RELATIONS BETWEEN GROUND MOTION INTENSITY MEASURES AND STORY DRIFT RATIO OF SUPER HIGH-RISE BUILDINGS
Ground motion intensity measure (IM) is an important issue for nonlinear time-history analysis in earthquake engineering.A rational IM can be helpful to reduce the dispersion of structural seismic responses.Many researches have been conducted on the selection of (I)Ms for normal structures in the last decade,while little work has been reported on the selection of (I)Ms for super high-rise buildings.Therefore,this paper focuses on the comparison and selection of some existing (I)Ms for the seismic design of super high-rise buildings.Firstly,a simplified model for super high-rise buildings based on the flexural-shear coupling beam model is proposed and its rationality and accuracy is verified by a refined finite element (FE) model of an actual super high-rise building-the Shanghai Tower.And based on the proposed simplified model and ground motions suggested by FEAM 695,the correlation and dispersion between some existing (I)Ms (e.g.,PGA,PGV,PGD,Sa(T1)、Sa(T1)) and the maximum story drift ratio (θmax) at different fundamental periods from 1s to 10s are discussed and compared.The analytical results indicate that PGV has the best correlation and the smallest dispersion with the maximum story drift ratio (θmax) of super high-rise buildings.Hence,PGV can be suggested as the (I)M for seismic safety design for super high-rise buildings.
Super high-rise building intensity measure simplified model correlation coefficient
Xiao Lu Xinzheng Lu Lieping Ye Wankai Zhang
Department of Civil Engineering, China Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University, Beijing 100084, P.R.China
国际会议
The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)
武汉
英文
1066-1071
2012-11-17（万方平台首次上网日期，不代表论文的发表时间）