PLASTIC MODEL FOR CONCRETE IN PLANE-STRESS STATE - II - NUMERICAL VALIDATION

A constitutive model for plain concrete proposed in Part I of this pap er is comprehensively verified by a comparison of the model prediction obtained numerically with available experimental data for the plane s tress state. At first, calibration of some model parameters is briefly discussed. Next, the model validation is made at the material point l evel for monotonic proportional load paths in the stress space coverin g all possible stress combinations, i.e., the compression-compression, compression-tension, and tension-tension regions. In the following, t he postcritical behavior in uniaxial compression and tension is thorou ghly studied. Next, the model prediction for cycling loadings is compa red with experimental data, mostly for uniaxial compression and tensio n. Finally, two examples of structural computations of reinforced conc rete (RC) deep beams for model implementation into an FEM code are pre sented. A good agreement with experimental data is found at the materi al point level. Also, the FEM computations render satisfactorily the a ctual behavior of RC deep beams.