Wind and Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Aerodynamic effects of subgrade-tunnel transition on high-speed railway by wind tunnel tests

  • Zhang, Jingyu (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Zhang, Mingjin (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Li, Yongle (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Fang, Chen (Department of Bridge Engineering, Southwest Jiaotong University)
  • Received : 2018.03.06
  • Accepted : 2018.10.13
  • Published : 2019.04.25
⟨ Previous Next ⟩

Abstract

The topography and geomorphology are complex and changeable in western China, so the railway transition section is common. To investigate the aerodynamic effect of the subgrade-tunnel transition section, including a cutting-tunnel transition section, an embankment-tunnel transition section and two typical scenarios for rail infrastructures, is selected as research objects. In this paper, models of standard cutting, embankment and CRH2 high-speed train with the scale of 1:20 were established in wind tunnel tests. The wind speed profiles above the railway and the aerodynamic forces of the vehicles at different positions along the railway were measured by using Cobra probe and dynamometric balance respectively. The test results show: The influence range of cutting-tunnel transition section is larger than that of the embankment-tunnel transition section, and the maximum impact height exceeds 320mm (corresponding to 6.4m in full scale). The wind speed profile at the railway junction is greatly affected by the tunnel. Under the condition of the double track, the side force coefficient on the leeward side is negative. For embankment-tunnel transition section, the lift force coefficient of the vehicle is positive which is unsafe for operation when the vehicle is at the railway line junction.

