【摘要】 引入等效一致粘弹性人工边界单元及其输入方法,提出了广义坐标变换方法解决非线性结构-地基动力问题分析的高效方法.基于结构非线性动力反应问题算例与结构-地基动力相互作用系统整体算例,探讨了高效算法用于非线性结构-地基动力相互作用问题的可行性,为实现大型结构-地基系统非线性动力反应问题的快速分析奠定了基础.算例表明,作为一种快速数值计算方法,引入广义坐标变换解决强震作用下的结构-地基动力问题十分有效.更多还原

【Abstract】 Based on an approximate closed system converted by the consistent viscous-spring boundary condition,a high efficient procedure is proposed for nonlinear soil-structure dynamic interaction,combing with generalized coordinates translation method and wave input method.To apply the high efficient method into nonlinear model,the problem of soil-structure dynamic interaction,which takes the influence of material nonlinear into consideration,is studied by examples of both the rigid-base structure and the soil-structure dynamic interaction system.This study provides a useful method for solving the nonlinear problem of the large soil-structure dynamic system.The results showed that this numerical method with generalized coordinate translation is efficient for soil-structure dynamic problem in strong emotion.更多还原