finite element instability analysis of the steel joist of continuous composite beams with flexible shear connectors

Composite steel/concrete beams may buckle in hogging bending regions. as the top flange of i-beam in that arrangement is restricted from any translational deformation and twist, the web will distort during buckling presenting a phenomenon often described as restricted distortional buckling. there are limited studies available in the literature of restricted distortional buckling of composite steel/concrete i-beams subjected to negative or hogging bending. there is none however that includes the effect of partial shear interaction. in this paper, finite element models for in-plane analysis and out-of-plane buckling of continuous composite i-beams including the effects of partial shear interaction are presented.