Seismic design and constructability of RCS special moment frames

This paper presents an evaluation in terms of constructability, cost, and seismic performance of an alternative structural system for high seismic risk zones made of composite reinforced concrete-steel (RCS) special moment-resisting frames. Interior beam-column joints and the effects of a reinforced concrete slab on composite metal decking are investigated. The major issues discussed are related to seismic design philosophy and constructability of a three-dimensional RCS special moment frame system for low-rise and mid-rise construction. The key conclusion from this work is that the proposed RCS frame system has advantages over steel frame systems in high seismic risk zones in terms of having a cost-effective construction process and possessing certain stable hysteretic performance during inelastic excursions.