地震动对隔震结构减震系数的影响研究  

THE INFLUENCE OF GROUND MOTION RECORDS ON THE SEISMIC REDUCTION COEFFICIENTS OF ISOLATED STRUCTURE

作　　者：王德才[1] 徐勤[2] 叶献国[3] 卢炳斗[2] 

机构地区：[1]合肥工业大学建筑与艺术学院,合肥230601 [2]合肥工业大学建筑设计研究院,合肥230009 [3]合肥工业大学土木与水利工程学院,合肥230009

出　　处：《工业建筑》2015年第11期19-23,156,共6页Industrial Construction

基　　金：国家自然科学基金项目(51378167);地震行业科研专项项目(201308013)

摘　　要：以某体育馆隔震建筑作为分析对象,选择三组共75条天然地震动记录和一组共25条人工模拟记录,分析采用时程分析方法计算隔震结构水平向减震系数过程中不同地震动记录对减震系数的影响。结果表明:通过控制设计谱与记录反应谱之间的匹配精度,并不能明显减小水平向减震系数的离散性;样本容量为3条时水平向减震系数的计算结果具有较大的不确定性,建议样本容量至少为7条,并以平均值作为水平向减震系数的评价结果。Taking the isolated building of a gymnasium as the analysis object,75 real records of three groups and 25 artificial records of one group were selected,and the influence of the ground motion records on the seismic reduction coefficients was analyzed in the process of calculating the reduction coefficients of isolated structures using the time history analysis method. The dispersion of the horizontal seismic reduction coefficient could not be obviously reduced through controlling the matching accuracy between the design spectrum and the response spectrum of the records. The results of the seismic reduction coefficients had a great uncertainty while the sample size was 3. The recommended sample size was at least 7,and the mean value was used as the evaluation result of the seismic reduction coefficients.

关 键 词：隔震结构 地震动 样本 反应谱 

分 类 号：TU352.12[建筑科学—结构工程]