ABSTRACT
A constitutive model is developed to reproduce salient aspects associated with seismically-induced soil liquefaction. Attention is mainly focused on the deviatoric (shear) stress-strain response mechanism. Soil shear behavior during liquefaction is modeled to display a significant regain in stiffness and strength with the increase in deformation during each cycle of applied load. This behavior appears to play a major role in dictating the magnitude of shear deformations as observed in laboratory tests and manifested in acceleration records from earthquakes and centrifuge experiments.
