CN201372405Y - Separative box-girder structure used for flutter control of cable bearing bridge - Google Patents
Separative box-girder structure used for flutter control of cable bearing bridge Download PDFInfo
- Publication number
- CN201372405Y CN201372405Y CN200920113877U CN200920113877U CN201372405Y CN 201372405 Y CN201372405 Y CN 201372405Y CN 200920113877 U CN200920113877 U CN 200920113877U CN 200920113877 U CN200920113877 U CN 200920113877U CN 201372405 Y CN201372405 Y CN 201372405Y
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- box
- bearing bridge
- split type
- beam structure
- flutter control
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Abstract
The utility model relates to the fields of bridge engineering and disaster prevention engineering. A separative box-girder structure used for flutter control of a cable bearing bridge consists of two polygonal box structures (1) with tuyeres which are symmetrical along the midline, and spacing (2) is reserved between the two polygonal box structures (1) which are connected with each other through a transverse connecting structure. The separative box-girder structure has novel structure, and the cable bearing bridge has extremely good flutter control effect.
Description
Technical field
The utility model relates to bridge engineering and the engineering field of taking precautions against natural calamities, specifically a kind of split type box-beam structure that is used for cable load-bearing bridge Flutter Control.
Background technology
In the existing large span cable load-bearing bridge, whole box girder structure has obtained using widely.But when the bridge span footpath further increases, as surmount 1500m when above, adopt the bridge flutter stability of whole box girder structure can generally be difficult to satisfy the wind force proofing design requirement, must take certain Flutter Control measure to improve the critical wind speed of flutter of structure in this case.
Summary of the invention
The purpose of this utility model is in order to solve the technological deficiency that existing cable load-bearing bridge flutter stability can be difficult to satisfy the wind force proofing design requirement, a kind of split type box-beam structure to be provided, can improving the flutter stability energy of cable load-bearing bridge effectively.
In order to realize above-mentioned purpose, the utility model has adopted following technical scheme:
A kind of split type box-beam structure that is used for cable load-bearing bridge Flutter Control, form by two polygon box structures along the band tuyere of center line symmetry, have spacing between two polygon box structures, two polygon box structures connect by horizontal syndeton.
As preferably, the angle of described two polygon box structures outside tuyere is 40 to 60 degree.
As preferably, the spacing between described two polygon box structures is 20%～50% of two polygon box structure width summations.
As preferably, described horizontal syndeton is rectangular cross section girder steel and the I-shaped cross section girder steel that is arranged in parallel.
As preferably, described rectangular cross section girder steel is identical with polygon box structure height with I-shaped cross section girder steel height, and along the vertical spaced set of bridge, spacing is 20%～30% of a split type box-beam structure overall width.
Since adopted a kind of split type box-beam structure that is used for cable load-bearing bridge Flutter Control of above-mentioned technical scheme, novel structure, and the Flutter Control effect of cable load-bearing bridge is very good.
Description of drawings
Fig. 1: the split type case beam of embodiment of the present utility model sectional schematic diagram.
Fig. 2: the local enlarged diagram of the split type case top surface of the beam of embodiment of the present utility model.
Fig. 3: critical wind speed of flutter test chart.
The specific embodiment
Below in conjunction with accompanying drawing 1-3 the specific embodiment of the present utility model is made a detailed explanation.
A kind of split type box-beam structure that is used for cable load-bearing bridge Flutter Control as Figure 1-3, by forming along the polygon box structure 1 of the symmetrical band tuyere 5 of cross section center line, exist 2, two polygon box structures 1 of spacing to connect between two polygon box structures 1 by horizontal syndeton.The angle of two polygon box structure 1 outside tuyeres 5 between 40 to 60 degree, the spacing 2 between two polygon box structures 1 be controlled at two polygon box structure width summations 20%～50% between.Laterally syndeton is a plurality of rectangular cross section girder steels 4 that are arranged in parallel and I-shaped cross section girder steel 3, rectangular cross section girder steel 4 is highly identical with polygon box structure 1 with I-shaped cross section girder steel 1 height, and along the vertical spaced set of bridge, spacing 2 is 20%～30% of a split type box-beam structure overall width.
