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Indexed by:期刊论文

Date of Publication:2018-01-01

Journal:JOURNAL OF EARTHQUAKE ENGINEERING

Included Journals:SCIE

Volume:22

Issue:8

Page Number:1479-1508

ISSN No.:1363-2469

Key Words:Earthquake Intensity Measure; High-Rise Building; Spectral Acceleration; Higher Mode; Efficiency; Sufficiency; Scaling Robustness

Abstract:With the consideration of higher modes, an attempt is made to develop a spectral-acceleration-based linear combination-type earthquake intensity measure (IM) for high-rise buildings. The modal mass participation factors are determined to take weighting coefficients. A parametric analysis on the correlation between IM and the maximum interstory drift that utilizes the bend-shear coupled continuum model yields a bilinear relationship between the optimal number of modes involved and structural fundamental period. The proposed IM and several other combination-type IMs are shown to be efficient and sufficient, while the scaling robustness of the proposed IM is more stable compared with that of fundamental-mode-based IMs.