CN102296525B - Support system mixed combined beam cable-stayed bridge and construction method thereof - Google Patents
Support system mixed combined beam cable-stayed bridge and construction method thereof Download PDFInfo
- Publication number
- CN102296525B CN102296525B CN 201110144706 CN201110144706A CN102296525B CN 102296525 B CN102296525 B CN 102296525B CN 201110144706 CN201110144706 CN 201110144706 CN 201110144706 A CN201110144706 A CN 201110144706A CN 102296525 B CN102296525 B CN 102296525B
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- Prior art keywords
- pier
- construction
- main
- concrete
- bridge
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 239000004567 concrete Substances 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- CWFOCCVIPCEQCK-UHFFFAOYSA-N Chlorfenapyr Chemical compound data:image/svg+xml;base64,<?xml version='1.0' encoding='iso-8859-1'?>
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Abstract
The invention relates to a support system mixed combined beam cable-stayed bridge and a construction method thereof. A side span concrete beam is poured on the side pier and the auxiliary pier of the cable-stayed bridge; a stayed cable hangs on a midspan combined beam; large-tonnage spherical steel supporting seats are arranged between two main towers and main tower piers; the midspan combined beam is constructed between the two large-tonnage spherical steel supporting seats; a concrete beam is adopted in the side span; a combined beam is adopted in the midspan; a supporting seat system is adopted in a full bridge; the main tower pier, the auxiliary pier and the side pier foundation are constructed firstly, and a pier body is constructed secondly in the construction; and the large-tonnagespherical steel supporting seats are lifted; pier beam temporary concretion is performed on the side span concrete beam and the main tower pier until the midspan is folded, namely a pier beam temporary concretion device is dismounted, thus finishing the conversion of a structure system. The main tower structure of the cable-stayed bridge provided by the invention has simple structure, good stressand less materials; the side span main beam and the main tower are constructed synchronously; the midspan main beam is in single cantilever construction; the construction antiwind capacity is strong;the midspan and the main tower can be constructed synchronously; and the main tower can be folded in full bridge before long being capped, and the construction time is short.
Description
Technical field
The invention belongs to bridge construction engineering field, relate to a kind of cable stayed bridge and job practices thereof 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 the hybrid bondbeam cable stayed bridge of the two bearing system that combines and job practices thereof are not also had.
The actual bridge construction condition that the applicant runs into is as follows: the bridge location place belongs to the plains region, build a double pylon cable stayed bridge, and its main span needs low-angle be inclined cross three railway lines, one of them end bay on land, 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 can constructing simultaneously when the construction king-tower 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 objective of the invention is at above-mentioned present situation, aim to provide a kind of king-tower structure simple structure, 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 and job practices thereof that the duration is short.
The implementation of the object of the invention 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 job practices of the hybrid bondbeam cable stayed bridge of bearing system, concrete steps are as follows:
A, elder generation's construction main pylon pier, auxiliary pier, abutment pier basis, its pier shaft of constructing subsequently,
B, the spherical steel support of lifting large-tonnage are on main pylon pier, and the end bay concrete beam of cast and the fixed part of king-tower is finished the temporary consolidation of main pylon pier and end bay concrete beam,
The king-tower construction 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 and hang suspension cable on one side, up to maximum single-cantilever state,
E, stride the closure segment construction in carrying out, remove the temporary consolidation of Dun Liang, finish Program for structural Transformation, main structure construction is finished,
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.
King-tower of the present invention designs for straight column type, is equipped with parallel rope face, king-tower structure simple structure, and stressed good, materials are few, save cost, can enrich the king-tower moulding simultaneously; The synchronous construction of end bay girder and king-tower is finished in advance, thus in to stride girder be single-cantilever construction, cable stayed bridge improves greatly in wind resistance and other safety factor of construction period; 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 present invention.
Description of drawings
Fig. 1 is structural representation of the present invention,
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 abutment pier 5 of the present invention, 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, concrete steps of the present invention are as follows:
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 finished 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, finish Program for structural Transformation, main structure construction is finished,
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.
