中美抗震设计中地震波选取方法比较研究  

Comparative Study on the Ground Motion Selection Methods in Chinese and American Codes

作　　者：刘沛[1] 杨文健[2] 

机构地区：[1]同济大学建筑设计研究院(集团)有限公司,上海200092 [2]同济大学建筑工程系,上海200092

出　　处：《结构工程师》2013年第6期7-13,共7页Structural Engineers

摘　　要：选择合适的地震波对于结构时程分析至关重要。研究了中美抗震设计中地震波选取的方法,分别依据ASCE7-10的三维选波方法及我国抗震规范中的选波方法建立备选集,并对二者的选波结果进行比较研究。以某超高层工程实例为背景,以PEER的地震动记录为备选集,综合考虑了截止频率、场地类别、频谱特性、有效峰值、持续时间、震源机制、震中距、震级等方面的要求,按照不同方法进行选波,并对选波结果在不同规范中的适用性进行了比较研究,对于抗震设计中如何选择合适的地震动记录具有一定的指导意义。Ground motion selection is of great importance for performing time history analysis.Different methods in Chinese and American codes were studied in this paper.Ground motion sets are constructed in accordance with the methods recommended by ASCE7-10 and the ‘Code for Seismic Design of Buildings＇ from China.A super tall building model was constructed in this paper.The data from the Pacific Earthquake Engineering Research Center （PEER） was used as the initial data.The parameters including the cut-off frequency,site effects,ground motion number,spectrum characteristics,effective peak ground motion,time history scaling,duration,fault mechanism,fault distance,and magnitudes,were fully discussed.The feasibility of selecting ground motions with different methods were studied.Research results can be used as a guide in ground motion selection.

关 键 词：地震波选取 反应谱 时程分析 超高层结构 

分 类 号：TU352.11[建筑科学—结构工程]