ABSTRACT

This paper focuses on the ductility demand of self-centering structures with flag-shaped (FS) hysteretic behavior under near-fault (NF) pulse-like ground motions. To this end, the general features of spectral regions for the NF pulse-like ground motion are first described. The effects of structural and ground motion characteristics on the ductility demand spectra are further carried out. The results indicate that the variation trends of the ductility demand spectra of the FS model are closely related to the spectral regions of the ground motion. Finally, a predictive model is established to evaluate the ductility demands for self-centering structures under NF pulse-like ground motions.

摘要

本文重点研究了具有旗形 (FS) 滞后行为的自定心结构在近断层 (NF) 脉冲状地震动下的延展性需求。为此，首先描述了 NF 类脉冲地震动光谱区域的一般特征。进一步研究了结构和地震动特性对延性需求谱的影响。结果表明，FS模型延性需求谱的变化趋势与地震动谱区域密切相关。最后，建立了一个预测模型来评估自定心结构在 NF 脉冲式地震动下的延性要求。