【作者】 陈波； 温增平；

【Author】 Chen Bo;Wen Zengping;Institute of Geophysics,China Earthquake Administration;

【机构】 中国地震局地球物理研究所；

【摘要】 反应谱控制周期是调整地震动记录时所必须考虑的关键因素之一,而现行抗震设计规范对此还缺乏统一的认识和定量依据。针对该问题,本文通过对不同周期对应的加速度反应谱向量与结构最大层间位移角进行相关性分析,初步讨论了对结构非线性地震反应有重要贡献的反应谱周期特征,最后利用统计分析和归一化处理,建议了地震动记录调整中控制反应谱一致性的周期范围。分析结果表明:对于低层结构,结构基本周期已能基本满足要求;对于中高层结构,0.2T1~2T1是比较合适的控制周期范围。更多还原

【Abstract】 It is well-established that the spectral period range is one of the critical consideration in ground motion scaling. However, there are no consensus and quantitative basis in current code for seismic design of buildings. This article carries out correlation analysis between acceleration spectrum corresponding to different period point and structural non-linear seismic response. Based on the preliminary spectral period range discussion, some suggestions are presented to determine the range for scaling ground motions. The results show that the fundamental period could meet basically the requirement of low-rise buildings, in addition, 0.2T1~2T1 is adequate for medium- and high-rise buildings.更多还原