The split type box-beam structure of monolithic box-beam structure and five kinds of different spacing the main result of sections model testing---critical wind speed of flutter is listed among Fig. 3.Spacing is D, and the case beam width is B.At gap ratio D/B is 20%～80% o'clock, the flutter stability of the split type box-beam structure of various different spacing can all be better than the monolithic box-beam structure, wherein the critical wind speed of flutter of gap ratio 40% split type box-beam structure is compared whole box-beam structure and has been promoted 20.7%, Flutter Control effect highly significant.
The foregoing description only is a this patent embodiment preferably, and the structure that all employing the technical program are described, feature and the variation on its spiritual principle, modification all belong to the protection domain of this patent.
Claims (5)
1. split type box-beam structure that is used for cable load-bearing bridge Flutter Control, it is characterized in that forming by two polygon box structures (1) along the band tuyere (5) of center line symmetry, have spacing (2) between two polygon box structures (1), two polygon box structures (1) connect by horizontal syndeton.
2. a kind of split type box-beam structure that is used for cable load-bearing bridge Flutter Control according to claim 1, the angle that it is characterized in that two polygon box structures (1) outside tuyeres (5) are 40 to 60 degree.
3. a kind of split type box-beam structure that is used for cable load-bearing bridge Flutter Control according to claim 1 is characterized in that the spacing (2) between two polygon box structures (1) is 20%～50% of two polygon box structures (1) width summation.
4. a kind of split type box-beam structure that is used for cable load-bearing bridge Flutter Control according to claim 1 is characterized in that horizontal syndeton is rectangular cross section girder steel (4) and the I-shaped cross section girder steel (3) that is arranged in parallel.
5. a kind of split type box-beam structure that is used for cable load-bearing bridge Flutter Control according to claim 4, it is characterized in that rectangular cross section girder steel (4) is highly identical with polygon box structure (1) with I-shaped cross section girder steel (3) height, and along the vertical spaced set of bridge, spacing (2) is 20%～30% of a split type box-beam structure overall width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920113877U CN201372405Y (en) | 2009-02-19 | 2009-02-19 | Separative box-girder structure used for flutter control of cable bearing bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920113877U CN201372405Y (en) | 2009-02-19 | 2009-02-19 | Separative box-girder structure used for flutter control of cable bearing bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372405Y true CN201372405Y (en) | 2009-12-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920113877U Expired - Fee Related CN201372405Y (en) | 2009-02-19 | 2009-02-19 | Separative box-girder structure used for flutter control of cable bearing bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201372405Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191746A (en) * | 2011-05-16 | 2011-09-21 | 湖南大学 | Suspension bridge with single main cable |
| CN103452036A (en) * | 2013-09-18 | 2013-12-18 | 中交公路长大桥建设国家工程研究中心有限公司 | Split streamline steel-concrete composite box girder |
| CN106638261A (en) * | 2016-12-07 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Railway bridge separated dual-box pre-stressed concrete main girder structure |
-
2009
- 2009-02-19 CN CN200920113877U patent/CN201372405Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191746A (en) * | 2011-05-16 | 2011-09-21 | 湖南大学 | Suspension bridge with single main cable |
| CN103452036A (en) * | 2013-09-18 | 2013-12-18 | 中交公路长大桥建设国家工程研究中心有限公司 | Split streamline steel-concrete composite box girder |
| CN103452036B (en) * | 2013-09-18 | 2015-05-27 | 中交公路长大桥建设国家工程研究中心有限公司 | Split streamline steel-concrete composite box girder |
| CN106638261A (en) * | 2016-12-07 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Railway bridge separated dual-box pre-stressed concrete main girder structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20160219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |