Wind and Structures

  • 제29권4호
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  • Pages.279-297
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  • 2019
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Driving safety analysis of various types of vehicles on long-span bridges in crosswinds considering aerodynamic interference

  • Han, Yan (School of Civil Engineering, Changsha University of Science & Technology) ;
  • Huang, Jingwen (School of Civil Engineering, Changsha University of Science & Technology) ;
  • Cai, C.S. (Department of Civil and Environmental Engineering, Louisiana State University) ;
  • Chen, Suren (Department of Civil and Environmental Engineering, Colorado State University) ;
  • He, Xuhui (School of Civil Engineering, Central South University)
  • 투고 : 2018.05.23
  • 심사 : 2019.06.17
  • 발행 : 2019.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

Strong winds threaten the safety of vehicles on long-span bridges considerably, which could force traffic authorities to reduce speed limits or even close these bridges to traffic. In order to maintain the safe and economic operation of a bridge, a reasonable evaluation of the driving safety on that bridge is needed. This paper aims at carrying outdriving safety analyses for three types of vehicles on a long-span bridge in crosswinds by considering the aerodynamic interference between the bridge and the vehicles based on the wind-vehicle-bridge coupling vibration analysis. Firstly, CFD numerical simulations along with previously obtained wind tunnel testing results were used to determine the aerodynamic force coefficients of the three types of vehicles on the bridge. Secondly, the dynamic responses of the bridge and the vehicles under crosswinds were simulated, and based on those, the driving safety analyses for the three types of vehicles on the bridge were carried out for both cases considering and not considering the aerodynamic interference between the vehicles and the bridge. Finally, the effect of the aerodynamic interference on the safety of the vehicles was investigated. The results show that the aerodynamic interference between the bridge and the vehicles not only affectsthe accident critical wind speed but also the accident type for all three types of vehicles. Such effects are also different for each of the three types of vehicles being studied.

키워드

과제정보

연구 과제 주관 기관 : National Science Foundation of China

참고문헌

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피인용 문헌

  1. Influencing Factors on Vehicles Lateral Stability on Tunnel Section in Mountainous Expressway under Strong Wind: A Case of Xi-Han Highway vol.2020, 2020, https://doi.org/10.1155/2020/1983856