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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.
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.
Numerical prediction of liquefied ground characteristics from back-analysis of lateral spreading centrifuge experiments
Montassar, S. (author) / de Buhan, P. (author)
Computers and Geotechnics ; 52 ; 7-15
2013-01-31
9 pages
Article (Journal)
Electronic Resource
English
Nonlinear numerical analysis on behavior of pile in lateral spreading of liquefied ground
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