Cet article présente une histoire de cas concernant la construction du barrage de Pappadai en Italie. Le barrage a été construit en enrochements avec une membrane amont bitumineuse et repose sur des fondations d'argile raide. L'instrumentation du barrage et du sol de fondation fournit des données détaillées des schémas de déformation et des changements de pression interstitielle durant la construction du barrage et durant les sept années subséquentes. On a réalisé des analyse en déformation plane bidimensionnelles en utilisant des modèles constitutifs relativement simples pour le comportement du sol et de l'enrochement afin de reproduire cette interaction sol-structure de sorte que les effets de la mise en eau du réservoir puissent être étudiés. Cet article montre qu'un choix judicieux des paramètres et la compréhension du comportement mécanique des sols in situ peuvent produire des prédictions satisfaisantes de l'interaction globale sol-structure.
This paper presents a case history for the construction of the Pappadai dam in Italy. The dam is constructed from rockfill, with an upstream bituminous membrane, and is built on stiff clay foundations. The instrumentation of the dam and of the foundation soil provides detailed insight into the deformation patterns and pore-water pressure changes during dam construction and for the subsequent 7 years. Two-dimensional plane-strain finite element analyses, using fairly simple constitutive models for soil and rockfill behaviour, were performed to reproduce the soil-structure interaction so that the effects of reservoir impoundment, which has yet to be carried out, could be investigated. The paper shows that a careful choice of parameters and an understanding of the mechanical behaviour of the in situ soils can result in satisfactory predictions of the overall soil-structure interaction.
Numerical analysis and monitoring of Pappadai dam
Lollino P;
2005
Abstract
This paper presents a case history for the construction of the Pappadai dam in Italy. The dam is constructed from rockfill, with an upstream bituminous membrane, and is built on stiff clay foundations. The instrumentation of the dam and of the foundation soil provides detailed insight into the deformation patterns and pore-water pressure changes during dam construction and for the subsequent 7 years. Two-dimensional plane-strain finite element analyses, using fairly simple constitutive models for soil and rockfill behaviour, were performed to reproduce the soil-structure interaction so that the effects of reservoir impoundment, which has yet to be carried out, could be investigated. The paper shows that a careful choice of parameters and an understanding of the mechanical behaviour of the in situ soils can result in satisfactory predictions of the overall soil-structure interaction.File | Dimensione | Formato | |
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