Effect of cross-wind on spatial vibration responses of train and track system

Abstract

By taking cross-wind forces acting on trains into consideration, a dynamic analysis method of the cross-wind and high-speed train and slab track system was proposed on the basis of the analysis theory of spatial vibration of high-speed train and slab track system. The corresponding computer program was written by FORTRAN language. The dynamic responses of the high-speed train and slab track under cross-wind action were calculated. Meanwhile, the effects of the cross-wind on the dynamic responses of the system were also analyzed. The results show that the cross-wind has a significant influence on the lateral and vertical displacement responses of the car body, load reduction factor and overturning factor. For example, the maximum lateral displacement responses of the car body of the first trailer with and without cross-wind forces are 32.10 and 1.60 mm, respectively. The maximum vertical displacement responses of the car body of the first trailer with and without cross-wind forces are 6.60 and 3.29 mm, respectively. The maximum wheel load reduction factors of the first trailer with and without cross-wind forces are 0.43 and 0.22, respectively. The maximum overturning factors of the first trailer with and without cross-wind forces are 0.28 and 0.08, respectively. The cross-wind affects the derailment factor and lateral Sperling factor of the moving train to a certain extent. However, the lateral and vertical displacement responses of rails with the cross-wind are almost the same as those without the cross-wind. The method presented and the corresponding computer program can be used to calculate the interaction between trains and track in cross-wind.

Keywords

slab track / high-speed train / cross-wind / spatial vibration / displacement / dynamic responses

References

[1] GawthropeR. G.. Wind effects on ground transportation [J]. Journal of Wind Engineering and Industrial Aerodynamics, 1994, 52(1): 73-92

[2] FujiiT., MaedaT., IshidaH.. Wind-induced accidents of train/vehicles and their measure in Japan [J]. QR of RTRI, 1999, 40(1): 50-55

[3] ChenS. R., CaiC. S.. Accident assessment of vehicles on long-span bridges in windy environments [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2004, 92(12): 991-1024

[4] LiY.-l., QiangS.-z., LiaoH.-l., XuY.-ling.. Dynamics of wind-rail vehicle-bridge systems [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2005, 93(6): 483-507

[5] XuY. L., DingQ. S.. Interaction of railway vehicles with track in cross-winds [J]. Journal of Fluids and Structures, 2006, 22(3): 295-314

[6] 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

[7] CaiC. S., ChenS. R.. Framework of vehicle-bridge-wind dynamic analysis [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2004, 92(7/8): 579-607

[8] XuY.-l., GuoW.-hua.. Effects of bridge motion and crosswind on ride comfort of road vehicles [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2004, 92(7/8): 641-662

[9] XiangJ., HeD., ZengQ.-yuan.. Analysis theory of spatial vibration of high-speed train and slab track system [J]. Journal of Central South University of Technology, 2008, 15(1): 121-126

[10] XiangJ., LiD.-j., ZengQ.-yuan.. Simulation of spatially coupling dynamic response of train track time variant system [J]. Journal of Central South University of Technology, 2003, 10(3): 226-230

[11] ImaiT., FujiiT., TanemotoK., ShimamuraT., MaedaT., IshidaH., HibinoY.. New train regulation method based on wind direction and velocity of natural wind against strong winds [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2002, 90(12/15): 1601-1610

[12] SanquerS., BarreC., de VirelM. D., CleonL. M.. Effect of cross winds on high-speed trains: Development of a new experimental methodology [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2004, 92(7/8): 535-545

[13] CharuvisitS., KimuraK., FujinoY.. Experimental and semi-analytical studies on the aerodynamic forces acting on a vehicle passing through the wake of a bridge tower in cross wind [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2004, 92(9): 749-780

[14] ZengQ.-y., XiangJ., ZhouZ.-h., LouP.Analysis theory and application of train derailment [M], 2006, Changsha, Central South University of Technology Press

[15] HuangL.Analysis of vehicle-bridge vibration under train induced wind and natural wind [D], 2007, Chengdu, Southwest Jiaotong University