SSI效应对结构地震响应的影响规律研究  

作　　者：杜姣燕 龚旭栋 柳瑞清 包超[1] 

机构地区：[1]宁夏大学土木与水利工程学院,银川750021

出　　处：《科技创新与应用》2024年第16期58-61,共4页Technology Innovation and Application

基　　金：国家级大学生创新创业训练计划(G202210749033);宁夏自然科学基金项目-优秀青年项目(2023AAC05015)。

摘　　要：SSI效应是影响土体线性、非线性性能以及地震响应的重要因素之一,当土体进入非线性或变形较大时,会引起土体附近结构动力特性发生变化。该文从数值模拟、振动台试验2个方面对国内外现有SSI理论、研究成果等进行总结阐述。对比分析刚性地基和SSI效应作用下不同类别结构的地震响应。结果表明,考虑SSI效应更符合结构实际的震害情况。不同类别的场地对结构动力特性的影响不同,SSI效应对结构抗震性能的影响存在两面性。The SSI effect is one of the important factors influencing the linear and nonlinear performance of soil and seismic response.When the soil undergoes nonlinearity or experiences significant deformation,it induces changes in the dynamic characteristics of the structure in close proximity to the soil.This paper summarizes and elaborates on the current SSI theories and research findings both domestically and internationally,covering numerical simulation and shaking table test aspects.The seismic response of various classes of structures under the influence of both rigid foundation and SSI effect is compared and analyzed.The results indicate that considering the SSI effect is more consistent with the actual earthquake damage scenario of the structure.The influence of different site classes on the dynamic characteristics of the structure varies,and the SSI effect has a dual impact on the seismic performance of the structure.

关 键 词：SSI 数值模拟 振动台试验 地震响应 结构抗震设计 

分 类 号：TU375.4[建筑科学—结构工程]