基于两质点模型的层间隔震体系参数分析  

PARAMETRIC ANALYSIS OF STORY ISOLATION SYSTEM BASED ON TWO-PARTICLE MODEL

作　　者：轩鹏 李爱群[1,2] 包霞 何强 

机构地区：[1]东南大学土木工程学院,南京210096 [2]北京建筑大学,北京100044 [3]新疆建筑科学研究院(有限责任公司),乌鲁木齐830054

出　　处：《工业建筑》2015年第11期14-18,44,共6页Industrial Construction

基　　金：国家杰出青年科学基金项目(50978056);国家科技支撑计划资助项目(2006BAJ03A04);国家自然科学基金项目(51278104);乌鲁木齐市科技局(Y131330013);建设委员会(2013009)资助项目

摘　　要：通过建立层间隔震结构的两质点分析模型,考察了上、下部结构的质量比、频率比等参数对体系动力特性及地震反应的影响,探讨参数变化对隔震系统减震效果的影响规律。研究分析表明:随着隔震层位置的下移,结构一阶模态质量参与系数逐渐变大,体系减震机理由调谐质量阻尼器逐渐过渡为基础隔震;对上、下部结构响应的控制,存在最优频率比。最后通过对一个两质点结构的时程分析,验证了上述理论分析的正确性。A two-particle analysis model of story isolation structure was set up to investigate the impacts of mass ratio and frequency ratio of the upper and lower structures on the dynamic characteristics and seismic response of the structure,and discussed the influence of these parameters＇ change on the vibration attenuation effect of the isolation system. The results demonstrated that the first modal mass participation factor increased and the working mechanism changed from TMD to base isolation,as the location of the isolation story declines; there was an optimal frequency ratio range for the control of the responses. Time history analysis of a two-particle structure was employed to verify the correctness of the theoretical analysis.

关 键 词：层间隔震 两质点体系 动力特性 地震响应 时程分析 

分 类 号：TU352.12[建筑科学—结构工程]