CN200974956Y - Prestressed concrete box girder - Google Patents
Prestressed concrete box girder Download PDFInfo
- Publication number
- CN200974956Y CN200974956Y CN 200620166014 CN200620166014U CN200974956Y CN 200974956 Y CN200974956 Y CN 200974956Y CN 200620166014 CN200620166014 CN 200620166014 CN 200620166014 U CN200620166014 U CN 200620166014U CN 200974956 Y CN200974956 Y CN 200974956Y
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- box girder
- prestressed concrete
- adopts
- bridge
- concrete box
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Abstract
The utility model relates to a box girder of a prestressed concrete for a bridge construction. The bridge adopts the chip and separated prestressed concrete to prefabricate the box girder with a wet-joint connection among the boxes. A beam and a clapboard are arranged in the boxes and strengthened by a transverse contract for each hole between the two separated boxes. A support in the middle of each box girder is double line support and a side support is a single line support. Pier foundations all adopt a hollow column pile of concrete. The box girder of the prestressed concrete of the utility model has the advantages of safety, esthetic appearance, simple construction, fast speed, economical charge, reliable use and convenient maintenance.
Description
Technical field
The utility model relates to bridge construction, is specifically related to a kind of case beam of long-span bridge beam, belongs to International Classification of Patents E01D2/04 " is the bridge of feature to support the spanning structural section---case beam " technical field.
Background technology
Along with China's rapid development of economy, the next century, China will build the engineering over strait of considerable scale.The bridge that super large is striden whole opening prefabricated this form of structure of installation in footpath will occupy a tiny space in these engineerings over strait, and relevant design and construction technology should be developed early, study.The design of long-span bridge engineering access bridge bridge type the time should take into full account the job practices of batch production, scale, assemblingization, so not only can the reduction of erection time, and the reduction expense, and can guarantee workmanship.
Summary of the invention
The purpose of this utility model is to provide a kind of structural safety reliable prestressed concrete box girder.
The technical solution of the utility model is as follows.
A kind of prestressed concrete box girder, the wide chip separate type prestressed concrete prefabricated case beam that all adopts of its bridge connects by wet seam between case.
Every Kong Jun is provided for strengthening the crossbeam and the dividing plate of lateral ties in case and between two casees of separate type.
Every middle bearing of case beam all adopts double bearing, and the limit bearing adopts single bearing.
The bridge pier pile foundation that is used all adopts the concrete hollow hollow tube pile.
Prestressed concrete box girder of the present utility model, safe and reliable on the structure, economy and beautiful appearance, easy construction, speed is fast, and expense is saved, and uses reliably, is convenient to maintenance.
Description of drawings
Fig. 1 is case beam cross-sectional configuration figure of the present utility model;
Fig. 2 is concrete hollow pier, the stake organigram that assembles with the utility model case beam.
Among the figure: 1, case beam, 2, dividing plate, 3, crossbeam.
The specific embodiment
With reference to Fig. 1, the design scheme of superstructure, uniform section prestressed concrete continuous box girder bridge is adopted in overall consideration, the wide chip separate type prestressed concrete prefabricated case beam 1 that all adopts of bridge, connect by wet seam between case, such structure is handled the hoisting weight that has not only reduced prefabricated case beam significantly, is convenient to the lifting of whole hole, and can guarantees that chip case beam is stressed jointly.Every Kong Jun is provided with twice end floor beam 3 with median septum 2 in case and between separate type two casees, to strengthen lateral ties, strengthen the holistic resistant behavior of structure, and can improve prefabricated case beam in movement, reliability when lifting.
The bridge opening that matches arranges, make non-navigation bridge can with stride the navigation bridge greatly mutually along connecing, and attractive in appearance, nature makes various spanning one integrated mass of striding the footpath, and is harmonious smooth.
Bearing is arranged: every intermediate support all adopts double bearing, and the limit bearing adopts single bearing, and promptly the first phase dead load is born by system of simple supporting, and the second stage of dead load and mobile load are born by continuous system.All bearings are permanent bearing, the double as temporary support.Handle like this and saved the troublesome operation that conventional freely-supported changes consecutive hours replacing bearing, make easy construction, easily go, shortened the engineering construction cycle effectively, reduced construction costs; And double bearing can reduce mid-span deflection, increases the rigidity of structure, reduces central bearing point mobile load hogging moment, and it is more reasonable that structural internal force is distributed.
Prestressed concrete box girder is prefabricated at precasting yard, the barge transportation by driving, adopt crane barge lifting installation in position, laterally adopts cast-in-place wet seam to connect, and changes continuation method by general freely-supported again and forms beam structure.
With reference to Fig. 2, inwall stayed the prestressing force open channel when hollow pier was prefabricated, and the joint is manufactured three road convex-concave locating slots and is coated with into epoxy mortar and connects.The prestressed reinforcement fixed end is imbedded in cast-in-place section of the stake top, rises and arranges along reserving the prestressing force open channel, treat the bridge pier installation after, prestressed reinforcement in the stretch-draw open channel again, anchoring rear enclosed open channel forms the hollow thin-wall pier.Solid pier adopts sliding formwork or creeping formwork to carry out cast-in-place.
