CN203668809U - Deflectors for controlling vortex-induced vibration of closed steel box girder bridge - Google Patents
Deflectors for controlling vortex-induced vibration of closed steel box girder bridge Download PDFInfo
- Publication number
- CN203668809U CN203668809U CN201320843049.4U CN201320843049U CN203668809U CN 203668809 U CN203668809 U CN 203668809U CN 201320843049 U CN201320843049 U CN 201320843049U CN 203668809 U CN203668809 U CN 203668809U
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- deflector
- box girder
- steel box
- closed steel
- bridge
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Abstract
The utility model provides deflectors for controlling vortex-induced vibration of a closed steel box girder bridge and relates to bridge engineering technologies. The deflectors solve the problem that being sensitive to the wind action, a closed steel box girder is prone to large-amplitude vortex-induced vibration under a low wind speed. The deflectors are symmetrically arranged on wind nozzles on the two sides of the closed steel box girder and fixedly connected with the wind nozzles in a riveting or bolting or welding mode. The deflectors are continuously arranged on the whole bridge in the longitudinal direction of the bridge, and the free end of the cross section of each deflector is provided with an arc. The included angle between each deflector and the horizontal direction of the corresponding wind nozzle ranges from -15 degrees to 15 degrees. The width b of each deflector is 1/40 to 1/30 the bridge deck width, and the thickness t of each deflector ranges from 10 mm to 20 mm. The deflators change the air flow-past-body characteristic of the closed steel box girder bridge and have an obvious control effect on vortex-induced vibration of the closed steel box girder bridge. The deflectors are mainly used for controlling vortex-induced vibration of the closed steel box girder bridge.
Description
Technical field
The utility model belongs to technical field of bridge engineering, particularly for controlling the deflector of closed steel box girder bridge vortex-induced vibration.
Background technology
Globality is strong, intensity is high owing to having for closed steel case beam, from heavy and light, batch production degree advantages of higher, become the main selection of modern large span bridge.But large span, from heavy and light, the feature such as structure is soft, damping is little, make closed steel case beam comparatively responsive to wind action, under low wind speed, easily there is the whirlpool that amplitude is larger and swash resonance.Can not make bridge unstable failure though resonance is swashed in whirlpool, can accelerate the fatigue of bridge member, and operation security and comfortableness to bridge exerts an influence.Therefore taking effective vortex-induced vibration control measure to improve its wind performance of shaking has very important significance.
Utility model content
The purpose of this utility model is to provide a kind of for controlling the deflector of closed steel box girder bridge vortex-induced vibration, and it can effectively be controlled the whirlpool of closed steel box girder bridge and swash resonance amplitude, improves its overall wind performance of shaking.
The purpose of this utility model is achieved through the following technical solutions:
For controlling a deflector for closed steel box girder bridge vortex-induced vibration, deflector 1 is symmetricly set on the tuyere position of closed steel case beam both sides, and deflector is connected with tuyere end, arranges continuously along the longitudinal full-bridge of bridge, and the free end of deflector cross section is provided with circular arc.
Described deflector 1 is fixedly connected with tuyere 3 ends by riveted joint, bolt or welding.
Described deflector 1 is-15 °～+ 15 ° with the horizontal direction angle of tuyere 3.
The width b of described deflector 1 is bridge deck width 1/40～1/30, and thickness t is 10～20mm.
Described deflector 1 is made up of some sections, and each deflector 1 sections length is 4～6m; Between each deflector 1 sections by welding, bolt or riveting.
Described deflector 1 adopts density alloy or composite material little and that rigidity is large to make; The free end of deflector cross section is provided with circular arc.
Brief description of the drawings
Fig. 1 is that the utility model is at closed steel box girder bridge cross section position view;
Fig. 2 is the local enlarged diagram of the closed steel box girder bridge of the utility model;
Fig. 3 is the utility model deflector sections schematic perspective view;
Mark in accompanying drawing:
Deflector width b; Deflector thickness t; Deflector sections length.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described.
