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COMPARATIVE ANALYSIS OF SHEAR CONNECTION IN CASE OF A CONCRETE-FILLED CIRCULAR STEEL SECTION AND A CONCRETE-FILLED RECTANGULAR STEEL TUBE
Abstract
In many practical cases a composite column can be made-up as completely encased section or a concrete- filled section. In case of the composite steel-concrete members, the mechanism by which shear stresses can be transferred over the interface between the structural steel component and the encased concrete are adhesion, interface interlocking and friction, which are referred to as the natural bond. If the natural bond is not enough to achieve the required shear resistance there is the possibility of using mechanical shear connectors, the most widely used types being headed studs and the shot-fired nails. Shear connectors should be provided, based on the distribution of the design value of longitudinal shear, where this exceeds the design shear strength Rd ? . In this paper analytical methods for the evaluation of the longitudinal shear stresses in case of concrete-filled circular hollow steel tube and concrete-filled rectangular steel tube are presented. A numerical analysis for the evaluation of the longitudinal shear stresses over the interface between structural steel and concrete is also presented here. The numerical analysis can be useful for the optimal and safety design of composite steel-concrete members.
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References8
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