防护结构与饱和土基相互作用的动力分析

本文将结构周围的土体模拟为饱和多孔介质给出了饱和土体分析的广义Biot方程。采取多重子结构方法处理复杂结构与多孔介质土体的相互作用动力分析,扩大了问题的求解规模。对半无限域土体有限元动力分析应力波在人工边界上的反射,本文采取最新提出的一种改进的广义Smith非反射边界方法,节省了对计算机的存储要求,并使求解效率提高。文末附有算例。

Dynemic Analysis on Interaction between Protective Structure and Saturated Soil Foundation

In this paper, the soil around the structure is simulated by saturated porous medium. The generalized Biot's equations used for ana-lysis of saturated soil were given. The technique of multilevel substru- cture method was adopted to solve the dynamic interaction problem which occurred between complex structure and porous soil foundation. So the problem scale solved by the computer program is increased, For elimina-tion of stress wave reflection on the artificial boundaries in dynamic finite element analysis of half-infinite soil body. A new method known as generalized Smith non-reflecting boundary method, developed recently was used in this paper and the storage for computer was saved with enhancement of efficiency. An example is given.