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。
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.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2008年第1期34-40,共7页
Chinese Journal of Geotechnical Engineering
基金
国家杰出青年科学基金资助项目(50325826)
国家自然科学基金重大研究计划项目(90715032)
北京市教育委员会科学技术与研究生建设项目(4700001401509)
关键词
土–结构动力相互作用
动力阻抗函数
频率相关
稳定性
时域差分
soil-structure dynamic interaction
foundation dynamic impedance
frequency dependent
stability
time-domain difference
