EXPERIMENTAL STUDIES ON CONFINED STEEL CONCRETE COMPOSITE BEAMS UNDER PURE BENDING

M.Arvind, Bollineni Nithin Krishna, B.Sathish Kumar, K.Shanmuga Priya

Abstract: An experimental investigation of the ultimate strength and behaviour of a new type of composite beam called CSCC beam (Confined Steel Concrete Composite Beam) is a concrete beam shuttered with cold formed steel sheet which acts as a composite beam by means of shear connectors and bracings. Stud shear connectors are used to take up the bond between sheet and concrete. The passive confinement by the cold formed sheet in the sides and bottom influences the strength and ductility of the system. These beams are provides very good confinement of concrete. Totally eight CSCC beams are tested and the entire behaviour of the beams are monitored to predict the physical response of the beams under three different types loading such as pure bending, pure torsion and combined bending and torsion. Two point loading was obtained for pure bending. The deformation criteria (deflection, moment and flexural rigidity) are also included in the investigation throughout the entire load history experimentally. The results obtained by the experimental values which are found to be in good agreement.

Keywords: composite beams; pure bending

DOI: https://doi.org/10.15623/ijret.2015.0402042