CN203546582U - Large span bridge vortex-induced vibration suppression structure - Google Patents
Large span bridge vortex-induced vibration suppression structure Download PDFInfo
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- CN203546582U CN203546582U CN201320660496.6U CN201320660496U CN203546582U CN 203546582 U CN203546582 U CN 203546582U CN 201320660496 U CN201320660496 U CN 201320660496U CN 203546582 U CN203546582 U CN 203546582U
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- induced vibration
- vortex
- guide rail
- vibration suppression
- bridge
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Abstract
The utility model discloses a large span bridge vortex-induced vibration suppression structure, which is capable of reducing the usage amount of steel for guide plates and thus facilitating the reduction of the construction cost of a bridge under the premise of guaranteeing an obvious vortex-induced vibration suppression effect. The large span bridge vortex-induced vibration suppression structure comprises an overhaul guide rail (11) which is fixedly mounted on a box girder bottom plate (10), wherein one side of the overhaul guide rail (11) is provided with a guide plate (20) along the direction of the bridge in full length on a single side; the guide plate (20) is fixedly mounted on the box girder bottom plate (10) by a mounting construction member (21).
Description
Technical field
The utility model relates to bridge, and particularly a kind of Loads of Long-span Bridges vortex-induced vibration suppresses structure.
Background technology
Easily there is wind-induced vibration phenomenon in Loads of Long-span Bridges, comprises flutter, vortex-induced vibration, buffeting, static(al) unstability etc.The vortex-induced vibration that wherein bridge main beam occurs under natural wind effect, although there is character and the very large destruction of dispersing unlike flutter, but also can affect comfortableness during bridge operation and the operating condition during bridge erection, when serious, also can cause structural fatigue.And do not changing under the prerequisite of bridge construction and functional performance, the profile of appropriate change bridge is arranged or more additional guiding devices, often can alleviate the wind-induced vibration of bridge.
At present, the vortex-induced vibration damping scheme of case beam has been studied by many countries, and major measure has: install tuyere, deflector, steadying plate additional, its effect is that main beam section is approached is streamlined, avoids or postpone the generation of vortex shedding.Wherein, in tool car track both sides, case beam bottom, arrange that deflector is the main technical measures that adopt, what deflector adopted conventionally is steel plate, by installation component and box beam Welding or bolt.But so arrange, rolled steel dosage and installation cost are higher, economical not.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Loads of Long-span Bridges vortex-induced vibration and suppresses structure, to guarantee that whirlpool shakes under the obvious prerequisite of inhibition of vibration, reduces deflector rolled steel dosage, thereby is conducive to reduce bridge construction cost.
It is as follows that the utility model solves the technical scheme that its technical problem adopts:
Loads of Long-span Bridges vortex-induced vibration of the present utility model suppresses structure, comprise the maintenance guide rail being fixedly installed on case beam base plate, it is characterized in that: the one-sided suitable bridge of described maintenance guide rail one side is to elongated layout deflector, and deflector is fixedly mounted on case beam base plate by installation component.
The beneficial effects of the utility model are, for Loads of Long-span Bridges, only at guide rail single-sided arrangement deflector, both can play and suppress the effect that whirlpool shakes, and significantly reduce deflector rolled steel dosage, are conducive to reduce bridge construction cost, and install more convenient.
Accompanying drawing explanation
This manual comprises as next width accompanying drawing:
Fig. 1 is the section structure schematic diagram that the utility model Loads of Long-span Bridges vortex-induced vibration suppresses structure.
The title of member shown in figure and corresponding mark: case beam base plate 10, maintenance guide rail 11, deflector 20, installation component 21.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
With reference to Fig. 1, Loads of Long-span Bridges vortex-induced vibration of the present utility model suppresses structure, comprise the maintenance guide rail 11 being fixedly installed on case beam base plate 10, at the one-sided suitable bridge of maintenance guide rail 11 1 sides (inner side or outside), to elongated layout deflector 20, deflector 20 is fixedly mounted on case beam base plate 10 by installation component 21.Deflector adopts steel plate conventionally, welds or is bolted with installation component 21.
