软基SSI体系的简化地震响应分析方法  

SIMPLIFIED SEISMIC ANALYSIS METHOD OF SOFT SOIL SSI SYSTEM

作　　者：张之颖[1] 吕西林[1] 曹文清[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《岩石力学与工程学报》2004年第11期1900-1905,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金重点资助项目(59823002)。

摘　　要：研究了软基SSI体系简化地震响应分析方法。在前期试验和计算结果的基础上,提出了土、结构小刚度比下SSI体系的简化动力计算模型及其参数的反演算法,推导了软基SSI体系简化动力计算模型下的地震响应分析方法。并通过试验软基SSI体系,考证了这一体系下简化动力模型的建模思路。A simplified seismic analysis method of soft soil SSI system is studied. Based on the earlier stage tests and FEM analysis, a simplified dynamic model with small relative dynamic stiffness ratio of soil to superstructure is put forward, and the inversion solution of model parameters is presented. The seismic analysis method of soft soil SSI system with simplified dynamic model is derived. By comparison of computational solution and test result, the thought of simplified modeling is confirmed.

关 键 词：土力学 软土 SSI体系 振动台试验 动力模型 结构参数 地震响应 

分 类 号：TU413.7[建筑科学—岩土工程] TU472.31[建筑科学—土工工程]