CN102182142A - Box girder opening structure at main tower of concrete box girder cable-stayed bridge - Google Patents
Box girder opening structure at main tower of concrete box girder cable-stayed bridge Download PDFInfo
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- CN102182142A CN102182142A CN 201110076574 CN201110076574A CN102182142A CN 102182142 A CN102182142 A CN 102182142A CN 201110076574 CN201110076574 CN 201110076574 CN 201110076574 A CN201110076574 A CN 201110076574A CN 102182142 A CN102182142 A CN 102182142A
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Abstract
The invention relates to a box girder opening structure at a main tower of a concrete box girder cable-stayed bridge. An opening section is formed at the position of a box girder corresponding to a main tower column, the upper end of the main tower column passes to the upper part of the box girder through the opening section of the box girder, and the lower end of the main tower column and a tower pier form a tower pier fixed structure and form an arrangement mode of a tower girder separated floating or semi-floating system. By the technical scheme, overall arrangement of the cable-stayed bridge and setting of the structural system are optimized, the deformation of each section of the box girder and the change of the internal pressure can be smooth on the premise of ensuring the structural stress safety of the opening area of the box girder, the stress is uniform, the structure is simple, and the construction is convenient.
Description
Technical field
The present invention relates to a kind of prestressed concrete box girder cable stayed bridge case beam construction that belongs to bridge construction engineering field, refer in particular to a kind of concrete box girder stayed-cable bridge king-tower place case beam open construction.
Background technology
At present at home in the prestressed concrete box girder cable stayed bridge, when the bridge floor broad adopts box-beam structure, and when being provided with the central reservation, the king-tower direction across bridge adopts only column type bridge tower, is generally tower beam consolidation or just structure system; The characteristics of tower beam consolidation system are with tower beam consolidation and are bearing on the pier that suspension cable becomes elastomeric bearing.The internal force of case beam is directly relevant with the bending stiffness ratio of case beam and Sarasota with amount of deflection.The case beam of this system is general only to be provided with fixed bearing at a king-post place, and all the other be vertically can movable bearing, the shortcoming of this system is the mesopore full load, the case beam causes king-post to tilt at Dun Ding place corner displacement, make cat head produce bigger horizontal movement, thereby increase amount of deflection and end bay hogging moment in the case girder span significantly; Superstructure weight and mobile load counter-force all need to pass to bridge pier by bearing in addition, very large-tonnage bearing need be set, in long span stayed-cable bridge, this bearing even reach ton is given manufacturing and designing and maintenance in the future, changing and all bring bigger difficulty of bearing like this; Just the characteristics of structure system are that tower Liang Dun is fixed mutually, form in the span to have the flexibly mounted firm structure of multiple spot, and advantage is the stability requirement of not only having exempted large-scale bearing but also having satisfied cantilever construction; The integral rigidity of structure is relatively good, and the case beam deflection is little.Shortcoming is that case beam consolidation place hogging moment is big, makes near cross section, fixed place need to strengthen; Moreover, for eliminating thermal stresses, require pier shaft to have certain flexibility when being applied in the double pylon cable stayed bridge, be usually used in the occasion of high pier, to avoid occurring excessive additional internal force.In addition, this system relatively is suitable for single pylon cable stayed bridge.
Summary of the invention
The objective of the invention is at above deficiency, when the only column type bridge tower of a kind of employing is provided, king-post is fixed by case beam opening and tower pier, it is fixed to form the tower pier, constitute the arrangement of floating or half floating system of tower beam separation, the temperature of this system raising middle flask beam, shrink and the internal force of creeping all less, and the variation of the distortion in each cross section of case beam and internal force is milder, and is stressed more even.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that a kind of concrete box girder stayed-cable bridge king-tower place case beam open construction, on the position of the corresponding king-tower king-post of case beam, form opening section, king-tower king-post upper end passes case beam top through case beam opening section, it is fixed that king-tower king-post lower end and tower pier form the tower pier, constitutes the arrangement of floating or half floating system of tower beam separation.
Form the solid concrete structure between the case chamber of longitudinally long both sides, limit, described case beam open area and the opening part vertical plate, leave certain space between described king-tower king-post and the case beam to satisfy the vertical of case beam and direction across bridge displacement adjustment requirement.
The vertical bridge in solid concrete zone is bigger to bending rigidity, and case beam internal force distributes according to the rigidity of institute's loading structure, so the internal force of the corresponding king-tower king-post of case beam position sections mainly transmits on the solid concrete structure of both sides, long limit, open area, and it is stressed less in its folded zone, thereby under the prerequisite that guarantees the concrete box girder stressing conditions, can optimize cable stayed bridge general arrangement and structural system setting.
The technique effect that the concrete box girder stayed-cable bridge king-tower place case beam open construction that the present invention relates to reaches is:
1. the present invention is on existing road oblique roller bridge concrete box girder structure foundation, by case beam opening, makes king-post and tower pier fixed, thereby optimizes cable stayed bridge general arrangement and structural system setting;
2. under the prerequisite of guard box beam open area structure stress safety, can make the variation of the distortion in each cross section of case beam and internal force milder, stressed more even;
3. simple in structure, be convenient to construction, reduce cost.
Description of drawings
Accompanying drawing 1 is arranged schematic diagram for case beam open area, king-tower of the present invention place facade;
Accompanying drawing 2 is case beam open area, king-tower of the present invention place sectional elevation schematic diagram;
Accompanying drawing 3 is case beam open area, king-tower of the present invention place flat cutting face schematic diagram;
Among the figure, 1 king-tower king-post, 2 casees beams, 3 tower piers, 4 opening sections, 5 casees chambers, 6 vertical plate.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is elaborated.
