Dynamic interaction analysis of trains moving on embankments during earthquakes

Abstract This study developed a time-domain finite element method to simulate the derailment of trains moving on embankments under seismic loading. The finite element mesh included trains, rails, embankment foundation, soil, and the absorbing boundary condition, where the seismic displacements were applied at the bottom of the mesh. For the cases of a perfectly smooth rail with or without seismic loading, the train derailment coefficients are almost independent of train speeds. However, with minor rail irregularities, they are highly dependent on train speeds. This study also shows that the resonance between the train and earthquake plays an important role in train derailment. The maximum derailment coefficients are quite linear in proportion to the peak ground acceleration (PGA) of the earthquake, if the structural behaviors and dynamic soil properties are not nonlinear.

[1]  Y. K. Cheung,et al.  Impact study of cable-stayed railway bridges with random rail irregularities , 2002 .

[2]  Shen-Haw Ju,et al.  Mass types, element orders and solution schemes for the Richards equation , 1997 .

[3]  Lutz Auersch,et al.  The excitation of ground vibration by rail traffic: theory of vehicle–track–soil interaction and measurements on high-speed lines , 2005 .

[4]  S. Kramer.  Geotechnical Earthquake Engineering , 1996 .

[5]  J. Semblat,et al.  EFFICIENCY OF HIGHER ORDER FINITE ELEMENTS FOR THE ANALYSIS OF SEISMIC WAVE PROPAGATION , 2000, 0901.3715.

[6]  Julian J. Bommer,et al.  Processing of strong-motion accelerograms: needs, options and consequences , 2005 .

[7]  Gaetano Festa,et al.  PML Absorbing Boundaries , 2003 .

[8]  Guy Bonnet,et al.  Nonlinear Viscoelastic Wave Propagation: An Extension of Nearly Constant Attenuation Models , 2009 .

[9]  Jong-Dar Yau,et al.  Suspended bridges subjected to moving loads and support motions due to earthquake , 2009 .

[10]  Shen-Haw Ju,et al.  A finite element model of vehicle-bridge interaction considering braking and acceleration , 2007 .

[11]  X Jun,et al.  A study on mechanical mechanism of train derailment and preventive measures for derailment , 2005 .

[12]  Shen-Haw Ju,et al.  Time‐dependent absorbing boundary conditions for elastic wave propagation , 2001 .

[13]  Jean-François Semblat,et al.  Local amplification of deep mining induced vibrations Part 1: Experimental evidence for site effects in a coal basin , 2009 .

[14]  Yeong-Bin Yang,et al.  DYNAMIC STABILITY OF TRAINS MOVING OVER BRIDGES SHAKEN BY EARTHQUAKES , 2002 .

[15]  L. Hall.  Simulations and analyses of train-induced ground vibrations , 2003 .

[16]  J. Lysmer,et al.  Finite Dynamic Model for Infinite Media , 1969 .

[17]  Eduardo Kausel,et al.  Seismic simulation of inelastic soils via frequency-dependent moduli and damping , 2002 .

[18]  Makoto Tanabe,et al.  A Simple and Efficient Numerical Method for Dynamic Interaction Analysis of a High-Speed Train and Railway Structure During an Earthquake , 2008 .

[19]  Simon Iwnicki,et al.  Handbook of railway vehicle dynamics , 2006 .

[20]  Xiu Luo.  Study on methodology for running safety assessment of trains in seismic design of railway structures , 2005 .

[21]  Yan Han,et al.  Dynamic analysis of train–bridge system subjected to non‐uniform seismic excitations , 2006 .

[22]  J. D. Yau,et al.  Response of suspended beams due to moving loads and vertical seismic ground excitations , 2007 .

[23]  Jean-Franccois Semblat.  Rheological Interpretation of Rayleigh Damping , 1997 .