Resistance of Composite Column to Compression and Bending

Abstract

Design of the composite steel-concrete columns subjected to compression and bending, according to Eurocode 4, is shown in the paper. The effects of imperfections in the axial compression are taken into account indirectly by using the relevant European buckling curves. When a composite column is subjected to combined axial compression and bending, the analysis includes an increase in bending moment due to second order effects. The verification of the column resistance to compression and bending is based on the use of interaction curve. For the cross sections of fully encased columns with the I steel sections, very practical sets of continuous interaction curves are given. The curves are constructed for different composite column dimensions, steel sections and concrete classes.