Wind and Structures

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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)
  • Received : 2018.05.23
  • Accepted : 2019.06.17
  • Published : 2019.10.25
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Abstract

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.

Keywords

Acknowledgement

Supported by : National Science Foundation of China

References

  1. Baker, C.J. (1986), "A simplified analysis of various types of wind-induced road vehicle accidents", J. Wind Eng. Ind. Aerod., 22(1), 69-85. https://doi.org/10.1016/0167-6105(86)90012-7.
  2. Coleman, S.A. and Baker, C.J. (1990), "High sided road vehicles in cross wind", J. Wind Eng. Ind. Aerod., 36(2), 1383-1392. https://doi.org/10.1016/0167-6105(90)90134-X.
  3. Baker, C.J. (1991), "Ground vehicles in high cross winds. 3. The interaction of aerodynamic forces and the vehicle system", J. Fluids Struct., 5(2), 221-241. https://doi.org/10.1016/0889-9746(91)90478-8.
  4. Baker, C.J. (2015), "Risk analysis of pedestrian and vehicle safety in windy environments", J. Wind Eng. Ind. Aerod., 147, 283-290. https://doi.org/10.1016/j.jweia.2015.10.001.
  5. Batista M. and Perkovic, M. (2014), "A simple static analysis of moving road vehicle under crosswind", J. Wind Eng. Ind. Aerod., 128, 105-113. https://doi.org/10.1016/j.jweia.2014.02.009.
  6. Cai, C.S. (1993), "Prediction of long-span bridge response to turbulent wind", PhD. Dissertation, Department of Civil Engineering, University of Maryland, College Park, Maryland.
  7. Cao, H., Xiang, H.F. and Zhou, Y. (2000), "Simulation of stochastic wind velocity field on long-span bridges", J. Eng. Mech. - ASCE, 126 (1), 1-6. https://doi.org/10.1061/(ASCE)0733-9399(2000)126:1(1)
  8. Chen, S.R. and Cai, C.S. (2003), "Evolution of long-span bridge response to wind-numerical simulation and discussion", Comput. Struct., 81(21), 2055-2066. https://doi.org/10.1016/S0045-7949(03)00261-X.
  9. Chen, S.R. and Cai, C.S. (2004), "Accident assessment of vehicles on long-span bridges in windy environments", J. Wind Eng. Ind. Aerod., 92(12), 991-1024. https://doi.org/10.1016/j.jweia.2004.06.002.
  10. Guo, W. and Xu, Y.L. (2006), "Safety analysis of moving road vehicles on a long bridge under crosswind", J. Eng. Mech., 132(4), 438-446. https://doi.org/10.1061/(ASCE)0733-9399(2006)132:4(438).
  11. Han, Y., Hu, J.X., Cai, C.S., Chen, Z.Q. and Li, C.G. (2013), "Experimental and numerical studies of aerodynamic forces on vehicles and bridges", Wind Struct., 17(2), 163-184. https://doi.org/10.12989/was.2013.17.2.163.
  12. Han, Y., Liu, S.Q., Hu, J.X., Cai, C.S., Zhang, J.R. and Chen, Z.Q. (2014), "Experimental study on aerodynamic derivatives of a bridge cross-section under different traffic flows", J. Wind Eng. Ind. Aerod., 133, 250-262. https://doi.org/10.1016/j.jweia.2014.08.003.
  13. Han, W.S. (2006), "Three-dimensional coupling vibration of wind-vehicle-bridge system", Ph. D. Dissertation, Tongji University, Shanghai, (in Chinese).
  14. Han, W.S., Liu, H.J., Wu, J., Yuan, Y.G. and Chen, A.R. (2017), "Dynamic analysis of long-span cable-stayed bridges under wind and traffic using aerodynamic coefficients considering aerodynamic interference", Wind Struct., 24(5), https://doi.org/10.12989/was.2017.24.5.000.
  15. Kim, S.J., Yoo, C.H. and Kim, H.K. (2016), "Vulnerability assessment for the hazards of crosswinds when vehicles cross a bridge deck", J. Wind Eng. Ind. Aerod., 156, 62-71. https://doi.org/10.1016/j.jweia.2016.07.005.
  16. Li, Y.L., Zhao, K., Chen, N. and Liao, H.L. (2012), "Wind-vehicle-bridge system coupling vibration and traffic safety analysis", Eng. Mech., 29(5), 206-212, (in Chinese).
  17. Liu, Y., Yin, X.F., Deng, L. and Cai, C.S. (2016), "Ride comfort of the bridge-traffic-wind coupled system considering bridge surface deterioration", Wind Struct., 23(1), 19-43. https://doi.org/10.12989/was.2016.23.1.019.
  18. Xu, Y.L. and Guo, W.H. (2003), "Dynamic analysis of coupled road vehicle and cable-stayed bridge system under turbulent wind", Eng. Struct., 25(4), 473-486. https://doi.org/10.1016/S0141-0296(02)00188-8.
  19. Zhou, Y.F. and Chen S.R. (2015), "Full coupled driving safety analysis moving traffic on long-span bridges subjected to crosswind", J. Wind Eng. Ind. Aerod., 143, 1-18. https://doi.org/10.1016/j.jweia.2015.04.015.

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