Design Model of Joints for RCS Frames

A new strength model is proposed for composite beam-column joints in RCS frames consisting of steel beams and reinforced concrete columns. Based on connection subassemblage test data, the proposed model builds upon guidelines previously developed by the ASCE Committee on Composite Construction. The proposed model employs modifications to address unique failure modes and stress transfer mechanisms in the joints, and extends the scope of the earlier ASCE Guidelines to address a broader set of connection details. Comparisons between test data and calculated strengths demonstrate the accuracy of the proposed model.