Behaviour and design of composite steel-concrete beams subjected to combined actions

![CDATA[The behaviour of composite steel-concrete beams subjected to pure flexure and the presence of flexure and shear is fairly well understood and provisions exist in international codes of practice for their design, however in most instances the influence of the concrete slab is not included in the strength design of the composite beam in shear. Other forms of internal actions including the presence of torsion and flexure have been considered of late. These actions occur in edge beams and curved composite beams and thus are of significant practical interest. Of increasing interest has become the presence of axial force and flexure in composite beams. These internal actions need to be considered in raking beams of stadia, elevated approach spans for bridges and interchanges and in the design of integral abutment bridges. Furthermore, composite beams in floor systems in multi-storey buildings which are braced are often required to resist axial force, flexure and shear. This paper considers the effects of the presence of axial force in conventional composite beams. The effects of different forms of axial force and flexure combinations are considered in this paper. An analytical treatment, experiments and design approaches are given in this paper which is useful for structural engineers.]]