A macro-level global seismic damage model considering higher modes

作     者：He Zheng Ou Xiaoying Ou Jinping 

作者机构：Department of Civil Engineering Dalian University of Technology School of Civil Engineering Harbin Institute of Technology 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2014年第13卷第3期

页      面：425-436页

核心收录：

学科分类：08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：National Natural Science Foundation of China under Grant Nos.90915005,91315301 National Key Basic Research Program of China under Grant No.2013CB036305 the Program for New Century Excellent Talents in University(NCET)of the Ministry of China under Grant No.NCET-08-0096 

主　　题：seismic damage modal pushover analysis incremental dynamic analysis 

摘      要：For modal pushover analysis procedures, the model proposed by Ghobarah et al. （called the G model hereafter, 1999） has been extended to account for the contributions of transient higher modes to global seismic damage of structures excited by strong ground motions. The proposed model has physically and perfectly bridged the G model and the final softening model proposed by DiPasquale and Cakmak （1988）. Modal damage indexes corresponding to all considered vibration modes are combined by the CQC rule or the SRSS rule. Incremental dynamic analysis （IDA） is performed on three example RC frames to validate the proposed model, and a comprehensive comparison is carried out. The demonstration indicates that the proposed model is easy to implement and reflects the influence of the transition in transient vibration periods and modes on structural damage evolution. Some limitations associated with the proposed model are also addressed. Further experimental validations are needed to improve the model in the future.