * | 2019-09-19 | 2020-01-07 | 广州机施建设集团有限公司 | Temporary bridge construction process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060058600A (en) * | 2004-11-25 | 2006-05-30 | 유성근 | Connection detail and its construction method between abutment and steel girder in integral abutment bridge |
| CN201459610U (en) * | 2009-08-05 | 2010-05-12 | 宝鸡中铁宝桥天元实业发展有限公司 | D-type construction temporary beam of improved railway |
| CN101831873A (en) * | 2010-05-25 | 2010-09-15 | 北京城建设计研究总院有限责任公司 | Temporary bridge covered excavation method for constructing box culvert below traffic ground line of operating track |
| CN201648943U (en) * | 2010-04-09 | 2010-11-24 | 中铁十一局集团第五工程有限公司 | Temporary steel bridge supporting structure |
| CN102154984A (en) * | 2011-01-24 | 2011-08-17 | 中国土木工程集团有限公司 | Method for constructing overpass gate-type pier spanning over electrified railway |
-
2011
- 2011-11-10 CN CN2011103544901A patent/CN102505626A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060058600A (en) * | 2004-11-25 | 2006-05-30 | 유성근 | Connection detail and its construction method between abutment and steel girder in integral abutment bridge |
| CN201459610U (en) * | 2009-08-05 | 2010-05-12 | 宝鸡中铁宝桥天元实业发展有限公司 | D-type construction temporary beam of improved railway |
| CN201648943U (en) * | 2010-04-09 | 2010-11-24 | 中铁十一局集团第五工程有限公司 | Temporary steel bridge supporting structure |
| CN101831873A (en) * | 2010-05-25 | 2010-09-15 | 北京城建设计研究总院有限责任公司 | Temporary bridge covered excavation method for constructing box culvert below traffic ground line of operating track |
| CN102154984A (en) * | 2011-01-24 | 2011-08-17 | 中国土木工程集团有限公司 | Method for constructing overpass gate-type pier spanning over electrified railway |
Non-Patent Citations (1)
| Title |
|---|
| 王志艳等: "临时铁路便桥的动力特性分析", 《中国铁路》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775357A (en) * | 2015-04-22 | 2015-07-15 | 兰州交通大学 | Framework, truss and high-strength spring combined bridge-road transition section structure separated from bridge abutment |
| CN110656581A (en) * | 2019-09-19 | 2020-01-07 | 广州机施建设集团有限公司 | Temporary bridge construction process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101440708B (en) | PBA shallow buried underground excavating close range large section three-hole separated island type structure construction method | |
| CN108868778B (en) | Non-excavation construction method for large underground structure | |
| CN101831873B (en) | Temporary bridge covered excavation method for constructing box culvert below traffic ground line of operating track | |
| CN102182325B (en) | Storey adding method for existing building basement with frame structure and independent foundation | |
| JP7394252B1 (en) | Protruding type wind duct structure perpendicular to the vertical direction and construction method at deep subway station | |
| CN108487252A (en) | A kind of deep foundation pit open cutting is suitable to make construction method | |
| CN101768924B (en) | Overhead method for existing railway in area with soft foundation and high water level | |
| CN105064397A (en) | Open excavation construction method for expanding excavation of station on metro interzone shield tunnel foundation | |
| CN105201516B (en) | A kind of main structure of subway station and its tetrad arch PBA excavating construction methods | |
| CN101761068A (en) | Box-raft pressure-bearing type foundation underpinning and construction reinforcing method for tunnel across pile foundation of bridge above river | |
| CN105003272A (en) | Reversed construction method for expanding and excavating stations on sectional shield tunnel foundations of subways | |
| CN105089670B (en) | Construction method for enlarging and excavating subway station on basis of parallel interval shield tunnel | |
| CN105736001A (en) | Construction method for building subway station through precast parts | |
| CN207047613U (en) | A kind of railway roadbed changeover portion support meanss and railway roadbed changeover portion support system | |
| CN102505697A (en) | Method for excavating deep foundation pits under temporary bridge of main line railway | |
| KR100510092B1 (en) | A one-piece type arch-shaped structure with the precast concrete pannel and the steel frame under the earth, and method for manufacturing it | |
| CN205036380U (en) | Block of four encircles PBA and secretly digs subway station major structure | |
| CN205893922U (en) | T roof beam precasting yard that sets up on having longitudinal gradient's road bed | |
| CN209669718U (en) | A kind of existing hangar tunnel combination stone cut off wall structure of rockfall protection | |
| CN107447598A (en) | A kind of building method of railway roadbed changeover portion support meanss and railway roadbed changeover portion support system | |
| CN112177042A (en) | Rail transit station construction method without affecting ground traffic | |
| CN103967052A (en) | Method for protecting height difference soil bodies of bases of new frame structure bridge and old frame structure bridge | |
| CN102505626A (en) | Temporary bridge for trunk railway | |
| CN103866788B (en) | A kind of method of pillar abutment scarp slope barricadeization transformation | |
| CN209704560U (en) | Build the scaffolding structure that an ultra shallow buries Large Underground space |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120620 |