Investigation of Stress-Strain Models for Confinement of Concrete by Welded Wire Fabric

Various analytical models available in the literature for the confinement of concrete by conventional rectilinear ties and welded wire fabric are studied. These models are applied to the specimens tested by the authors as well as by other investigators to predict the results. Experimental results are compared with results predicted by various models. It is concluded that none of the analytical models could accurately predict the stress-strain curves for the full range of experimental data considered in this study. Most of the models were able to predict the peak strength but failed to predict satisfactorily the associated strain and the stress-strain curves. The predictions of the Akiyama et al. were generally in closest agreement with the experimental results. Since this model incorporates almost all the parameters of confinement