The Study of the Effect of State Parameter in Constitutive Models using Centrifuge Test Results

In this study, the effect of state parameter in elasto-plastic constitutive models on improvement of predicting sand behavior was studied, using DIANA-SWANDYNE II program. The centrifuge test results, which were obtained in VELACS workshop, were used in this study. The mechanical behaviors of centrifuge models under earthquake loading was predicted by using Pastor & Zienkiewicz Mark III constitutive model and the modified model and were compared with experimental results. The results show that the use of current state parameter can have a significant effect on improvement of predicting deformation, water pore pressure and acceleration caused by earthquake loading in soil structures.