The fourth-largest bridge of the yangtze river in nanjing of take is example, and this bridge is the controlled key project of the loyal speedway of stone, the conclusive effect that has been open to traffic to Shanghai Rong's trunk lines of national expressways branch line.Its construction documents design phase, main bridge total length was 2476m, was 166m+409m(end bay)+1418m(main span)+364m(end bay)+119m composition.Girder is the single box single chamber steel case beam of remaining silent, deck-molding (centerline) 3.5m.Wide 38.8m, central guardrail is established in centre, Ge She limit, both sides guardrail, maintaining roadway guardrail.From experiment, the main cause that causes girder vortex-induced vibration is the maintenance guide rail 11 that is positioned at case beam base plate 10, but so whirlpool shake project study mainly around maintenance guide rail 11 carry out.According in the past conventionally scheme be to arrange deflectors in maintenance guide rail 11 both sides, though its whirlpool amplitude can obviously reduce, rolled steel dosage is larger, economical not.Adopt Loads of Long-span Bridges vortex-induced vibration of the present utility model to suppress structure, only at maintenance guide rail 11 one-sided (inner side or outside), deflector 20 is being set, deflector rolled steel dosage significantly reduces, and the whirlpool inhibition of vibration that shakes is obvious, its design parameter is: maintenance guide rail 11 is apart from case beam base plate 10 edge 2.4m, and maintenance guide rail 11 is 18cm with case beam base plate 10 spacing; Maintenance guide rail 11 disposed inboard deflectors 20, the width of deflector 20 is 1.0m, edge is far from guide rail 34cm, with the angle of base plate be 23 °, with respect to the inclination angle of case beam base plate 10, be 23 °.
The above the utility model Loads of Long-span Bridges vortex-induced vibration that just explains through diagrams suppresses some principles of structure, be not the utility model to be confined to shown in and in described concrete structure and the scope of application, therefore the corresponding modify being likely utilized every and equivalent, all belong to the scope of the claims that the utility model is applied for.
Claims (2)
1. Loads of Long-span Bridges vortex-induced vibration suppresses structure, comprise the maintenance guide rail (11) being fixedly installed on case beam base plate (10), it is characterized in that: the one-sided suitable bridge of described maintenance guide rail (11) one sides is to elongated layout deflector (20), and deflector (20) is fixedly mounted on case beam base plate (10) by installation component (21).
2. Loads of Long-span Bridges vortex-induced vibration as claimed in claim 1 suppresses structure, it is characterized in that: described deflector (20) is 23 ° with respect to the inclination angle of case beam base plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320660496.6U CN203546582U (en) | 2013-10-24 | 2013-10-24 | Large span bridge vortex-induced vibration suppression structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320660496.6U CN203546582U (en) | 2013-10-24 | 2013-10-24 | Large span bridge vortex-induced vibration suppression structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203546582U true CN203546582U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320660496.6U Expired - Fee Related CN203546582U (en) | 2013-10-24 | 2013-10-24 | Large span bridge vortex-induced vibration suppression structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN203546582U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306428A (en) * | 2019-06-14 | 2019-10-08 | 中铁二院工程集团有限责任公司 | Bridge inspection car invisible track construction |
| CN115478469A (en) * | 2022-09-30 | 2022-12-16 | 高速铁路建造技术国家工程研究中心 | Vibration-suppressing flow-guiding device |
-
2013
- 2013-10-24 CN CN201320660496.6U patent/CN203546582U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306428A (en) * | 2019-06-14 | 2019-10-08 | 中铁二院工程集团有限责任公司 | Bridge inspection car invisible track construction |
| CN110306428B (en) * | 2019-06-14 | 2024-03-22 | 中铁二院工程集团有限责任公司 | Invisible track structure of bridge maintenance vehicle |
| CN115478469A (en) * | 2022-09-30 | 2022-12-16 | 高速铁路建造技术国家工程研究中心 | Vibration-suppressing flow-guiding device |
| CN115478469B (en) * | 2022-09-30 | 2023-08-25 | 高速铁路建造技术国家工程研究中心 | Vibration-suppressing flow guiding device |
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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: 20140416 Termination date: 20141024 |
|
| EXPY | Termination of patent right or utility model |