A numerical model based on a recent non-associative elasto-plastic model for sands (the Severn--Trent model), implemented in an FEM code, is presented. This model, which simultaneously takes into account the effects of the relative density DR and the mean effective stress level p reproduces the stress--strain behaviour of granular materials with reasonable accuracy. The constitutive relations are arranged in the form of a forward stress integration algorithm in a new subroutine. The algorithm is validated by comparison with the experimental results of several triaxial tests; the computed and experimental results are generally in good agreement for both loose and dense sands. Finally, the settlement of full-scale shallow foundations resting on a sand deposit is analysed; the numerical results obtained are very close to the experimental data.
|Titolo:||Evaluation of shallow foundation settlements by an elasto-plastic kinematic-isotropic hardening numerical model for granular soil|
|Data di pubblicazione:||2008|
|Citazione:||Evaluation of shallow foundation settlements by an elasto-plastic kinematic-isotropic hardening numerical model for granular soil / ABATE G; CARUSO C; MASSIMINO M.R.; MAUGERI M. - In: GEOMECHANICS AND GEOENGINEERING. - ISSN 1748-6025. - 3:1(2008), pp. 27-40.|
|Appare nelle tipologie:||1.1 Articolo in rivista|