2005 Volume 2005 Issue 802 Pages 802_1-802_14
Shear strength degradation and the decline point on the P-δ curve are some of important factors to assess the failure mode and ductility of reinforced concrete columns. The present paper deals with shear degradation accompanying cyclic loading, concrete crack angle and ductility evaluation of reinforced concrete columns by experiments and analyses. In the first shear strength caused by degradation of concrete contribution and crack angle using The Modified Compression Field Theory are examined and calculated. A discussion focuses on degradation model of shear strength and crack angle far beyond the yield point of the main reinforcement. Then failure modes and ductility factors are estimated by comparing deformation analysis and the degrading capacity of shear strength.
