Wind and Structures

  • 제20권2호
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  • Pages.275-292
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  • 2015
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

The influence of vehicles on the flutter stability of a long-span suspension bridge

  • Han, Yan (School of Civil Engineering and Architecture, Changsha University of Science & Technology) ;
  • Liu, Shuqian (School of Civil Engineering and Architecture, Changsha University of Science & Technology) ;
  • Cai, C.S. (Department of Civil and Environmental Engineering, Louisiana State University) ;
  • Zhang, Jianren (School of Civil Engineering and Architecture, Changsha University of Science & Technology) ;
  • Chen, Suren (Department of Civil and Environmental Engineering, Colorado State University) ;
  • He, Xuhui (School of Civil Engineering, Central South University)
  • 투고 : 2014.12.03
  • 심사 : 2015.01.05
  • 발행 : 2015.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

The presence of traffic on a slender long-span bridge deck will modify the cross-section profile of the bridge, which may influence the flutter derivatives and in turn, the critical flutter wind velocity of the bridge. Studies on the influence of vehicles on the flutter derivatives and the critical flutter wind velocity of bridges are rather rare as compared to the investigations on the coupled buffeting vibration of the wind-vehicle-bridge system. A typical streamlined cross-section for long-span bridges is adopted for both experimental and analytical studies. The scaled bridge section model with vehicle models distributed on the bridge deck considering different traffic flow scenarios has been tested in the wind tunnel. The flutter derivatives of the modified bridge cross section have been identified using forced vibration method and the results suggest that the influence of vehicles on the flutter derivatives of the typical streamlined cross-section cannot be ignored. Based on the identified flutter derivatives, the influence of vehicles on the flutter stability of the bridge is investigated. The results show that the effect of vehicles on the flutter wind velocity is obvious.

키워드

과제정보

연구 과제 주관 기관 : National Science Foundation of China

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피인용 문헌

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  2. Flutter performance of long-span suspension bridges under non-uniform inflow vol.21, pp.2, 2018, https://doi.org/10.1177/1369433217713926
  3. Research of long-span bridge and traffic system subjected to winds: A system and multi-hazard perspective vol.6, pp.3, 2017, https://doi.org/10.1016/j.ijtst.2017.07.006
  4. Flutter and galloping of cable-supported bridges with porous wind barriers vol.171, 2017, https://doi.org/10.1016/j.jweia.2017.10.012
  5. Transient aerodynamic forces of a vehicle passing through a bridge tower's wake region in crosswind environment vol.22, pp.2, 2016, https://doi.org/10.12989/was.2016.22.2.211
  6. Influence of Stationary Vehicles on Bridge Aerodynamic and Aeroelastic Coefficients vol.22, pp.4, 2017, https://doi.org/10.1061/(ASCE)BE.1943-5592.0001017
  7. Fatigue Reliability Evaluation of Orthotropic Steel Bridge Decks Based on Site-Specific Weigh-in-Motion Measurements pp.2093-6311, 2019, https://doi.org/10.1007/s13296-018-0109-8
  8. Aerodynamic Interference Mechanism of Moving Vehicles on a Bridge Deck in Crosswind Environment vol.23, pp.4, 2018, https://doi.org/10.1061/(ASCE)BE.1943-5592.0001194
  9. Application of inverse reliability method to estimation of flutter safety factors of suspension bridges vol.24, pp.3, 2015, https://doi.org/10.12989/was.2017.24.3.249
  10. Safety Prediction Using Vehicle Safety Evaluation Model Passing on Long-Span Bridge with Fully Connected Neural Network vol.2019, pp.None, 2015, https://doi.org/10.1155/2019/8130240