Paper Details

A composite section is made up of a concrete slab attached to a steel beam by means of shear connectors.Under positive bending moment, part of the slab will act as the flange of the composite beam resisting the longitudinalcompression. In this paper a three-dimensional linear finite element analysis, using ANSYS program, is employed toevaluate and determine the actual effective slab width of a partially composite steel-concrete beam with variable degreesof partial interaction.Eight node isoparametric elements have been used to model the reinforced concrete slab, while the steel reinforcing barsare modeled as axial member (bar element) connecting opposite nodes between brick element with full bond assumption.The steel beam is modeled by four-node isoparametric shell elements, a spar bar element which has two end nodes withthree translation degrees of freedom at each end has been used to model the shear connectors to resist uplift. The effectof dowel action of shear connector through the interface between top flange of the steel girder and concrete slab ismodeled by combin element; the interface between two surfaces is modeled by contact element.From analysis results, the stresses of concrete and steel are compared with stresses obtained from T-beam theory forvariable degrees of partial interaction. From results obtained, it was found that, the partial interaction of compositebeams is a minor effect on effective slab width.

Ashour R. Dawood, Mohannad H. Al-Sherrawi, “The Effective Width of a Partially Composite Steel-Concrete Beam”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 5, Issue 11, pp. 24-31, November 2018.