Keywords

Acknowledgement

Supported by : Nation Natural Science Foundations of China

References

  1. Alonso-Estebanez, A., Diaz, J.J.D.C., Rabanal, F.P.A ., Pascual-Munoz, P. and Nieto, P.J.G. (2018), "Numerical investigation of truck aerodynamics on several classes of infrastructures", Wind Struct., 26(1), 35-43. https://doi.org/10.12989/WAS.2018.26.1.035
  2. Avila-Sanchez, S., Pindado, S., Lopez-Garcia, O. and Sanz-Andres, A. (2014), "Wind tunnel analysis of the aerodynamic loads on rolling stock over railway embankments: The effect of shelter windbreaks", The Scientific World J., 2014, 17.
  3. Baker, C., Cheli, F., Orellano, A., Paradot, N., Proppe, C. and Rocchi, D. (2009), "Cross-wind effects on road and rail vehicles", Vehicle. Syst. Dyn., 47(8), 983-1022. https://doi.org/10.1080/00423110903078794
  4. Baker, C.J. (1985), "The determination of topographical exposure factors for railway embankments", J. Wind Eng. Ind. Aerod., 21(1), 89-99. https://doi.org/10.1016/0167-6105(85)90035-2
  5. Baker, C.J., Jones, J., Lopez-Calleja, F. and Munday, J. (2004), "Measurements of the cross wind forces on trains", J. Wind Eng. Ind. Aerod., 92(7), 547-563. https://doi.org/10.1016/j.jweia.2004.03.002
  6. Bocciolone, M., Cheli, F., Corradi, R., Muggiasca, S. and Tomasini, G. (2008), "Crosswind action on rail vehicles: Wind tunnel experimental analyses", J. Wind Eng. Ind. Aerod., 96(5), 584-610. https://doi.org/10.1016/j.jweia.2008.02.030
  7. Cheli, F., Corradi, R., Rocchi, D., Tomasini, G. and Maestrini, E. (2010), "Wind tunnel tests on train scale models to investigate the effect of infrastructure scenario", J. Wind Eng. Ind. Aerod., 98(6), 353-362. https://doi.org/10.1016/j.jweia.2010.01.001
  8. Cheli, F., Giappino, S., Rosa, L., Tomasini, G. and Villani, M. (2013), "Experimental study on the aerodynamic forces on railway vehicles in presence of turbulence", J. Wind Eng. Ind. Aerod., 123, 311-316. https://doi.org/10.1016/j.jweia.2013.09.013
  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. Diedrichs, B., Sima, M., Orellano, A. and Tengstrand, H. (2007), "Crosswind stability of a high-speed train on a high embankment", Proc. Inst. Mech. Eng. Part F J. Rail Rapid Transit., 221(2), 205-225. https://doi.org/10.1243/0954409JRRT126
  11. Dorigatti, F., Sterling, M., Baker, C.J. and Quinn, A.D. (2015), "Crosswind effects on the stability of a model passenger train - A comparison of static and moving experiments", J. Wind Eng. Ind. Aerod., 138, 36-51. https://doi.org/10.1016/j.jweia.2014.11.009
  12. Fujii, T., Maeda, T., Ishida, H., Imai, T., Tanemoto, K. and Suzuki, M. (1999), "Wind-induced accidents of train/vehicles and their measures in Japan", Q. Rep. RTRI., 40(1), 50-55. https://doi.org/10.2219/rtriqr.40.50
  13. Ge, S.C. and Jiang, F.Q. (2009), "Analyses of the causes for wind disaster in strong wind area long Lanzhou-Xinjiang railway and the effect of windbreak", J. China Railw. Soc., 5, 1-4. (in Chinese)
  14. Giappino, S., Rocchi, D., Schito, P. and Tomasini, G. (2016), "Cross wind and rollover risk on lightweight railway vehicles", J. Wind Eng. Ind. Aerod., 153, 106-112. https://doi.org/10.1016/j.jweia.2016.03.013
  15. He, X.H., Zou, Y.F., Wang, H.F., Han, Y. and Shi, K. (2014), "Aerodynamic characteristics of a trailing rail vehicles on viaduct based on still wind tunnel experiments", J. Wind Eng. Ind. Aerod., 135, 22-33. https://doi.org/10.1016/j.jweia.2014.10.004
  16. Hu, P. and Pan, X. (2010), "Embankment wind velocity field and traffic safety under the influence of sudden cross-wind", Proceedings of the 3rd IEEE International Conference on Science and Information Technology (ICCSIT), Beijing, China, July.
  17. Kwon, H., Nam, S. and You, W. (2010), "Wind tunnel testing on crosswind aerodynamic forces acting on railway vehicles", J. Fluid Science Technol., 5(1), 56-63. https://doi.org/10.1299/jfst.5.56
  18. Li, Y., Hu, P., Cai, C.S., Zhang, M. and Qiang, S. (2013), "Wind tunnel study of a sudden change of train wind loads due to the wind shielding effects of bridge towers and passing trains", J. Eng. Mech., 139(9), 1249-1259. https://doi.org/10.1061/(ASCE)EM.1943-7889.0000559
  19. Liu, T., Chen, Z., Zhou, X. and Zhang, J. (2018), "A CFD analysis of the aerodynamics of a high-speed train passing through a windbreak transition under crosswind", Eng. Appl. Comput. Fluid Mech., 12(1), 137-151.
  20. Quinn, A.D., Robertson, A.P., Hoxey, R.P., Short, J.L., Burgess, L.R. and Smith, B.W. (1998), "The effect of small embankments on wind speeds", Wind Struct., 1(4), 303-315. https://doi.org/10.12989/was.1998.1.4.303
  21. Raghunathan, R.S., Kim, H.D. and Setoguchi, T. (2002), "Aerodynamics of high-speed railway train", Prog. Aeronaut. Sci., 38(6), 469-514. https://doi.org/10.1016/S0376-0421(02)00029-5
  22. Schober, M., Weise, M., Orellano, A., Deeg, P. and Wetzel, W. (2010), "Wind tunnel investigation of an ICE 3 endcar on three standard ground scenarios", J. Wind Eng. Ind. Aerod., 98(6), 345-352. https://doi.org/10.1016/j.jweia.2009.12.004
  23. Suzuki, M., Tanemoto, K. and Maeda, T. (2003), "Aerodynamic characteristics of train/vehicles under cross winds", J. Wind Eng. Ind. Aerod., 91(1), 209-218. https://doi.org/10.1016/S0167-6105(02)00346-X
  24. TB 10621-2014 (2014), Code for design for high speed railway, National Railway Administration of the People's Repulic of China, Beijing, China (in Chinese)
  25. Tomasini, G., Giappino, S. and Corradi, R. (2014), "Experimental investigation of the effects of embankment scenario on railway vehicle aerodynamic coefficients", J. Wind Eng. Ind. Aerod., 131, 59-71. https://doi.org/10.1016/j.jweia.2014.05.004
  26. Xia, H., Guo, W.W., Zhang, N. and Sun, G.J. (2008), "Dynamic analysis of a train-bridge system under wind action", Comput. Struct., 86(19), 1845-1855. https://doi.org/10.1016/j.compstruc.2008.04.007
  27. Xiong, X.H., Liang, X.F., Gao, G. and Liu, T.H. (2006), "Train aerodynamic characteristics in strong cross-wind on Lanzhou-Xinjiang railway line", J. Cent. South Univ. (Science Technol.), 37, 1183-1188. (in Chinese)
  28. Xu, Y.L., Xia, H. and Yan, Q.S. (2003), "Dynamic response of suspension bridge to high wind and running train", J. Bridge Eng., 8(1), 46-55. https://doi.org/10.1061/(ASCE)1084-0702(2003)8:1(46)
  29. Zhang, J., Gao, G., Liu, T. and Li, Z. (2015), "Crosswind stability of high-speed trains in special cuts", J. Cent. South Univ., 22(7), 2849-2856. https://doi.org/10.1007/s11771-015-2817-y

Cited by

  1. Comparison of wind characteristics at different heights of deep-cut canyon based on field measurement vol.23, pp.2, 2019, https://doi.org/10.1177/1369433219868074
  2. Numerical simulation on aerodynamic characteristics of moving van under the train-induced wind vol.33, pp.1, 2021, https://doi.org/10.12989/was.2021.33.1.041