Numerical Simulation of the Impact on Constructing Tunnel by Transport Vehicles Collision Accident

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (8) : 97-100,.

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Numerical Simulation of the Impact on Constructing Tunnel by Transport Vehicles Collision Accident

CAO Lu-fen1,2, JIN Xian-long1,2, WU Hui-ming3

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Abstract

Explicit non-linear finite element method is applied to simulate the accident caused by the collision of transport vehicles in the construction of the long and narrow tunnel, and the impact of the accident on surrounding tunnel is analyzed. Based on the Virtual-Reality modeling, a three dimension finite element was built up as the model of large-scale water diversion tunnel of Qingcaosha and transport vehicles inside, in order to accurately simulate the impact on the surrounding tunnel caused by the collision. The three-dimensional dynamic contact method, which can simulate the actual situation of wheel slip and derail, was used to simulate the dynamic interaction between wheel and rail. Based on the contact algorithm of penalty function and the segment classification of search method, the dynamic response of the surrounding tunnel during collision was simulated. The movements of vehicles and segment, as well as the dynamic response of tunnel after collision were analyzed. The results will be helpful for prevention and treatment of such kind of accident. Parallel-computing method was used, with the computing resources of ShangHai Supercomputer Downing 5000A. The accelerating effect of parallel-computing was analyzed in the simulation of large-scale engineering problems.

Key words

vehicle collision / tunnel under construction / finite element method / dynamic response / parallel computing

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CAO Lu-fen;JIN Xian-long;WU Hui-ming. Numerical Simulation of the Impact on Constructing Tunnel by Transport Vehicles Collision Accident[J]. Journal of Vibration and Shock, 2011, 30(8): 97-100,