列车载荷下隧道联络通道动态响应的并行计算

以上海某大型双线隧道为例，建立了列车 隧道 联络通道 土体的大型三维有限元模型.基于上海超算中心曙光5000A，设计了列车隧道动态耦合均衡的分区方法，解决了因模型规模庞大而造成计算量大的问题.分析了列车载荷下联络通道结构的动态响应，比较了不同分区方案的计算效率.结果表明：列车载荷在联络通道与隧道连接部位引起的附加动应力较小，但该位置处于较高的应力水平，应尽量避免在联络通道位置汇车；列车隧道耦合均衡的分区方法比常用的递归坐标二分法具有更高的并行效率.

Parallel Computation for the Dynamic Response of Connectional Passage in Twin-Tunnel due to Train Load

Taking a large scale twin tunnel as an example, a 3D model of train tunnel connectional passages soil system was established. Based on Dawning 5000A in Shanghai Supercomputer Center, a train tunnel interaction balanced domain decomposition algorithm was designed to overcome the computing difficulty induced by large scale model. The dynamic response of connectional passage under train load was analyzed, the computing efficiency of different partition schemes were also compared. The results show that although the additional dynamic stress in connecting passage due to train load is small, two train intersect should be avoided in this location because of the high stress level. The train tunnel interaction balanced domain decomposition algorithm has higher parallel efficiency than the common recursive coordinate bisection method.