Dynamic Interaction Analysis of High-speed Train-track- bridge System during Earthquakes
Based on the structural dynamics theory ,seismic loads are applied to the bridge supports. By using the high-speed train-track-bridge coupled dynamics method ,the dynamic model and equations for high-speed train,track and bridge are established. Taking typical ground accelerations into account, the dynamic interaction responses of high-speed train-track -bridge system during earthquakes with and without considering track irregularity are simulated. The running safeties of highspeed trains under seismic loads with different peak ground acceleration are analyzed. The results indicate that the influence of seismic loads on the coupled system in lateral is more sensitive than that in vertical. The reduction ratios of wheel -load and the lateral wheel axis forces are both affected by running speed and earthquake intensity. The lateral accelerations of vehicle body are primary affected by earthquake intensity. The earthquake intensity has little effect on the vertical vibration of vehicle.
Shaolin WANG Wanming ZHAI Guoying TTAN
Train and Track Research Institute , State Key Laboratory of Traction Power,Southwest Jiaotong University , Chengdu 610031, China
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
411-417
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）