Effect of ground motion duration on inelastic displacement ratio of SDOF systems

作     者：Saman Yaghmaei-Sabegh Sonia Daneshgari Saman Yaghmaei-Sabegh;Sonia Daneshgari

作者机构：Department of Civil EngineeringUniversity of TabrizTabriz 51666-16471Iran 

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

年 卷 期：2023年第22卷第2期

页      面：423-439页

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0714[理学-统计学（可授理学、经济学学位）] 0701[理学-数学] 

主　　题：inelastic displacement ratio long and short duration earthquakes highly damped SDOF systems ductility 

摘      要：In this paper,the influence of ground motion duration on the inelastic displacement ratio,C_(1),of highly damped SDOF systems is studied.For this purpose,two sets of spectrally equivalent long and short duration ground motion records were used in an analysis to isolate the effects of ground motion duration on.The effect of duration was evaluated for observed values of C_(1) by considering six ductility levels,and different damping and post-yield stiffness ratios.A new predictive equation of C_(1) also was developed for long and short duration records.Results of non-linear regression analysis of the current study provide an expression with which to quantify the duration effect.Based on the average values of estimated C_(1) ratios for long duration records divided by C_(1) for a short duration set,it is concluded that the maximum difference between long and short duration records occurs when the damping ratio is 0.3 and the post-yield stiffness ratio is equal to zero.