Strength Reduction Factor for Performance-based Design of Plane CFT-MRFs

摘要

Major findings of this study are as follows:(1) The q factor expression proposed here corresponds tothe first yielding in the frame and thus, neither pushoveranalysis nor estimation of the overstrength factor is needed.This important feature enables both the rapid seismicassessment of existing structures and the direct deformationcontrolledseismic design of new ones.(2) Reliable estimates of seismic displacements, drift andductility demands can be provided by the proposed formulae.Compared with the procedure adopted by current seismicdesign codes, it was found more efficient for performancebasedseismic design and/or assessment of regular plane CFTMRFs.