Seismic Pore Water Pressure Generation Models: Numerical Evaluation and Comparison

Abstract eng:
Researchers have attempted to model excess pore water pressure via numerical modeling, in order to estimate the potential of liquefaction. The attempt of this work is numerical evaluation of excess pore water pressure models using a fully coupled effective stress and uncoupled total stress analysis. For this aim, several cyclic and monotonic element tests and a level ground centrifuge test of VELACS project [1] were utilized. Equivalent linear and non linear numerical models were used to evaluate the excess pore water pressure. Comparing the excess pore pressure buildup time histories of the numerical and experimental models showed that the equivalent linear method can predict better the excess pore water pressure than the non linear approach, but it can not concern the presence of pore pressure in the calculation of the shear strain.

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