Effect of vertical ground motion on earthquake-induced derailment of railway vehicles over simply-supported bridges

Abstract The running safety of railway vehicles on bridges can be negatively affected by earthquake events. This phenomenon has traditionally been investigated with only the lateral ground excitation component considered. This paper presented results from a numerical investigation on the contribution of vertical ground motion component to the derailment of vehicles on simply-supported bridges. A full nonlinear wheel–rail contact model was used in the investigation together with the Hertzian contact theory and nonlinear creepage theory, which allows the wheel to jump vertically and separate from the rail. The wheel–rail relative displacement was used as the criterion for derailment events. A total of 18 ground motion records were used in the analysis to account for the uncertainty of ground motions. The results showed that inclusion of vertical ground motion will likely increase the chance of derailment. It is recommended to include vertical ground motion component in earthquake induced derailment analysis to ensure conservative estimations. The derailment event on bridges was found to be more closely related to the deck acceleration rather than the ground acceleration.

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

[2]  Xiaozhen Li,et al.  High-speed train–track–bridge dynamic interactions – Part I: theoretical model and numerical simulation , 2013 .

[3]  Rosario Chamorro,et al.  Stability Analysis of Multibody Systems With Long Flexible Bodies Using the Moving Modes Method and Its Application to Railroad Dynamics , 2014 .

[4]  Xuesong Jin,et al.  A study of the derailment mechanism of a high speed train due to an earthquake , 2012 .

[5]  Yoshiaki Terumichi,et al.  Development of Vehicle Dynamics Simulation for Safety Analyses of Rail Vehicles on Excited Tracks , 2007 .

[6]  Yoshiaki Terumichi,et al.  Analytical Study on the Safety of High Speed Railway Vehicle on Excited Tracks , 2010 .

[7]  Masamichi Sogabe,et al.  Train-Running Quality during Earthquakes and Its Improvement for Railway Long Span Bridges , 2007 .

[8]  Junjun Ding,et al.  Application of the semi-Hertzian method to the prediction of wheel wear in heavy haul freight car , 2014 .

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

[10]  Dimitrios Vamvatsikos,et al.  Incremental dynamic analysis , 2002 .

[11]  Shen-Haw Ju.  Nonlinear analysis of high-speed trains moving on bridges during earthquakes , 2012 .

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

[13]  J. K. Hedrick,et al.  A Comparison of Alternative Creep Force Models for Rail Vehicle Dynamic Analysis , 1983 .

[14]  Yoshitaka Murono,et al.  The Influence of Seismic Motion with Ground Irregularity on the Dynamic Behavior of Railway Vehicles , 2009 .

[15]  Y.-H. Huang,et al.  RESPONSE OF AN INFINITE TIMOSHENKO BEAM ON A VISCOELASTIC FOUNDATION TO A HARMONIC MOVING LOAD , 2001 .

[16]  Masaki Matsuo,et al.  RAILWAY VEHICLE DYNAMIC BEHAVIOR AGAINST LARGE-AMPLITUDE TRACK VIBRATION - A FULL-SCALE EXPERIMENT AND NUMERICAL SIMULATION , 2004 .

[17]  Wanming Zhai,et al.  TWO SIMPLE FAST INTEGRATION METHODS FOR LARGE‐SCALE DYNAMIC PROBLEMS IN ENGINEERING , 1996 .

[18]  H. Xia,et al.  Application of Train-Bridge-Interaction Analysis to Bridge Design of High-Speed Railways in China , 2012 .

[19]  Masahiko Ogura.  The Niigata Chuetsu Earthquake : railway response and reconstruction , 2006 .

[20]  Akio Matsuura.  SIMULATION FOR ANALYSING DIRECT DERAILMENT LIMIT OF RUNNING VEHICLE ON OSCILLATING TRACKS , 1998 .