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Numerical prediction of liquefied ground characteristics from back-analysis of lateral spreading centrifuge experiments

Abstract : In this paper, liquefied and laterally spreading soils triggered by seismic shaking are modeled as viscoplastic Bingham media characterized by two rheological parameters: the undrained residual shear strength and the Bingham viscosity coefficient. Since the precise evaluation of these two characteristics directly by appropriate in situ or laboratory experimental tests remains a very difficult task, an identification procedure is developed to assign numerically realistic values to both rheological characteristics from back-calculation of liquefaction-induced lateral spreading using centrifuge experiments. The proposed numerical procedure is applied successfully to two series of reported centrifuge tests where lateral displacements data during shaking were available. © 2013 Elsevier Ltd.
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https://hal-enpc.archives-ouvertes.fr/hal-00946116
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Soumis le : jeudi 13 février 2014 - 16:48:08
Dernière modification le : mercredi 28 octobre 2020 - 09:52:03

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S. Montassar, Patrick de Buhan. Numerical prediction of liquefied ground characteristics from back-analysis of lateral spreading centrifuge experiments. Computers and Geotechnics, Elsevier, 2013, 52 (-), pp.15/07/2014. ⟨10.1016/j.compgeo.2013.01.010⟩. ⟨hal-00946116⟩

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