Seismic Demand on Column Splices in Steel Moment Frames

Abstract eng:
This study addresses concerns related to safety and economy of seismic column splices in steel moment-resisting frames, leading to a balanced seismic design of column splices. A comprehensive analytic investigation consisted of the seismic response analysis of three moment-resisting frames with 4, 9, and 20 stories, respectively, subjected to an ensemble of 20 strong ground motions. The outcomes of the study include comprehensive seismic demand on the column splice and recommended guidelines for a safe and economical design of column splices. The study concludes that the strength demand on the column splice would be on the same order as that of the smaller column when the critical beam-to-column connection reaches its expected maximum deformation capacity, and that it does not appear unreasonable for the current seismic design provisions on the column splice in special moment frames to require the column splice to develop the strength of the smaller column.

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