Bridge pier adopts two kinds of forms, and general pier adopts the only post assembling of the circular thin-walled of prestressed concrete pier, adopts the cast-in-place rectangle pier of steel concrete queen post in conjunction with pier.The bridge pier pile foundation all adopts the concrete hollow hollow tube pile, and hollow tube pile is divided into 2 classes, and the I class is applicable to that mud is thin and is easy to into bore section that the II class is applicable to the thicker bore section that is difficult to into of mud.For accelerating speed of application, reduce the offshore construction workload, improve construction quality, substructure adopts fabricated job practices more.
The advantage of prestressed concrete box girder is as follows:
Structural shape is simple, and dependable performance is convenient to maximization, industrialization, assembling production;
Construction method is simple, technology maturation, and the offshore construction cycle is short;
Adopting armored concrete and prestressed concrete is basic bridge construction material, and it is durable to improve structure The property, reduce the maintenance costs during runing;
Have preferably antidetonation, wind resistance;
Adopt big specification retractor device, improve the comfortableness of driving.
Claims (4)
1, a kind of prestressed concrete box girder is characterized in that: the wide chip separate type prestressed concrete prefabricated case beam (1) that all adopts of bridge connects by wet seam between case.
2, prestressed concrete box girder according to claim 1 is characterized in that: every Kong Jun is provided for strengthening the crossbeam (3) and dividing plate (2) of lateral ties in case and between two casees of separate type.
3, prestressed concrete box girder according to claim 1 is characterized in that: every middle bearing of case beam (1) all adopts double bearing, and the limit bearing adopts single bearing.
4, prestressed concrete box girder according to claim 1 is characterized in that: the bridge pier pile foundation that is used all adopts the concrete hollow hollow tube pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620166014 CN200974956Y (en) | 2006-12-11 | 2006-12-11 | Prestressed concrete box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620166014 CN200974956Y (en) | 2006-12-11 | 2006-12-11 | Prestressed concrete box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200974956Y true CN200974956Y (en) | 2007-11-14 |
Family
ID=38901244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620166014 Expired - Fee Related CN200974956Y (en) | 2006-12-11 | 2006-12-11 | Prestressed concrete box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200974956Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935977A (en) * | 2010-09-29 | 2011-01-05 | 郑州大学 | Assembly type hollow slab bridge adopting bracket to replace ribbet to transmit force |
| CN102587282A (en) * | 2012-03-11 | 2012-07-18 | 中铁二十局集团第二工程有限公司 | Large-section simply-supported box girder precasting and assembly process under conditions of strong wind and high altitude |
| CN103046464A (en) * | 2012-12-31 | 2013-04-17 | 中铁第四勘察设计院集团有限公司 | Continuous bridge structure with bridge floor different in width |
| CN104929034A (en) * | 2015-06-25 | 2015-09-23 | 浙江大学 | Small modularized steel-concrete rapid-construction box girder bridge and construction method thereof |
| CN105155399A (en) * | 2015-07-31 | 2015-12-16 | 中铁第四勘察设计院集团有限公司 | Small box girder bridge and building method thereof |
| CN108239914A (en) * | 2017-12-22 | 2018-07-03 | 中铁大桥局集团有限公司 | Separate type box-shaped composite beam and construction method |
| CN108277733A (en) * | 2018-01-31 | 2018-07-13 | 重庆交通大学 | The small fabricated box girder bridge and preparation method thereof that hinge seam deterioration influences can be resisted |
-
2006
- 2006-12-11 CN CN 200620166014 patent/CN200974956Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935977A (en) * | 2010-09-29 | 2011-01-05 | 郑州大学 | Assembly type hollow slab bridge adopting bracket to replace ribbet to transmit force |
| CN101935977B (en) * | 2010-09-29 | 2012-04-25 | 郑州大学 | Assembly type hollow slab bridge adopting bracket to replace ribbet to transmit force |
| CN102587282A (en) * | 2012-03-11 | 2012-07-18 | 中铁二十局集团第二工程有限公司 | Large-section simply-supported box girder precasting and assembly process under conditions of strong wind and high altitude |
| CN103046464A (en) * | 2012-12-31 | 2013-04-17 | 中铁第四勘察设计院集团有限公司 | Continuous bridge structure with bridge floor different in width |
| CN104929034A (en) * | 2015-06-25 | 2015-09-23 | 浙江大学 | Small modularized steel-concrete rapid-construction box girder bridge and construction method thereof |
| CN105155399A (en) * | 2015-07-31 | 2015-12-16 | 中铁第四勘察设计院集团有限公司 | Small box girder bridge and building method thereof |
| CN108239914A (en) * | 2017-12-22 | 2018-07-03 | 中铁大桥局集团有限公司 | Separate type box-shaped composite beam and construction method |
| CN108239914B (en) * | 2017-12-22 | 2019-04-30 | 中铁大桥局集团有限公司 | The construction method of separate type box-shaped composite beam |
| CN108277733A (en) * | 2018-01-31 | 2018-07-13 | 重庆交通大学 | The small fabricated box girder bridge and preparation method thereof that hinge seam deterioration influences can be resisted |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |