Wind and Structures

  • 제20권2호
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  • Pages.237-247
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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

Aerodynamic interaction between static vehicles and wind barriers on railway bridges exposed to crosswinds

  • Huoyue, Xiang (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Yongle, Li (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Bin, Wang (Department of Bridge Engineering, Southwest Jiaotong University)
  • 투고 : 2014.11.14
  • 심사 : 2015.01.08
  • 발행 : 2015.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

Wind tunnel experiments are used to investigate the aerodynamic interactions between vehicles and wind barriers on a railway bridge. Wind barriers with four different heights (1.72 m, 2.05 m, 2.5 m and 2.95 m, full-scale) and three different porosities (0%, 30% and 40%) are studied to yield the aerodynamic coefficients of the vehicle and the wind barriers. The effects of the wind barriers on the aerodynamic coefficients of the vehicle are analyzed as well as the effects of the vehicle on the aerodynamic coefficients of the wind barriers. Finally, the relationship between the drag forces on the wind barriers and the aerodynamic coefficients of the vehicle are discussed. The results show that the wind barriers can significantly reduce the drag coefficients of the vehicle, but that porous wind barriers increase the lift forces on the vehicle. The windward vehicle will significantly reduce the drag coefficients of the porous wind barriers, but the windward and leeward vehicle will increase the drag coefficients of the solid wind barrier. The overturning moment coefficient is a linear function of the drag forces on the wind barriers if the full-scale height of the wind barriers $h{\leq}2.5m$ and the overturning moment coefficients $C_O{\geq}0$.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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  2. Wind loads of moving vehicle on bridge with solid wind barrier vol.156, 2018, https://doi.org/10.1016/j.engstruct.2017.11.009
  3. Numerical simulation of the protective effect of railway wind barriers under crosswinds vol.3, pp.3, 2015, https://doi.org/10.1080/23248378.2015.1054906
  4. Aerodynamic and aeroelastic characteristics of typical bridge decks equipped with wind barriers at the windward bridge-deck edge vol.137, 2017, https://doi.org/10.1016/j.engstruct.2017.01.055
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  11. Influences of Wind Barriers on the Train Running Safety on a Highway-Railway One-Story Bridge vol.21, pp.14, 2015, https://doi.org/10.1142/s0219455421400095
  12. Protective effect of railway bridge wind barriers on moving trains: An experimental study vol.220, pp.None, 2015, https://doi.org/10.1016/j.jweia.2021.104879