运输车辆碰撞事故对在建隧道影响的数值模拟

曹露芬;金先龙;吴惠明

振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 97-100,.

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PDF(1176 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 97-100,.
论文

运输车辆碰撞事故对在建隧道影响的数值模拟

  • 曹露芬1,2; 金先龙1,2; 吴惠明3
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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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摘要

利用显式非线性有限元法对在建狭长隧道施工中运输车辆碰撞事故进行数值模拟,并研究事故对周围隧道产生的影响。为准确的模拟运输车辆碰撞时对周围隧道的影响,基于拟实建模方法,建立了大型输水工程青草沙隧道及运输车辆的三维有限元模型。通过三维动态接触方法来模拟轮轨之间的动力相互作用,能够模拟打滑、脱轨等实际接触情况。采用了基于罚函数的接触算法和基于段分类的搜索方式,对该大型输水工程隧道在运输车辆发生碰撞时的动态响应进行仿真计算。分析了运输车辆发生碰撞后车与管片的运动规律,以及在建隧道的动态响应,这对事故的防范及处理有指导作用。利用上海超级计算机曙光5000A进行并行计算,分析了对于大型工程问题的模拟仿真采用并行计算的加速效果。

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.

关键词

车辆碰撞 / 在建隧道 / 有限元法 / 动态响应 / 并行计算

Key words

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

引用本文

导出引用
曹露芬;金先龙;吴惠明. 运输车辆碰撞事故对在建隧道影响的数值模拟[J]. 振动与冲击, 2011, 30(8): 97-100,
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,

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