Modeling of the composite action in fully restrained beam‐to‐column connections: implications in the seismic design and collapse capacity of steel special moment frames

摘要: SUMMARY: This paper investigates the effect of composite action on seismic performance steel special moment frames (SMFs) through collapse. A rational approach is first proposed to model hysteretic behavior fully restrained beam-to-column connections, with reduced beam sections. Using modeling recommendations, a system-level analytical study performed archetype buildings that utilize perimeter SMFs, different heights, designed in West-Coast USA. It shown average, may enhance SMFs. However, bottom story collapse mechanisms be triggered leading rapid deterioration global strength Because action, excessive panel zone shear distortion also observed interior joints SMFs strong-column/weak-beam ratios larger than 1.0. demonstrated when are 1.5, (i) typically avoided; (ii) tolerable probability achieved return period 50years; and (iii) controlled yielding while reducing required number welded doubler plates joints. © 2014 John Wiley & Sons, Ltd.