A multi-mesh modeling method for nonlinear dynamic analysis of super-large-scale tunnel structure using FEM
Weng Yi-liu1; Xianlong Jin1,2; Yun Gu3; Yang Zhi-hao4
1, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2, State Key Laboratory of Vibration, Shock & Noise, Shanghai Jiao Tong University, Shanghai 200240, China;3,Shanghai Qing Cao Sha Raw Water Engineering Co.,Ltd, Shanghai 200000, China)(4, Shanghai Tunnel Engineering & Rail Transit Design and Research Institute, Shanghai 200070
Abstract：This paper proposes a multi-mesh modeling method for nonlinear dynamic analysis of super-large-scale tunnel structure using FEM, compensating the incompetence of the traditional modeling techniques. Adopting parallel computing algorithm and making effective control of the time step, the simulation for the large-scale multi-mesh model can be done on super computers. The modeling and simulation of the Qing Cao Sha Raw Water Tunnel Project is a good example of how this modeling method can be utilized practically and effectively. The result of simulation shows a combination of overall and part detailed response of the tunnel lining, thus proving the feasibility of this modeling method.
2011, Vol. 30 
