CN201343695Y - Long-span continuous steel truss beam for high speed railway bridge - Google Patents
Long-span continuous steel truss beam for high speed railway bridge Download PDFInfo
- Publication number
- CN201343695Y CN201343695Y CNU200920078504XU CN200920078504U CN201343695Y CN 201343695 Y CN201343695 Y CN 201343695Y CN U200920078504X U CNU200920078504X U CN U200920078504XU CN 200920078504 U CN200920078504 U CN 200920078504U CN 201343695 Y CN201343695 Y CN 201343695Y
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- bridge
- steel truss
- continuous steel
- speed railway
- truss beam
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Abstract
The utility model discloses a long-span continuous steel truss beam for a high speed railway bridge, and aims to reduce the building height of the bridge structure and ensure the clearance height under the bridge floor. The continuous steel truss beam comprises an upper chord (10), a lower chord (20), a stiffening chord (30) and a web member (40), through which a trussed structure is formed; the stiffening chord (30) is arranged above and connected with the upper chord (10); and the lower chord (20) is parallel to the bridge floor. The continuous steel truss beam has the beneficial effects that the structural height is greatly reduced, the clearance height under the bridge floor is ensured, the building height of the bridge structure is greatly reduced, the track elevation of a line is reduced, and the height of an approach bridge is reduced, thereby facilitating saving the project investment, and expanding the applicable span and the adaptability of the continuous steel truss beam in the high speed railway.
Description
Technical field
The utility model relates to bridge member, particularly a kind of large-span continuous steel truss girder that is applicable to high-speed railway bridge.
Background technology
Deep propelling along with the great development of China railways great-leap-forward, large quantities of high-speed railways, passenger dedicated railway line put into operation just successively, rail track need be crossed over controlled zones such as great river, great river, urban road, Longspan Bridge must become the development priority direction of railroad bridge, and steel truss girder and combining structure thereof have many characteristics such as rigidity is big, span ability is big, must become one of selection of Longspan Bridge.
Up to the present, the purlin formula structure that the China railways large-span continuous steel truss girder adopts open bridge floors, lower edge to put more energy into, wind up parallel usually all adopts this structure as Wuhan Yangtze River Bridge (main span 128m), Nanjing Yangtze River Bridge (main span 168m) and the long-lived Yangtze Bridge (main span 192m) etc.Open bridge floors has characteristics such as road speed is slow, rigidity is little, be not suitable for the needs of high-speed railway driving. lower edge put more energy into make except that moulding show slightly stiff, its main deficiency is to make the following headroom of bridge floor diminish, influence the traffic capacity of shippping traffic under the bridge or vehicle, therefore, the lower edge bridge construction of putting more energy into is to satisfy higher that bridge grade separation headroom requires that the line position walks, and needs to arrange long bridge thereby cause, bridge pier is higher, makes construction costs that bigger increase be arranged.Based on above reason, be badly in need of at present that a kind of span ability of exploitation is big, building height is low, do not influence navigation safety, beautiful design, be applicable to the steel truss girder of the large span of high-speed railway bridge.
The utility model content
Technical problem to be solved in the utility model provides a kind of high-speed railway bridge large-span continuous steel truss girder, reduces structure height greatly, can guarantee the headway under the bridge floor.
The technical scheme that its technical problem that solves the utility model adopts is: the high-speed railway bridge large-span continuous steel truss girder, by wind up, lower edge, put more energy into string and web member constitute purlin formula structure, it is characterized in that: merge on the described string of putting more energy into is arranged on and winds up and with it, lower edge is parallel with bridge floor, the purlin High variation.
Be to reduce construction costs and strengthen the visual effect of steel truss girder moulding, the described string of putting more energy into is arc shaped with winding up to be integrated.
The beneficial effects of the utility model are, reduce structure height greatly, can guarantee the headway under the bridge floor; Reduce the building height of bridge construction largely, reduced the line track elevation, reduced the access bridge height, thereby helped saving construction investment, enlarged suitable span and the adaptive capacity of continuous steel girder in high-speed railway.
