Effects of spatial variability on soil liquefaction: some design recommendations

R. Popescu, J. H. Prevost, G. Deodatis
1997 Geotechnique  
The effects of spatial variability of soil properties on the behaviour of saturated soil deposits subjected to seismic excitation are analysed, and their implications for geotechnical design are discussed. A Monte Carlo simulation methodology, combining digital generation of non-Gaussian stochastic vector ®elds with dynamic, nonlinear ®nite element analyses, is used for that purpose. The proposed procedure is applied to assess the soil liquefaction potential, which is found to be considerably
more » ... o be considerably affected by the inherent spatial variability of soil properties. Parametric studies, involving the degree of soil liquefaction and the frequency content of the seismic input, are performed. Finally, a characteristic percentile value of soil strength, which will predict a response equivalent to that provided by the more expensive Monte Carlo simulations, is proposed for use in deterministic design.
doi:10.1680/geot.1997.47.5.1019 fatcat:7ictxmg26nfwfpg7uuieiunf3i