A two-dimensional concrete constitutive model for finite element analysis of reinforced concrete structures is presented. In this model, the complete stress-strain behaviour of concrete is allowed for and secant stiffness formulation is employed so that the post-peak behaviour of reinforced concrete structures can be dealt with. The dowel action of reinforcing steel bars crossing the concrete cracks, which is generally ignored in the past, is taken into account in a smeared form in order to be consistent with the smeared crack and reinforcement model. Tests on continuous deep beams are analysed by the proposed finite element procedures. The analytical results are found to be in good agreement with the corresponding test data. It is concluded that the proposed model can provide accurate predictions of the load-deflection responses of reinforced concrete structures and the dowel action of longitudinal steel bars has a significant contribution to the strength and ductility of shear critical members.

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