CN1676753A - Self-anchored stayed cable-suspension combined bridge - Google Patents
Self-anchored stayed cable-suspension combined bridge Download PDFInfo
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- CN1676753A CN1676753A CN 200510046298 CN200510046298A CN1676753A CN 1676753 A CN1676753 A CN 1676753A CN 200510046298 CN200510046298 CN 200510046298 CN 200510046298 A CN200510046298 A CN 200510046298A CN 1676753 A CN1676753 A CN 1676753A
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Abstract
This invention relates to the design of big span bridge in the bridge construction. It combines the merits of cable stayed bridge and suspension bridge, and by using self-anchored architecture, it comes out to be a kind of design program of big span bridge. During the process of construction, when the kingpost of the cable stayed bridge has been consolidated, we fix the main cable's temporary anchor onto the steel frame made up of several abutment pier and lift the girder of the steel box in the middle. After the main girder is closed, the architecture changing should be finished to form permanent self-anchored architecture, and then adjust the strength of the cables of the whole bridge. This invention has great effects and merits of solving the problem of the design and construction of big span bridge. It also fully uses the material, saving big position holdings and decreasing the cost of the project. At the same time, the working time is reduced, decreasing the risk during the working process.
Description
Technical field
The invention belongs to construction engineering technical field, relate to the design of the bridge in the bridge engineering, specially refer to the design of long-span bridge beam.
Background technology
At present, in the design of long-span bridge beam, adopt three kinds of bridge types usually:
A kind of is the cable stayed bridge scheme, and the cable stayed bridge that has built up largest span now is the more Luo Daqiao of Japan, and it is striden the footpath and reaches 890m.When but the cantilever span during CONSTRUCTION OF CABLE-STAYED BRIDGE reaches the 500m left and right sides, its aerodynamic stability is worrying really, its axial horizontal pressure force can increase sharply along with the increase in cantilever span footpath simultaneously, causes the girder root can produce the phenomenon of lateral deflection unstability at nearly tower place.
Another kind of bridge type scheme is the suspension bridge scheme, and the suspension bridge that has built up largest span now is the alum strait Bridge of Japan, and main span reaches 1991m.But main rope of suspension bridge and girder steel using amount are bigger, have increased construction costs, and large-span suspension bridge is ground anchor type simultaneously, need huge anchorage, and its volume increases sharply along with the increase of striding the footpath.It is reported that the suspension bridge of main span 1000m will exceed 16.7% than the cable stayed bridge cost of striding the footpath on an equal basis.In addition, aerodynamic stability also is that suspension bridge is to the restraining factors of striding the footpath development greatly.
Also having a kind of is exactly that ground anchor type tiltedly draws-suspension cable cooperation bridge, the domestic bridge-Wujiang River, the Guizhou bridge that builds up the first in the world seat the type, and main span has only 288m.Domestic and international many bridge spanning the seas such as lonely foreign bridge, Bering bridge have all proposed this scheme, and this bridge type mainly rests on the schematic design phase at present.The scheme that is proposed is the earth anchor system, needs huge earth anchor, and difficulty of construction is big, the construction costs height.
Summary of the invention
The objective of the invention is to propose a kind of long-span bridge type design scheme.
Technical solution of the present invention is, construction cable stayed bridge part hangs main push-towing rope more earlier, temporarily with the main push-towing rope anchor on the framework that a plurality of abutment piers form, lift the steel girder of suspension bridge part then, finish of the conversion of earth anchor system after the closure to self-anchoring system.
Concrete steps are:
1. begin free cantilever erection cable stayed bridge concrete girder after Sarasota and lateral opening pier are carried out;
2. free cantilever erection hangs main push-towing rope after lateral opening finishing, and its two ends are anchored at respectively on the anchor block of concrete beam outer end, and anchor block is pulled on the formed framework of a plurality of pier studs of access bridge with interim anchor cable;
3. with each section of cable crane lifting span centre steel girder;
4. after the closure, remove interim anchor cable, the complete anchor of main push-towing rope becomes the self-anchoring type main push-towing rope at the girder two ends in batches, finishes by interim earth anchor to the system conversion from anchor;
5. finish deck paving, railing construction, and carry out the Suo Li adjustment of full-bridge, Cheng Qiao.
