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Analysis of the Dynamic Response of Qinghai-Tibetan Railway Embankment in Permafrost Regions under Train Load

LI Shuang-yang,ZHANG Ming-yi,ZHAO Shu-juan,HUANG Zhi-jun(State Key Laboratory of Frozen soil Engineering,CAREERI,CAS,Lanzhou Gansu 730000,China)  
Based on the governing differential equations of the transient temperature field with phase change,the temperature field in the Qinghai-Tibetan railway embankment is analyzed through using finite element formulae deduced by Galerkin method.Following,according to the characteristics of the temperature field and the Biot dynamic consolidation equations deduced by Biot dynamic consolidation theory,the dynamic response of Qinghai-Tibetan railway embankment under train load is computed by adopting heat force indirect coupling method.The vibration pore water pressure,stress and displacement in the embankment are analyzed systematically.
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