【摘要】 基于笔者提出的考虑基础动力阻抗函数频率相关特性的地基阻抗力时域计算方法,对时域递归参数的拟合方法和所选系统稳定条件进行了研究,编制了阻抗力时域递归参数的计算程序。基于通用有限元软件和地基阻抗力时域差分形式,完成了考虑土–结构动力相互作用影响的结构时程分析程序二次开发。最后,通过数值算例验证了该方法的有效性,并初步讨论了土–结构相互作用系统动力响应分析中基础动力阻抗函数频率相关性的影响。更多还原

【Abstract】 Based on the time-domain approach of computing foundation resistance with the frequency dependence of foundation impedance,the parameter fitting method and system stability were studied,and the computation procedure for time-domain recursive parameters of ground resistance was developed.By use of general FEM software and the time-domain difference of ground resistance,the structure history analysis programs with consideration of soil-structure dynamic interaction was developed.Finally,a numerical example was presented to verify the validity of the proposed method.The effect of impedance frequency dependence of foundation on the dynamic response of soil-structure system was preliminary discussed.更多还原