In view of this, two kinds of systems of cable stayed bridge and suspension bridge exist in work progress separately, and Cheng Qiaohou is cooperation mutually again, and the Cheng Qiaowei self-anchoring system, so this bridge type is named as " self-anchored stayed cable-suspension combined bridge ".
Effect of the present invention and benefit are:
1. the employing self-anchoring system has been saved huge anchorage, has not only reduced cost, and has shortened the duration;
2. the load of cable stayed bridge part is to be delivered to column foot by bridge tower, will this part load not passed to column foot and do not resemble by main push-towing rope in suspension bridge, and this has just reduced the diameter of main push-towing rope, has saved material;
3. the cantilever of cable stayed bridge shortens in the work progress, and Cheng Qiaohou suspension bridge scope also reduces, and therefore the aerodynamic stability after work progress is neutralized into the bridge state has all obtained significant raising, has reduced the risk in the work progress;
4. cable stayed bridge partly shortens, and the axial compression reduction at nearly tower place girder root when guaranteeing girder stability, can reduce the area of concrete girder again, reduces construction costs;
5. adopt concrete girder in the cable stayed bridge section, and the suspension bridge section adopts the steel girder, gives full play to material property, can significantly save cost.
Description of drawings
Fig. 1 is that self-anchoring type tiltedly draws-the interim earth anchor schematic diagram of suspension cable cooperation bridge.
Among the figure: 1 main push-towing rope, 2 girders, 3 suspension rods, 4 suspension cables, 5 king-towers, 6 abutment piers.
Fig. 2 be self-anchoring type tiltedly draw-suspension cable cooperation bridge becomes bridge scheme schematic diagram.
Among the figure: 1 main push-towing rope, 2 girders, 3 suspension rods, 4 suspension cables, 5 king-towers, 7 anchor blocks.
The specific embodiment
Below in conjunction with technical scheme and accompanying drawing, be described in detail most preferred embodiment of the present invention.
After the cable-stayed bridge main-beam assembly unit is in place, hang main push-towing rope, the main push-towing rope anchor on concrete beam-ends anchor block, and by interim anchor cable anchor on the frame construction that a plurality of pier stud of access bridge is formed.Steel case beam in the middle of the lifting is treated to finish the system conversion after the girder closure, forms permanent self-anchoring system, adjusts full-bridge Suo Li then.
Girder section: cable stayed bridge part girder adopts the concrete box beam section, and suspension bridge partly adopts steel case beam section.
Material behavior: cable stayed bridge part girder and wet seam adopt the C50 concrete, and the C30 concrete is adopted in the pier stake; Cable bridge part girder adopts the Q345 steel.
Class of loading: highway-I level.
Suspension cable and main push-towing rope material behavior: suspension cable and main push-towing rope adopt and extrude sheath twisting type drag-line.