Description of drawings
This manual comprises as next width of cloth accompanying drawing:
Fig. 1 is the structural representation of the utility model high-speed railway bridge large-span continuous steel truss girder.
Parts shown in the figure, toponym and corresponding mark: wind up 10, lower edge 20, the string 30 of putting more energy into, web member 40.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to Fig. 1, high-speed railway bridge large-span continuous steel truss girder of the present utility model, by wind up 10, lower edge 20, put more energy into string 30 and web member 40 constitute purlin formula structure, the described string 30 of putting more energy into is arranged on and winds up on 10 and be attached thereto, lower edge 20 is parallel with bridge floor.For reducing construction costs and strengthening the visual effect of steel truss girder moulding, as a kind of preferred implementation of the present utility model, with reference to Fig. 1, the described string 30 of putting more energy into 10 combines together and is arc shaped with winding up.The employing descending form of train of putting more energy into of winding up, can guarantee the headway under the bridge floor, enlarged suitable span and the adaptive capacity of continuous steel girder in high-speed railway, change traditional single steel truss girder lower edge pattern of putting more energy into, make that the moulding of steel truss girder is graceful more, enriched the practice of domestic steel truss girder.Greatly reduce the building height of bridge construction, reduced the line track elevation, greatly reduce the access bridge height, thereby help saving construction investment.
Some principles of the above the utility model high-speed railway bridge large-span continuous steel truss girder that just explains through diagrams, be not be the utility model to be confined to shown in and in described concrete structure and the scope of application, so every the corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (2)
1. high-speed railway bridge large-span continuous steel truss girder, constitute purlin formula structure by wind up (10), lower edge (20), the string of putting more energy into (30) and web member (40), it is characterized in that: the described string of putting more energy into (30) is arranged on wind up (10) and is attached thereto, and lower edge (20) is parallel with bridge floor.
2. high-speed railway bridge large-span continuous steel truss girder as claimed in claim 1 is characterized in that: the described string of putting more energy into (30) combines together with wind up (10) and is arc shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920078504XU CN201343695Y (en) | 2009-01-06 | 2009-01-06 | Long-span continuous steel truss beam for high speed railway bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920078504XU CN201343695Y (en) | 2009-01-06 | 2009-01-06 | Long-span continuous steel truss beam for high speed railway bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201343695Y true CN201343695Y (en) | 2009-11-11 |
Family
ID=41275276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920078504XU Expired - Lifetime CN201343695Y (en) | 2009-01-06 | 2009-01-06 | Long-span continuous steel truss beam for high speed railway bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201343695Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535327A (en) * | 2012-02-03 | 2012-07-04 | 西安中交土木科技有限公司 | Through prestress steel truss and concrete combined continuous steel structure bridge and construction method thereof |
| CN110107037A (en) * | 2019-05-07 | 2019-08-09 | 中国航空规划设计研究总院有限公司 | A kind of the prestressed steel structure pits rampway structure and its construction method of rotation rising |
-
2009
- 2009-01-06 CN CNU200920078504XU patent/CN201343695Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535327A (en) * | 2012-02-03 | 2012-07-04 | 西安中交土木科技有限公司 | Through prestress steel truss and concrete combined continuous steel structure bridge and construction method thereof |
| CN102535327B (en) * | 2012-02-03 | 2014-06-04 | 西安中交土木科技有限公司 | Through prestress steel truss and concrete combined continuous steel structure bridge and construction method thereof |
| CN110107037A (en) * | 2019-05-07 | 2019-08-09 | 中国航空规划设计研究总院有限公司 | A kind of the prestressed steel structure pits rampway structure and its construction method of rotation rising |
| CN110107037B (en) * | 2019-05-07 | 2024-04-05 | 中国航空规划设计研究总院有限公司 | Rotary-ascending prestress steel structure ramp structure and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091111 |
|
| CX01 | Expiry of patent term |