King-tower of the present invention is cemented on the end bay concrete beam, by 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 by arrange the steel reinforced concrete joint with in stride the fixed as a whole structure of bondbeam.
Claims (2)
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.
2. the job practices of the hybrid bondbeam cable stayed bridge of the described bearing system of claim 1 is characterized in that concrete steps are as follows:
A, elder generation's construction main pylon pier, auxiliary pier, abutment pier basis, its pier shaft of constructing subsequently,
B, the spherical steel support of lifting large-tonnage are on main pylon pier, and the end bay concrete beam of cast and the fixed part of king-tower is finished the temporary consolidation of main pylon pier and end bay concrete beam,
The king-tower construction 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 and hang suspension cable on one side, up to maximum single-cantilever state,
E, stride the closure segment construction in carrying out, remove the temporary consolidation of Dun Liang, finish Program for structural Transformation, main structure construction is finished,
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.
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| CN 201110144706 CN102296525B (en) | 2011-05-31 | 2011-05-31 | Support system mixed combined beam cable-stayed bridge and construction method thereof |
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| CN102829990B (en) * | 2012-09-03 | 2014-08-27 | 天津大学 | Assembled two-tower cable-stayed bridge damage identification test model system |
| CN103614973A (en) * | 2013-12-18 | 2014-03-05 | 广东省长大公路工程有限公司 | Construction method for four-cable-face split steel box girder bridge cantilevers |
| CN103741587A (en) * | 2013-12-25 | 2014-04-23 | 中铁大桥勘测设计院集团有限公司 | Method for elastically restraining main beam displacement of ultrahigh-span cable-stayed bridge |
| CN104562913B (en) * | 2014-12-31 | 2016-04-13 | 西安市政设计研究院有限公司 | The only tower oblique pull of a kind of ribbon shape-just structure composite bridge and construction technology thereof |
| CN104775365B (en) * | 2015-02-28 | 2017-04-05 | 张跃平 | A kind of construction method of cable-stayed bridge |
| 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 |
| CN106049293B (en) * | 2016-07-29 | 2017-10-13 | 德阳天元重工股份有限公司 | Stiffening girder of suspension bridge installation method and used shifting system is swung on navigable river |
| CN106351128B (en) * | 2016-11-28 | 2019-04-09 | 中交路桥华南工程有限公司 | The construction method of cable-stayed bridge end bay girder |
| CN106702910B (en) * | 2016-12-29 | 2018-10-19 | 中交第三航务工程局有限公司 | A kind of main girder construction technique of the double rope face low-pylon cable-stayed bridges of double tower |
| CN106522112B (en) * | 2016-12-30 | 2019-05-14 | 中交路桥华南工程有限公司 | Cable-stayed bridge end bay beam section construction system and its method |
| CN108004924A (en) * | 2017-11-29 | 2018-05-08 | 中交路桥华南工程有限公司 | The folding method of the middle span of the double hybrid steel in rope face of double tower-mixed steel-concrete composite beam cable-stayed bridge |
| CN109137739B (en) * | 2018-09-12 | 2020-02-07 | 长安大学 | Tower anchor-pier anchor combined rapid construction method of self-anchored suspension bridge |
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| JP3728657B2 (en) * | 2000-09-26 | 2005-12-21 | 清水建設株式会社 | Railway bridge replacement method |
| CN101457514B (en) * | 2008-12-31 | 2011-11-23 | 广东省基础工程公司 | Cable stayed bridge construction method |
| CN101476294B (en) * | 2009-01-22 | 2010-10-27 | 四川公路桥梁建设集团有限公司 | Mounting method for underbeam segment of large-stride steel box girder stayed-cable bridge |
| KR100969005B1 (en) * | 2009-11-06 | 2010-07-09 | 동아대학교 산학협력단 | Constructing method of suspension bridge and temporary cable therefor |
| CN101935979A (en) * | 2010-08-10 | 2011-01-05 | 武汉理工大学 | Plain pre-stressed concrete continuous beam bridge |
| CN202170474U (en) * | 2011-05-31 | 2012-03-21 | 中铁大桥勘测设计院有限公司 | Support system mixing type combined beam cable-stayed bridge |
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