Performance-based Plastic Design Of A High Rise Moment Resisting Frame With Friction Dampers
Author(s)
C. S. Patil, V. B. Patil, S. B. Kharmale
Abstract
A performance-based plastic design (PBPD) method for a steel moment resisting frame (MRF) considering a pre-selected yield mechanism and uniform target drift has been recently proposed. This method when adopted to design high rise MRF for relatively high target drift exhibits maximum residual inter-storey drift demands in excess of target plastic drift, which is perceptible for a building’s occupants and could cause human discomfort. The use of an energy dissipation device such as a friction damper for establishing global drift limits compatible with the same rate of peak inter-storey drift limits is proposed for PBPD of high rise MRF. The PBPD design case study of a 21-storey MRF with the use of friction dampers in order to achieve a uniform target drift compatible with peak inter-storey drift limits is presented in this paper. The analytical validation of this design through nonlinear static pushover analysis (NSPA) and nonlinear time history analysis (NTHA) under selected strong motion records justified the use of friction dampers to achieve performance objective in terms of uniform target drift.
Keywords
performance-based plastic design (PBPD), inter-storey drift, friction dampers, nonlinear static pushover analysis (NSPA), nonlinear time history analysis (NTHA)
Related Book
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