CN202170474U - Support system mixing type combined beam cable-stayed bridge - Google Patents
Support system mixing type combined beam cable-stayed bridge Download PDFInfo
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- CN202170474U CN202170474U CN2011201807363U CN201120180736U CN202170474U CN 202170474 U CN202170474 U CN 202170474U CN 2011201807363 U CN2011201807363 U CN 2011201807363U CN 201120180736 U CN201120180736 U CN 201120180736U CN 202170474 U CN202170474 U CN 202170474U
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Abstract
The utility model relates to a support system mixing type combined beam cable-stayed bridge. Side-span concrete beams are poured on a side pier and an auxiliary pier of the cable-stayed bridge, a stay cable is hung on a middle-span combined beam, large-tonnage spherical steel supports are arranged between two main towers and main tower piers, the middle-span combined beam is constructed between the two large-tonnage spherical steel supports, the concrete beams are adopted as side spans, the combined beam is adopted as a middle span, and the whole bridge adopts a support system. In construction, foundations of the main tower piers, the auxiliary pier and the side pier are firstly constructed, pier bodies of the main tower piers, the auxiliary pier and the side pier are subsequently constructed, the large-tonnage spherical steel supports are hoisted to conduct pier-beam temporary consolidation of the side-span concrete beams and the main tower piers, a pier-beam temporary consolidation device is removed until the middle span is closed, so as to complete the transformation of a structure system. In the utility model, a main tower structure is simple in structure, good in stress and fewer in used materials; side-span main beams and the main towers are synchronously constructed, and middle-span main beams are constructed by a single cantilever method, thus being strong in wind resistance in construction; and the middle span can be constructed synchronously with the main towers, and the whole bridge can be closed soon after the main towers are capped, so that the construction period is short.
Description
Technical field
The utility model belongs to bridge construction engineering field, relates to a kind of cable stayed bridge of new structure form.
Background technology
China builds traffic infrastructure in a large number in recent years; The cable stayed bridge of topography and geomorphologies such as various leap rivers, straits, highway, railway continues to bring out thereupon, requires the design of cable stayed bridge and building technology to constantly bring forth new ideas development to adapt to the needs of various outside construction conditions.
Cable stayed bridge mainly is made up of king-tower, suspension cable, girder.King-tower is mainly reinforced concrete structure, also has the minority bridge to adopt head tower.Suspension cable adopts parallel steel wire suspension cable or steel strand stay cable.Girder mainly adopts prestressed reinforced concrete construction, bondbeam structure and steel box-beam structure, also has the minority bridge to adopt hybrid bondbeam structure and hybrid steel box-beam structure.
The structural system of double pylon cable stayed bridge mainly adopts floating system, also has the minority bridge to adopt fixed system and bearing system.
In original cable stayed bridge form, hybrid bondbeam cable stayed bridge is considerably less, and bearing system cable stayed bridge is also considerably less, and does not also have hybrid bondbeam cable stayed bridge of the two bearing system that combines and job practices thereof.
The actual bridge construction condition that the applicant ran into is following: the bridge location place belongs to the plains region, build a double pylon cable stayed bridge, and its main span needs low-angle to be inclined cross three railway lines, and one of them end bay is in the land, and another end bay will be crossed over innavigable river.
The main span of bridge will be crossed over railway line, for not influencing railways train operation, in stride and should adopt bondbeam.End bay can be set up support fluid concrete beam, the end bay concrete beam of when the construction king-tower, can constructing simultaneously like this.The bridge location place belongs to the plains region, and bridge floor is not high with lower king-post strut, adopts fixed system cannot satisfy force request.Very wide because of girder, and main span is that low-angle is inclined cross railway line, as adopts conventional floating system will strengthen the main span span; Increase cost; And have a main pylon pier need be built up in river course central authorities, river course department is difficult to approval, therefore needs to adopt the hybrid bondbeam cable stayed bridge of bearing system.
Summary of the invention
The purpose of the utility model is to above-mentioned present situation, aim to provide a kind of king-tower structure construction simple, stressed good, materials are few, the wind loading rating of construction period is strong, safety factor is high, the hybrid bondbeam cable stayed bridge of bearing system that the duration is short.
The implementation of the utility model purpose is the hybrid bondbeam cable stayed bridge of bearing system, cast end bay concrete beam on abutment pier, the auxiliary pier; In stride and hang suspension cable on the bondbeam; The spherical steel support of large-tonnage is arranged between two king-towers and the main pylon pier, stride bondbeam in the construction between the spherical steel support of two large-tonnages, end bay adopts concrete beam; In stride the employing bondbeam, full-bridge adopts the bearing system.
