Under cyclic loading, the structural performance of reinforced concrete (RC) beam-column connections is significantly affected by the bond-slip of beam re-bars. In the present study, a bond-slip model was developed to evaluate bond-slip of beam re-bars in beam-column joints. The prediction of the proposed model agreed well with the bond strength degradation and bond-slip in the beam-column joints.

Under cyclic loading, the shear capacity of reinforced concrete (RC) beam-column connections is significantly decreased by the joint bond-slip and shear cracking as deformation increases. In the present study, Joint shear strength model on the basis of bond-slip was developed to evaluate deformability at the joint shear failure.