高速列车引起的地基振动半解析解  

The half-analytical solution to train-induced ground vibration

作　　者：周星德[1] 林荣庚 李勇直 王现凯 吴利平[1] 

机构地区：[1]河海大学土木与交通学院,南京210098

出　　处：《计算力学学报》2015年第1期59-63,共5页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金重点(U1134207);国家自然科学基金(51178160)资助项目

摘　　要：随着列车速度的提高,地基振动的反应越来越大。根据有限元理论、轨道动力学及地基土振动Green函数,建立了轨道-无限地基土相互作用理论分析模型。为了组装系统的动力方程,通过引入静态自由度凝聚模式来消除梁存在转动自由度。借助文献[12]的柔度矩阵定义并通过Hankel变换获得了系统的刚度矩阵,进而采用Newmark法求出了系统动力反应。最后,以瑞典X2000高速旅客列车为对象进行仿真,通过与试验结果的比较来说明本文方法的可行性。The ground vibrations caused by moving trains h Based on the finite element theory, track dynamics and the grated track-soil dynamic interaction model is established. the paper, existed in literature calculated the object data. ave been intensified as the trains run faster. Green＇s functions of foundation soil,an inte In order to acquire the dynamic equations, in a static degree-of-freedom（DOF） condensation mode is utilized to eliminate the rotation DOF beam. The stiffness matrix can be determined by aid of the definition of receptance matrix in [12] and Hankel Transformation, furthermore, the dynamic responses of system can also be by Newmark method. In the last,the Sweden＇s X2000 high-speed passenger train is taken as ,the feasibility of the proposed method is demonstrated by comparing with the experimental

关 键 词：成层地基 Green’s函数 波数域 高速列车 

分 类 号：U211.3[交通运输工程—道路与铁道工程] O32[理学—一般力学与力学基础]