Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2018-01-01

Journal: JOURNAL OF EARTHQUAKE ENGINEERING

Included Journals: SCIE

Volume: 22

Issue: 8

Page Number: 1479-1508

ISSN: 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.