| 周星德,林荣庚,李勇直,王现凯,吴利平.高速列车引起的地基振动半解析解[J].计算力学学报,2015,32(1):59~63 |
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| 高速列车引起的地基振动半解析解 |
| The half-analytical solution to train-induced ground vibration |
| 投稿时间：2013-04-02 修订日期：2013-08-01 |
| DOI：10.7511/jslx201501010 |
| 中文关键词: 成层地基 Green's函数 波数域 高速列车 |
| 英文关键词:layered soils Green's functions wavenumber field high-speed trains |
| 基金项目:国家自然科学基金重点(U1134207);国家自然科学基金(51178160)资助项目. |
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| 中文摘要: |
| 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. |
| 英文摘要: |
| The ground vibrations caused by moving trains have been intensified as the trains run faster.Based on the finite element theory,track dynamics and the Green's functions of foundation soil,an integrated track-soil dynamic interaction model is established.In order to acquire the dynamic equations,in the paper,a static degree-of-freedom(DOF) condensation mode is utilized to eliminate the rotation DOF existed in beam.The stiffness matrix can be determined by aid of the definition of receptance matrix in literature [12] and Hankel Transformation,furthermore,the dynamic responses of system can also be calculated by Newmark method.In the last,the Sweden's X2000 high-speed passenger train is taken as the object,the feasibility of the proposed method is demonstrated by comparing with the experimental data. |
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