Uncertainties of Numerical Simulation for Static Liquefaction Potential of Saturated Soils

The wind turbine foundations are subject to dynamic and static loadings. Some studies have shown that it is necessary to study the liquefaction of the soil under the foundations due to the impact of these loadings. However, in literature there are not many studies focusing on the comparison between the experimental results and numerical modeling of static liquefaction. In this study, NorSand model was used to simulate the static liquefaction behavior of soil. First, a series of experimental data were selected from the literature to study the experimental behavior leading to liquefaction of saturated Hostun sand RF. Then, these experimental data were compared to the results simulated by using NorSand model. This study focuses on the uncertainties of experimental results leading to the uncertainties of numerical modeling results. Furthermore, the numerical model integrates physical parameters related to the nature of the soil and also mathematical parameters. To modelize the static liquefaction of soil, some input parameters are needed to be determined based on the experimental tests. The corresponding uncertainties are evaluated to quantify the effect of the model parameters on the liquefaction potential soil of Hostun sand RF. An analysis of the uncertainties linked to the choice of these parameters makes it possible to reduce the difference between the experimental results and their simulation and as well the uncertainties.