scholarly journals DEFORMATION CONCENTRATION TO LOWER STORIES IN HIGH-RISE STEEL BUCKLING-RESTRAINED BRACED FRAMES SUBJECT TO LONG-PERIOD EARTHQUAKE GROUND MOTIONS

2013 ◽  
Vol 78 (686) ◽  
pp. 743-752
Author(s):  
Yoshikazu ARAKI ◽  
Moonjeong KIM ◽  
Atsushi NISHIMOTO ◽  
Kohju IKAGO ◽  
Koji UETANI
Keyword(s):  
Ground Motions ◽  
Braced Frames ◽  
High Rise ◽  
Earthquake Ground Motions ◽  
Long Period ◽  
Buckling Restrained Braced Frames

DAMAGE EVOLUTION SPECTRA FOR SEISMIC ANALYSIS OF HIGH-RISE BUILDINGS

2012 ◽  
Vol 06 (03) ◽  
pp. 1250021
Author(s):  
Y. B. HO ◽  
J. S. KUANG
Keyword(s):  
Damage Evolution ◽  
Seismic Analysis ◽  
Ground Motions ◽  
Time History ◽  
Tall Buildings ◽  
Response Spectra ◽  
Seismic Damage ◽  
Analysis And Design ◽  
High Rise ◽  
Earthquake Ground Motions

Seismic response spectra are amongst one of the most important tools for characterizing earthquake ground motions. In design practice, the response spectra are presented without including any load history, hence the nonlinear analysis of structures based solely on conventional earthquake response spectra is theoretically unsound, particularly for long-period or vertically irregular high-rise buildings. In this paper, a concept of seismic damage evolution is introduced and the method of analysis for characterizing the process of seismic damage to structures under earthquakes is presented. Seismic damage evolution spectra for analysis and design of high-rise buildings are then developed as an effective means of describing and simplifying earthquake ground motions. These spectra are shown to be very useful in selecting the ground motion-time history and, particularly, validating the equivalent static-load analysis and design of high-rise buildings under near-fault pulse-like ground motions. Case studies of the seismic inelastic performance of two vertically irregular, tall buildings are presented considering the seismic damage evolution spectra.

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