Abstract
Recent evidence indicates that partially saturated conditions may exist below ground water level. Laboratory test data have shown that the seismic resistance of sands to liquefaction increases as saturation decreases. This paper presents the results of an investigation on partial saturation effects on liquefiable ground response. Using a coupled stress-flow dynamic analysis procedure the ground response to seismic shaking has been analyzed in terms of excess pore pressure and deformations. The results indicate that displacements of a slope under partial saturation condition can be larger than that of fully saturated conditions when a low permeability sub-layer is present.
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