The utility model swashs resonance amplitude for the whirlpool of effectively controlling closed steel box girder bridge, is symmetrical arranged deflector 1 at closed steel case beam 2 both sides tuyere 3 positions, and deflector 1 is connected with tuyere 3 ends, arranges continuously along the longitudinal full-bridge of bridge.
Described deflector 1 adopts density alloy or composite material little and that rigidity is large to make; The free end of deflector 1 cross section is provided with circular arc; Deflector 1 is fixedly connected with tuyere 3 ends by riveted joint, bolt or welding, and deflector 1 is-15 °～+ 15 ° with horizontal direction angle.
Described deflector 1 width b is 1/40～1/30 of bridge deck width, and thickness t is 10～20mm; Deflector 1 is made up of several sections, and each deflector 1 sections length is 4～6m; Between each deflector 1 sections by welding, bolt or riveting.
Advantage compared with prior art of the utility model and effect are that the whirlpool that it can effectively control closed steel box girder bridge swashs resonance amplitude.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (5)
1. one kind for controlling the deflector of closed steel box girder bridge vortex-induced vibration, it is characterized in that: deflector (1) is symmetricly set on tuyere (3) position of closed steel case beam (2) both sides, deflector (1) is connected with tuyere (3) end, arrange continuously along the longitudinal full-bridge of bridge, the free end of deflector (1) cross section is provided with circular arc.
2. according to claim 1 a kind of for controlling the deflector of closed steel box girder bridge vortex-induced vibration, it is characterized in that: described deflector (1) is fixedly connected with tuyere (3) end by riveted joint, bolt or welding.
3. according to claim 1 a kind of for controlling the deflector of closed steel box girder bridge vortex-induced vibration, it is characterized in that: described deflector (1) is-15 °～+ 15 ° with the horizontal direction angle of tuyere (3).
4. according to claim 1 a kind of for controlling the deflector of closed steel box girder bridge vortex-induced vibration, it is characterized in that: the width b of described deflector (1) is bridge deck width 1/40～1/30, thickness t is 10～20mm.
5. according to claim 1 a kind of for controlling the deflector of closed steel box girder bridge vortex-induced vibration, it is characterized in that: deflector (1) is made up of some sections, each deflector (1) sections length is 4～6m; Between each deflector (1) sections by welding, bolt or riveting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320843049.4U CN203668809U (en) | 2013-12-19 | 2013-12-19 | Deflectors for controlling vortex-induced vibration of closed steel box girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320843049.4U CN203668809U (en) | 2013-12-19 | 2013-12-19 | Deflectors for controlling vortex-induced vibration of closed steel box girder bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203668809U true CN203668809U (en) | 2014-06-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320843049.4U Expired - Fee Related CN203668809U (en) | 2013-12-19 | 2013-12-19 | Deflectors for controlling vortex-induced vibration of closed steel box girder bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203668809U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525565A (en) * | 2016-01-28 | 2016-04-27 | 西南交通大学 | Vibration suppression structure for vortex-induced vibration of streamline box girder |
| CN106271412A (en) * | 2016-08-22 | 2017-01-04 | 江苏广耀建设有限公司 | The bridge manufacture method of aluminium alloy deflector |
| CN107700335A (en) * | 2017-09-27 | 2018-02-16 | 中南大学 | A kind of rotatable blades guiding device for box girder bridge of slotting |
-
2013
- 2013-12-19 CN CN201320843049.4U patent/CN203668809U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525565A (en) * | 2016-01-28 | 2016-04-27 | 西南交通大学 | Vibration suppression structure for vortex-induced vibration of streamline box girder |
| CN106271412A (en) * | 2016-08-22 | 2017-01-04 | 江苏广耀建设有限公司 | The bridge manufacture method of aluminium alloy deflector |
| CN106271412B (en) * | 2016-08-22 | 2018-06-19 | 江苏广耀建设有限公司 | The production method of bridge aluminium alloy deflector |
| CN107700335A (en) * | 2017-09-27 | 2018-02-16 | 中南大学 | A kind of rotatable blades guiding device for box girder bridge of slotting |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20161219 |