Wind tunnel tests on aerodynamic characteristics of vehicles on same-storey highway and rail bridge under crosswind

Abstract

In recent years, the safety and comfort of road vehicles driving on bridges under crosswinds have attracted more attention due to frequent occurrences of wind-induced disasters. This study focuses on a container truck and CRH2 high-speed train as research targets. Wind tunnel experiments are performed to investigate shielding effects of trains on aerodynamic characteristics of trucks. The results show that aerodynamic interference between trains and trucks varies with positions of trains (upstream, downstream) and trucks (upwind, downwind) and numbers of trains. To summarize, whether the train is upstream or downstream of tracks has basically no effect on aerodynamic forces, other than moments, of a truck driving on windward sides of bridges (upwind). In contrast, the presence of trains on the bridge deck has a significant impact on aerodynamic characteristics of a truck driving on leeward sides (downwind) at the same time. The best shielding effect on lateral forces of trucks occurs when the train is located downstream of tracks. Finally, the pressure measuring system shows that only lift forces on trains are affected by trucks, while other forces and moments are primarily affected by adjacent trains.

Keywords

same-storey highway and rail bridge / container truck / CRH2 high-speed train / aerodynamic characteristics / wind tunnel test / crosswind

References

[1] ColemanS A, BakerC J. High sided road vehicles in cross winds [J]. Journal of Wind Engineering and Industrial Aerodynamics, 1990, 36: 1383-1392

[2] CheliF, CorradiR, SabbioniE, et al.. Wind tunnel tests on heavy road vehicles: Cross wind induced loads—Part 1 [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2011, 99(10): 1000-1010

[3] CheliF, CorradiR, SabbioniE, et al.. Wind tunnel tests on heavy road vehicles: Cross wind induced loads—Part 1 [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2011, 99(10): 1000-1010

[4] ZhuL D, LiL, XuY L, et al.. Wind tunnel investigations of aerodynamic coefficients of road vehicles on bridge deck [J]. Journal of Fluids and Structures, 2012, 30: 35-50

[5] DorigattiF, SterlingM, RocchiD, et al.. Wind tunnel measurements of crosswind loads on high sided vehicles over long span bridges [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2012, 107–108: 214-224

[6] LiuX-Z, HanY, CaiC S, et al.. Wind tunnel tests for mean wind loads on road vehicles [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2016, 150: 15-21

[7] KimS J, ShimJ H, KimH K. How wind affects vehicles crossing a double-deck suspension bridge [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2020, 206: 104329

[8] SuzukiM, TanemotoK, MaedaT. Aerodynamic characteristics of train/vehicles under cross winds [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2003, 91(1–2): 209-218

[9] LiX-Z, WangM, XiaoJ, et al.. Experimental study on aerodynamic characteristics of high-speed train on a truss bridge: A moving model test [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2018, 17926-38

[10] LiangX-F, LiX-B, ChenG, et al.. On the aerodynamic loads when a high speed train passes under an overhead bridge [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2020, 202: 104208

[11] HeX H, ZouY F, WangH F, et al.. Aerodynamic characteristics of a trailing rail vehicles on viaduct based on still wind tunnel experiments [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2014, 13522-33

[12] TomasiniG, GiappinoS, CorradiR. Experimental investigation of the effects of embankment scenario on railway vehicle aerodynamic coefficients [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2014, 131: 59-71

[13] BettleJ, HollowayA G L, VenartJ E S. A computational study of the aerodynamic forces acting on a tractor-trailer vehicle on a bridge in cross-wind [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2003, 91(5): 573-592

[14] HanY, HuJ-X, CaiC S, et al.. Experimental and numerical studies of aerodynamic forces on vehicles and bridges [J]. Wind and Structures, 2013, 17(2): 163-184

[15] ZhangQ-W, SuC-Q, WangY-P. Numerical investigation on aerodynamic performance and stability of a Sedan under wind-bridge-tunnel road condition [J]. Alexandria Engineering Journal, 2020, 59(5): 3963-3980

[16] NoguchiY, SuzukiM, BakerC, et al.. Numerical and experimental study on the aerodynamic force coefficients of railway vehicles on an embankment in crosswind [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2019, 184: 90-105

[17] WangM, LiX-Z, XiaoJ, et al.. An experimental analysis of the aerodynamic characteristics of a high-speed train on a bridge under crosswinds [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2018, 177: 92-100

[18] HeX-H, XueF-R, ZouY-F, et al.. Wind tunnel tests on the aerodynamic characteristics of vehicles on highway bridges [J]. Advances in Structural Engineering, 2020, 23(13): 2882-2897