【摘要】 提出了一种用于对超大规模隧道结构进行有限元分析的混合模型建模方法,弥补了以往仿真计算中宏观与微观不能同时兼顾的不足。利用并行算法,并对整体混合模型的计算时间步进行了有效的控制,使超级计算机能完成此类超大规模整体混合模型的计算。用混合模型建模法对青草沙水源地原水工程输水隧道进行非线性动态有限元仿真,得到的结果既反映了宏观的响应规律,又反映了局部精细结构的具体变化,证明了此种混合模型建模方法的可行性。更多还原

【Abstract】 A multi-mesh FE modeling method for nonlinear dynamic analysis of a super-large-scale tunnel structure was proposed,remedying the shortcomings of the traditional modeling techniques.Adopting parallel computing algorithm and making effective control of the time step,the simulation for a large-scale multi-mesh model could be performed on a super computer.The modeling and simulation for Qing Cao Sha Raw Water Tunnel Project was a good example to show how this modeling method could be utilized practically and effectively.The simulation results showed a combination of the overall and part detailed response of the tunnel lining,verifying the feasibility of this modeling method.更多还原