A spectral-velocity-based combination-type earthquake intensity measure for super high-rise buildings

• Published in: Bulletin of earthquake engineering Vol. 16; no. 2; pp. 643 - 677
• Main Authors: Zhang, Yantai, He, Zheng, Yang, Youfu
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-02-2018; Springer Nature B.V
• Subjects: Civil Engineering; Earth and Environmental Science; Earth Sciences; Earthquake construction; Earthquakes; Environmental Engineering/Biotechnology; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Ground motion; High rise buildings; Hydrogeology; Original Research Paper; Robustness; Scaling; Seismic activity; Seismic engineering; Spectra; Spectral sensitivity; Structural Geology; Velocity; Vibration; Vibration mode; Earthquake intensity measure; Super high-rise building; Sufficiency; Spectral velocity; Efficiency; Scaling robustness; Higher vibration mode
• ISSN: 1570-761X; 1573-1456
• DOI: 10.1007/s10518-017-0224-5

A spectral-velocity-based combination-type ground motion intensity measure (IM), which is inspired by the superior sensitivity of spectral velocity to structural response compared with other two spectral quantities, is proposed for super high-rise building structures with the consideration of the characteristics of ground motions and structures themselves. Two super high-rise buildings with typical frame/core-tube/outrigger lateral resisting system and a wide range of structural height (H = 258 m~660 m) are deliberately selected to identify the correlation between the maximum inter-story drift ratio and nineteen IMs developed in recent decade together with the proposed IM, with sixty chosen far-field and near-field pulse-like ground motions. With the suggested optimal number of lower vibration modes and corresponding combination factors, the efficiency, sufficiency and the scaling robustness of the proposed IM is further demonstrated. In addition, the relative sufficiency measures of other IMs with respect to the proposed IM are investigated. The results from the study indicate that, the proposed IM is believed, from the standpoint of efficiency, sufficiency, relative sufficiency measure and scaling robustness, to be a more specialized and desirable tool for super high-rise buildings, either for far-field or near-field ground motions.