The utility model king-tower designs for straight column type, is equipped with parallel rope face, and the king-tower structure construction is simple, and stressed good, materials are few, saves cost, can enrich the king-tower moulding simultaneously; End bay girder and king-tower synchronously construction are accomplished in advance, thus in to stride girder be that single-cantilever is constructed, cable stayed bridge improves in wind resistance and other safety factor of construction period greatly; King-tower designs for straight column type, and suspension cable is parallel rope face, can construct synchronously with king-tower so stride in the main bridge also, and king-tower binds and can reach full-bridge soon and close up, and significantly the reduction of erection time, obtains favorable economic benefit.
Stride the suitable bondbeam that uses in all, end bay is fit to use cast-in-situ concrete beam, and the double pylon cable stayed bridge that lower king-post strut is not high all can adopt the utility model.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 be the A-A of Fig. 1 to cut-away view,
Fig. 3 is that the B-B of Fig. 1 is to cut-away view.
The specific embodiment
With reference to Fig. 1,2,3; Cast end bay concrete beam 2 on the abutment pier 5 of the utility model, the auxiliary pier 6; In stride to hang on the bondbeam 3 to have between suspension cable 4, two king-towers 1 and the main pylon pier 7 in 8 constructions of the large-tonnage spherical steel support of spherical steel support 8, two large-tonnages and stride bondbeam 3.
With reference to Fig. 1,2,3, the concrete steps of construction the utility model are following:
The basis of a, elder generation's construction main pylon pier 7, auxiliary pier 6, abutment pier 5, its pier shaft of constructing subsequently,
B, the spherical steel support 8 of lifting large-tonnage are on main pylon pier, and the end bay concrete beam 2 of cast and the fixed part of king-tower is accomplished the temporary consolidation of main pylon pier and end bay concrete beam,
The construction of king-tower 1 is carried out on c, one side, on one side the remaining end bay concrete beam of segmented cast,
D, carry out on one side the king-tower construction again, in cantilever construction stride bondbeam 3 and hang suspension cable 4 on one side, up to maximum single-cantilever state,
E, stride the closure segment construction in carrying out, remove the temporary consolidation of main pylon pier and end bay concrete beam, accomplish Program for structural Transformation, the main structure construction completion,
F, carry out the construction of bridge floor and king-tower accessory structure, carry out loading test, full-bridge is tentative to be open to traffic.
The king-tower of the utility model is cemented on the end bay concrete beam, through dropping on the main pylon pier in that the spherical steel support of large-tonnage is set at the bottom of the beam.Stride during the end bay concrete beam stretches into a little through be provided with the steel reinforced concrete joint with in stride the fixed as a whole structure of bondbeam.
Claims (1)
1. the hybrid bondbeam cable stayed bridge of bearing system; Cast end bay concrete beam on abutment pier, the auxiliary pier, in stride and hang suspension cable on the bondbeam, it is characterized in that having between two king-towers and the main pylon pier the spherical steel support of large-tonnage; Stride bondbeam in the construction between the spherical steel support of two large-tonnages; End bay adopts concrete beam, in stride the employing bondbeam, full-bridge adopts the bearing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201807363U CN202170474U (en) | 2011-05-31 | 2011-05-31 | Support system mixing type combined beam cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201807363U CN202170474U (en) | 2011-05-31 | 2011-05-31 | Support system mixing type combined beam cable-stayed bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202170474U true CN202170474U (en) | 2012-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201807363U Expired - Lifetime CN202170474U (en) | 2011-05-31 | 2011-05-31 | Support system mixing type combined beam cable-stayed bridge |
Country Status (1)
| Country | Link |
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| CN (1) | CN202170474U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296525A (en) * | 2011-05-31 | 2011-12-28 | 中铁大桥勘测设计院有限公司 | Support system mixed combined beam cable-stayed bridge and construction method thereof |
| CN104652245A (en) * | 2014-11-05 | 2015-05-27 | 上海市政工程设计研究总院（集团）有限公司 | Longitudinal constraint method for cable-stayed bridges |
| CN105672140A (en) * | 2016-03-08 | 2016-06-15 | 中铁港航局集团有限公司 | Erecting, constructing and wind preventing method for long-span cable-stayed bridge steel box girder long cantilever in violent typhoon region |
-
2011
- 2011-05-31 CN CN2011201807363U patent/CN202170474U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296525A (en) * | 2011-05-31 | 2011-12-28 | 中铁大桥勘测设计院有限公司 | Support system mixed combined beam cable-stayed bridge and construction method thereof |
| CN104652245A (en) * | 2014-11-05 | 2015-05-27 | 上海市政工程设计研究总院（集团）有限公司 | Longitudinal constraint method for cable-stayed bridges |
| CN105672140A (en) * | 2016-03-08 | 2016-06-15 | 中铁港航局集团有限公司 | Erecting, constructing and wind preventing method for long-span cable-stayed bridge steel box girder long cantilever in violent typhoon region |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120321 Effective date of abandoning: 20130911 |
|
| RGAV | Abandon patent right to avoid regrant |