Analysis of L Shaped RC Columns Subjected to Bending with Axial Load Using Moment - Curvature Relationship

This paper aims at analyzing the behavior of uni-axially and bi-axially eccentrically loaded columns of L shaped section coupled with axial loading using an analytical method in developing moment-curvature relationships. The conventional method of analyzing rectangular and circular columns subjected to bending using interaction diagrams is presented with Design aid for Reinforced concrete structures, SP-16. The applicability of this method with suitable modifications to L shaped columns is studied, this study provides an insight to the moment carrying capacity and curvature of L shaped columns, the moment-curvature relation was also compared with that of ETABS to estimate the possible deviations. The moment-curvature relations for columns with grade of concrete M20, M25 and M30 with grade of steel Fe 415 are presented, increase in grade of concrete, substantially reduces the ductility of column, though it results in an increased moment carrying capacity also results demonstrate that the moment carrying capacity of L shaped column is underestimated in ETABS.