摘要
采用振型分解法对土 结构相互作用体系进行分析.基于上部结构具有经典正交振型的假设,对控制方程进行解耦,使之成为单自由度体系,直接运用振型叠加法求解.本文方法在求解土 结构相互作用问题时与基础固定时的动力响应频域分析方法一致,只需要调整地震动输入,就可得到问题的解答.数值计算表明,本文方法的计算值与试验值吻合较好.
A vibration analysis method was applied to obtain the structural response of a system with soil-structural interaction. Based on the assumption that the superstructure possesses classical normal modes, the coupled equations were decoupled to form a set of 1-DOF systems. The proposed method can solve the interaction problem in the same way as the conventional frequency domain analysis does for a fixed-base structure. Numerical calculations showed that the proposed method was convenient and practical and could achieve reasonable precision.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第3期68-71,共4页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金项目(No.50378034)
教育部高等学校博士学科点专项基金项目(No.20030532020)
关键词
土-结构相互作用
多自由度体系
频域分析
地震反应
foundations-soil structure interaction
multidegree-of-freedom system
frequency-domain analysis
seismic response
