An Energy Based Excess Pore Pressure Generation Model Using Damage Potential

In this paper, application of energy-based excess pore pressure generation model proposed by Park et al. (2008) to develop an improved model for the analysis of liquefaction potential and to predict excess pore pressure (EPP) is examined through experimental and analytical investigations. For more realistic description of the dynamic responses of saturated sand undrained dynamic triaxial tests are conducted by using earthquake loading conditions with different relative density. Based on test results, the relative density is the other factor to be addressed in the procedure proposed by Park et al. (2008). The new equations of model parameters with relative density are addressed. From results of additional undrained dynamic triaxial tests, it is seen that predicted EPP generation using the model using new model parameters agrees well with measured results for earthquake loading cases.