MOMENT CURVATURE OF REINFORCED CONCRETE BEAMS USING VARIOUS CONFINEMENT MODELS AND EXPERIMENTAL VALIDATION

This paper presents a procedure for finding the analytical Moment Curvature behaviour of statically determinate reinforced concrete beams, taking into consideration, the confinement offered by shear reinforcement to concrete in compression zone. Six selected confinement models reported in literature in the last decade are used as a stress block for confined concrete for generating the complete analytical Moment Curvature behaviour. The Moment Curvature behaviour obtained using the selected confinement models are compared with experimental results. In general it is observed that the results obtained from the selected models were close to the experimental values. However, it is observed that the analytical values obtained using Mendis and Cusson model are closer to the experimental results when compared to that obtained using the other models.