Performance of an elastoplastic model

Lade's elastoplastic work-hardening model for cohesionless soils has been used in a deformation analysis. Two passive earth pressure tests were utilized to compare analytical and experimental results. The load-deformation response and distribution of normal stresses acting on a fully instrumented wall were predicted, but a new interpretation of the work-hardening rule was necessary in order to use the model in the solution of boundary value problems. Measured and calculated values were generally in agreement. The results indicate that the model has the potential to produce reliable predictions of the behaviour of soil structures under a wide range of loading conditions.Le mod\ue8le \ue9lasto-plastique avec \ue9crouissage propos\ue9 par Lade pour les sols pulv\ue9rulents a \ue9t\ue9 utilis\ue9 dans une analyse de d\ue9formation. Deux essais de but\ue9e ont \ue9t\ue9 utilis\ue9s pour comparer les r\ue9sultats analytiques et exp\ue9rimentaux. La relation charge-d\ue9formation et la distribution des contraintes normales agissant sur un mur instrument\ue9 ont \ue9t\ue9 pr\ue9dites, mais une nouvelle interpr\ue9tation de la loi d'\ue9crouissage a \ue9t\ue9 n\ue9cessaire pour pouvoir utiliser le mod\ue8le dans la r\ue9solution de probl\ue8mes de valeurs aux limites. Les valeurs calcul\ue9es et mesur\ue9es \ue9taient g\ue9n\ue9ralement en accord. Les r\ue9sultats indiquent que le mod\ue8le est capable de fournir des pr\ue9dictions convenables du comportement des structures g\ue9otechniques dans un vaste domaine de conditions de chargement.Peer reviewed: YesNRC publication: Ye