【作者】 吴轶； 杨春； 陈智远； 陈麟； 张春梅；

【Author】 WU Yi;YANG Chun;CHEN Zhi-yuan;CHEN Lin;ZHANG Chun-mei;Guangzhou University, Department of Civil Engineering;South China University of Technology, Department of civil engineering and transportation;South China University of Technology, State Key Laboratory of Subtropical Building Science;

【机构】 广州大学土木工程学院； 华南理工大学土木与交通学院； 华南理工大学亚热带建筑科学国家重点实验室；

【摘要】 对于地震危险性很高的地区或特别重要的建筑结构,需以对结构最为不利的地震动进行震害评估。现今虽有几种最不利地震动选取方法,然而对各种方法的准确性及适用范围缺乏系统的研究比较;而且,现阶段所采用的研究对象多是中短周期的钢筋混凝土框架结构,长周期超高层建筑结构的最不利地震动选取研究十分匮乏。因此,为研究适用于长周期超高层建筑结构的最不利地震动选取方法,本文以地震动潜在破坏势综合评价法为基础,提出改进的选取方法;并以一长周期框架-核心筒超高层结构为算例,采用Perform-3D进行弹塑性动力时程分析,从结构最大层间位移角与Park-Ang整体损伤指标的角度比较本文提出的方法与其他三种方法(概率性方法、确定性方法与地震动潜在破坏势综合评价法)的准确性。结果表明,本文所提出的方法的准确程度均高于其他三种方法,适用于实际工程中长周期超高层建筑结构的最不利地震动选取。更多还原

【Abstract】 For the regions with high seismic hazard or building structures with great importantance, seismic damage assessment should be carried out with the severest ground motion. Now there are some methods to select the severest ground motions, however, the accuracy and application scope of these methods are lack of systematic research and comparison. Besides, short or middle period RC frame structures are most research objects at present stage.There are few studies on selecting the severest ground motions for long period super high-rise building structures.Therefore,in order to study the method of selecting the severest ground motions for long period super high-rise building structures,this paper proposes a improved method based on the comprehensive evaluation method of damage potential of ground motions, and take a long period frame-core wall super high-rise structure as a example using Perform-3D for elasto-plastic dynamic time history analysis to compare the accuracy of the method proposed in this paper and the other three methods(probabilistic method,deterministic method and the comprehensive evaluation method of damage potential of ground motions) in terms of the maximum inter story drift angle and Park-Ang whole structural damage index of the structure. The results show that the accuracy of the proposed method in this paper is higher than the other three methods. It is suitable for selecting the severest ground motions of long period super high-rise building structures in practical engineering.更多还原