The analysis of the coupling response of the track-tunnel-ground system based on FEM and TMM
Zhou Biao1,2, Xie Xiong-yao1,2
1 Key Laboratory of Geotechnical & Underground Engineering, Ministry of Education, Tongji University, Shanghai 200092, China2 Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
Abstract：Abstract: A theoretical model that combined the FEM (Finite Element method) and TM(Transfer Method) is presented to simulate the dynamic response induced by the moving quasi-static or harmonic load in metro line in this paper. In this model, the tunnel is simplified as an Euler beam and coupled with the track system and the surrounding layers, where the track system is modelled by FEM while the surrounding layers is modelled by TM. Based on this theoretical model for the track-tunnel-ground layers, the dispersion characteristics of the propagating modes of vibration in the track, tunnel and the ground are presented, and the response of the ground includes the surface motion and ground stress are discussed in relation to these propagating wavenumbers. Based on this analysis, the influence factor to the wave propagation at the track and tunnel are given and Some important features of the coupled system is found.
周 彪;谢雄耀;. 基于FEM和TM方法的轨道-隧道-土层振动耦合响应分析[J]. , 2012, 31(13): 147-153.
Zhou Biao;Xie Xiong-yao;. The analysis of the coupling response of the track-tunnel-ground system based on FEM and TMM. , 2012, 31(13): 147-153.
2012, Vol. 31 
