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高速磁浮车辆引起地面振动的数值分析
引用本文:赵春发,贾晓宏,翟婉明.高速磁浮车辆引起地面振动的数值分析[J].西南交通大学学报,2010,45(6).
作者姓名:赵春发  贾晓宏  翟婉明
作者单位:西南交通大学牵引动力国家重点实验室;
基金项目:国家自然科学基金资助项目,教育部新世纪优秀人才支持计划资助项目,四川省青年科学基金资助项目,牵引力国家重点实验室自主研究课题资助项目
摘    要:为预测高速磁浮列车引起的地面振动响应及其衰减规律,建立了高速磁浮车桥相互作用模型和磁浮线路桩基基础有限元模型,将磁浮车桥系统动力学仿真获得的车辆动态荷载输入基础有限元模型,计算了高速磁浮车辆引起的地面振动响应.计算结果表明:磁浮车辆引起地面振动响应的衰减规律与轮轨交通车辆的衰减规律基本一致,但在距离线路中心25 m左右没有反弹区;行车速度对磁浮线路地面振动的影响较大,当时速由125 km/h提高到430 km/h时,相同观察点处地面振动级增大约10 dB.

关 键 词:磁浮列车  环境振动  有限元  动力学  数值仿真

Numerical Analysis of Ground Vibrations of Viaduct Induced by High-Speed Maglev Vehicle
ZHAO Chunfa,JIA Xiaohong,ZHAI Wanming.Numerical Analysis of Ground Vibrations of Viaduct Induced by High-Speed Maglev Vehicle[J].Journal of Southwest Jiaotong University,2010,45(6).
Authors:ZHAO Chunfa  JIA Xiaohong  ZHAI Wanming
Institution:ZHAO Chunfa,JIA Xiaohong,ZHAI Wanming(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)
Abstract:An interaction model of maglev vehicle-bridge system was built to calculate dynamic magnetic forces of maglev vehicles,and the calculated forces were input into a finite element model of the pier foundation of a viaduct to obtain ground vibration responses.Numerical results show that the attenuation law of ground vibrations induced by maglev vehicles are similar to that induced by wheel-rail vehicles,except that there is not a rebound zone about 25 m away from the track centerline.The effect of vehicle spee...
Keywords:maglev train  ground vibration  finite element method  dynamics  numerical simulation  
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