GEOSCAN, résultats de la recherche

Menu GEOSCAN


TitreDevelopment and validation of the HDI matrix method for fluid-dam interaction
AuteurMircevska, V; Nastev, M; Hristovski, V; Malla, S; Garevski, M
SourceJournal of Computing in Civil Engineering vol. 31, issue 5, 2017., https://doi.org/10.1061/(ASCE)CP.1943-5487.0000684
Année2017
Séries alt.Ressources naturelles Canada, Contribution externe 20182278
ÉditeurAmerican Society of Civil Engineers (ASCE)
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1061/(ASCE)CP.1943-5487.0000684
Mediapapier; en ligne; numérique
ProgrammeEvaluation quantitiative du risque, Géoscience pour la sécurité publique
Résumé(disponible en anglais seulement)
This paper presents the theoretical development of a practical numerical method for analysis of complex dam-reservoir interaction problems. The proposed approach takes advantage of the combination of boundary and finite element methods (BEM-FEM) for an independent analysis of two physically distinct dam structure and reservoir-foundation domains. It involves the matrix of hydrodynamic influence (HDI) based on the application of the virtual work principle to the fluid (BEM) domain to calculate the hydrodynamic forces (HDF). Equilibrium between hydrodynamic forces and absolute accelerations is obtained by repetitive solution of the dynamic equation for the FEM domain only until the Euclidean norm of the vector of residual errors at the interface nodes becomes smaller than the prescribed tolerance. The method allows effective consideration of compound wave-field of compressive and dilatational waves and wave-scattering effects for a more realistic evaluation of the interaction phenomenon. A validation procedure is presented through comparisons with analytical and numerical solutions of simple two-dimensional (2D) and three-dimensional (3D) problems. A realistic 3D example of a concrete gravity dam subjected to seismic excitation is given at the end. The method yields fast and accurate results without the necessity of time-consuming iterative computation of dependent variables in both domains. © 2017 American Society of Civil Engineers.
Résumé(Résumé en langage clair et simple, non publié)
Cet article présente le développement théorique d'une méthode numérique pratique pour l'analyse de problèmes dynamiques d'interaction barrage-réservoir et réservoir-fondation pendant de tremblements de terre. La méthode donne des résultats rapides et précis et peut être utilisée pour l'évaluation rapide des sismiques des barrages de gravité en béton.
GEOSCAN ID310853