Claims (1)
1. self-anchoring type tiltedly draws-suspension cable cooperation bridge, it is characterized in that: the cable stayed bridge part of constructing earlier, hang main push-towing rope again, temporarily with the main push-towing rope anchor on the frame construction that a plurality of abutment piers form, lift the steel girder of suspension bridge part then, treat to finish of the conversion of earth anchor system after the girder closure, form permanent self-anchoring system to self-anchoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046298 CN1676753A (en) | 2005-04-20 | 2005-04-20 | Self-anchored stayed cable-suspension combined bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046298 CN1676753A (en) | 2005-04-20 | 2005-04-20 | Self-anchored stayed cable-suspension combined bridge |
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| Publication Number | Publication Date |
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| CN1676753A true CN1676753A (en) | 2005-10-05 |
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| CN 200510046298 Pending CN1676753A (en) | 2005-04-20 | 2005-04-20 | Self-anchored stayed cable-suspension combined bridge |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094383A (en) * | 2010-12-21 | 2011-06-15 | 中铁大桥勘测设计院有限公司 | Suspended and cable-stayed combined structural bridge |
| CN102121234A (en) * | 2011-04-23 | 2011-07-13 | 中铁三局集团有限公司 | Quick construction method of two-tower five-span steel truss girder cable-stayed bridge |
| CN101838969B (en) * | 2010-02-09 | 2012-01-18 | 长沙理工大学 | Method for stretching single-tower double-span self-anchored suspension bridge sling of side-span splay cable knot in supportless way |
| CN102839598A (en) * | 2012-09-13 | 2012-12-26 | 中铁大桥勘测设计院集团有限公司 | Mixed type cable-supported bridge |
| CN103850172A (en) * | 2014-02-17 | 2014-06-11 | 中交公路规划设计院有限公司 | Composite beam stayed cable-suspension cable cooperation bridge |
| CN104264577A (en) * | 2014-10-21 | 2015-01-07 | 天津市市政工程设计研究院 | Self-anchoring suspension cable and stay cable cooperative system bridge with girder having variable cross-section |
| CN104264579A (en) * | 2014-10-21 | 2015-01-07 | 天津市市政工程设计研究院 | Steel self-anchored suspension cable-cable-stayed cooperative system bridge |
| CN104264578A (en) * | 2014-10-21 | 2015-01-07 | 天津市市政工程设计研究院 | Steel-concrete combining bridge of self-anchored suspension cable-cable-stayed cooperative system |
| CN105421236A (en) * | 2015-10-29 | 2016-03-23 | 中交第二航务工程局有限公司 | Closing method for cable-stayed and suspension composite bridge |
-
2005
- 2005-04-20 CN CN 200510046298 patent/CN1676753A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838969B (en) * | 2010-02-09 | 2012-01-18 | 长沙理工大学 | Method for stretching single-tower double-span self-anchored suspension bridge sling of side-span splay cable knot in supportless way |
| CN102094383A (en) * | 2010-12-21 | 2011-06-15 | 中铁大桥勘测设计院有限公司 | Suspended and cable-stayed combined structural bridge |
| CN102121234A (en) * | 2011-04-23 | 2011-07-13 | 中铁三局集团有限公司 | Quick construction method of two-tower five-span steel truss girder cable-stayed bridge |
| CN102121234B (en) * | 2011-04-23 | 2012-04-04 | 中铁三局集团有限公司 | Quick construction method of two-tower five-span steel truss girder cable-stayed bridge |
| CN102839598A (en) * | 2012-09-13 | 2012-12-26 | 中铁大桥勘测设计院集团有限公司 | Mixed type cable-supported bridge |
| CN103850172A (en) * | 2014-02-17 | 2014-06-11 | 中交公路规划设计院有限公司 | Composite beam stayed cable-suspension cable cooperation bridge |
| CN103850172B (en) * | 2014-02-17 | 2016-01-20 | 中交公路规划设计院有限公司 | A kind of hybrid beam oblique pull-suspension cable cooperation bridge |
| CN104264577A (en) * | 2014-10-21 | 2015-01-07 | 天津市市政工程设计研究院 | Self-anchoring suspension cable and stay cable cooperative system bridge with girder having variable cross-section |
| CN104264579A (en) * | 2014-10-21 | 2015-01-07 | 天津市市政工程设计研究院 | Steel self-anchored suspension cable-cable-stayed cooperative system bridge |
| CN104264578A (en) * | 2014-10-21 | 2015-01-07 | 天津市市政工程设计研究院 | Steel-concrete combining bridge of self-anchored suspension cable-cable-stayed cooperative system |
| CN105421236A (en) * | 2015-10-29 | 2016-03-23 | 中交第二航务工程局有限公司 | Closing method for cable-stayed and suspension composite bridge |
| CN105421236B (en) * | 2015-10-29 | 2017-04-12 | 中交第二航务工程局有限公司 | Closing method for cable-stayed and suspension composite bridge |
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