As shown in the figure, shown in Fig. 1 to 4, the concrete box girder stayed-cable bridge king-tower place case beam open construction that the present invention relates to, on the position of case beam 2 corresponding king-tower king-posts 1, form opening section 4, king-tower king-post 1 upper end passes case beam 2 tops through case beam 2 opening sections 4, it is fixed that king-tower king-post 1 lower end and tower pier 3 form the tower pier, constitutes the arrangement of floating or half floating system of tower beam separation.
Form the solid concrete structure between the case chamber 5 of longitudinally long both sides, limit, described case beam open area and the opening part vertical plate 6, leave certain space between described king-tower king-post 1 and the case beam 2 to satisfy the vertical of case beam 2 and direction across bridge displacement adjustment requirement.
The above is a preferred embodiment of the present invention only, is not to be used for limiting to claim of the present invention, and the equivalent structure that all utilizations manual of the present invention and accompanying drawing content are done changes, and all in like manner is contained in the scope of the present invention.
Claims (2)
1. concrete box girder stayed-cable bridge king-tower place case beam open construction, it is characterized in that: on the position of the corresponding king-tower king-post of case beam, form opening section, king-tower king-post upper end passes case beam top through case beam opening section, it is fixed that king-tower king-post lower end and tower pier form the tower pier, constitutes the arrangement of floating or half floating system of tower beam separation.
2. concrete box girder stayed-cable bridge king-tower according to claim 1 place case beam open construction, it is characterized in that, form the solid concrete structure between the case chamber of longitudinally long both sides, limit, described case beam open area and the opening part vertical plate, leave certain space between described king-tower king-post and the case beam to satisfy the vertical of case beam and direction across bridge displacement adjustment requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110076574 CN102182142A (en) | 2011-03-29 | 2011-03-29 | Box girder opening structure at main tower of concrete box girder cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110076574 CN102182142A (en) | 2011-03-29 | 2011-03-29 | Box girder opening structure at main tower of concrete box girder cable-stayed bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102182142A true CN102182142A (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110076574 Pending CN102182142A (en) | 2011-03-29 | 2011-03-29 | Box girder opening structure at main tower of concrete box girder cable-stayed bridge |
Country Status (1)
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| CN (1) | CN102182142A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817314A (en) * | 2012-08-31 | 2012-12-12 | 中国市政工程西北设计研究院有限公司 | Large-wing bridge section |
| CN106758815A (en) * | 2016-12-29 | 2017-05-31 | 中铁第四勘察设计院集团有限公司 | Bridge floor bridge tower structure is worn in one kind |
| CN107604804A (en) * | 2017-09-27 | 2018-01-19 | 中铁第四勘察设计院集团有限公司 | A kind of rail-road builds multi pylon cable stayed bridge with laminated |
| CN110886223A (en) * | 2019-11-06 | 2020-03-17 | 中国铁路设计集团有限公司 | Construction method for concreting steel-concrete combined tower and concrete box girder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005035875A1 (en) * | 2003-10-14 | 2005-04-21 | Aas-Jakobsen As | Bridge structure comprising tower, bridge beam, main/suspension cable, suspending bars, and diagonal cable-stays |
| CN2839363Y (en) * | 2005-10-20 | 2006-11-22 | 中铁大桥勘测设计院有限公司 | Stayed-cable bridge steel-concrete box shape combined bridge girder |
| CN1916288A (en) * | 2006-09-05 | 2007-02-21 | 武汉理工大学 | Hybrid system for controlling longitudinal vibration reaction of girder of cable stayed bridge in float type |
-
2011
- 2011-03-29 CN CN 201110076574 patent/CN102182142A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005035875A1 (en) * | 2003-10-14 | 2005-04-21 | Aas-Jakobsen As | Bridge structure comprising tower, bridge beam, main/suspension cable, suspending bars, and diagonal cable-stays |
| CN2839363Y (en) * | 2005-10-20 | 2006-11-22 | 中铁大桥勘测设计院有限公司 | Stayed-cable bridge steel-concrete box shape combined bridge girder |
| CN1916288A (en) * | 2006-09-05 | 2007-02-21 | 武汉理工大学 | Hybrid system for controlling longitudinal vibration reaction of girder of cable stayed bridge in float type |
Non-Patent Citations (2)
| Title |
|---|
| 《中国优秀硕士学位论文全文数据库》 20101015 李靖 大跨度斜拉桥边塔处主梁开口效应分析 第6页至第7页、第21页至第52页，图1-6，图4-2 1-2 , 第10期 * |
| 《铁道建筑》 20100515 白峰涛等 斜拉桥主梁开口效应分析 第5页至第7页 1-2 , 第5期 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817314A (en) * | 2012-08-31 | 2012-12-12 | 中国市政工程西北设计研究院有限公司 | Large-wing bridge section |
| CN106758815A (en) * | 2016-12-29 | 2017-05-31 | 中铁第四勘察设计院集团有限公司 | Bridge floor bridge tower structure is worn in one kind |
| CN106758815B (en) * | 2016-12-29 | 2018-12-14 | 中铁第四勘察设计院集团有限公司 | Bridge floor bridge tower structure is worn in one kind |
| CN107604804A (en) * | 2017-09-27 | 2018-01-19 | 中铁第四勘察设计院集团有限公司 | A kind of rail-road builds multi pylon cable stayed bridge with laminated |
| CN107604804B (en) * | 2017-09-27 | 2023-07-04 | 中铁第四勘察设计院集团有限公司 | Multi-tower cable-stayed bridge with common-rail and laminated layers |
| CN110886223A (en) * | 2019-11-06 | 2020-03-17 | 中国铁路设计集团有限公司 | Construction method for concreting steel-concrete combined tower and concrete box girder |
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Application publication date: 20110914 |