The cross-section curvature ductility ratio for R.C inequiaxial T-shaped , L-shaped and cross-shaped columns is calculated by numerical method．On the basis of calculation results, the influence of design parametrs(axial compression ratio,content of longitudinal reinforcement,content of stirrup,grade of concrete strength and grade of longitudinal reinforcement) on the cross section curvature ductility ratio is analyzed.The relationships between cross-section curvature ductility ratio versus the parameters are presented.It's helpful for the evaluation of aseismatic performance on R.C inequiaxial T-shaped ,L-shaped and cross-shaped columns.
