DEVELOPMENT OF SPECTRAL PSEUDO-STATIC METHOD FOR DYNAMIC CLAYEY SLOPE STABILITY ANALYSIS
Fady Ghobrial, Mourad Karray, Marie-Christine Delisle, Catherine Ledoux
In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost ConferenceSession: Landslides and Slope Stability VI / Mouvements de terrain et stabilité des pentes VI
ABSTRACT: The pseudo-static method is considered the simplest approach to evaluate the stability of earth-slopes against shakes. It replaces the action of the earthquake by a constant inertial force proportional or not to the peak ground acceleration of the excitation and applies it to the potential unstable mass of the ground. However, it involves some deficiencies: it ignores the earthquake effect on shear strength and, in addition, masks the dynamic aspect of the problem (site effect, degradation of the modulus, synchronization of the movement, etc.) This study aims to examine the limitations of the pseudo-static method in order to examine the possibility of developing a more effective analysis method that allows keeping the benefits of pseudo-static method. This paper will also present the results of a case among large number of numerical simulations that were used to develop a new method of pseudo-static analysis.
RÉSUMÉ: La méthode pseudo-statique est considérée comme la méthode la plus simple pour évaluer la stabilité des pentes contre les tremblements de terre. Elle remplace l'action du tremblement de terre par une force d'inertie constante proportionnelle ou non à l'accélération de pic du sol applique à la masse possiblement instable. Toutefois, cela implique certaines lacunes: elle ignore l'effet du tremblement de terre sur la résistance au cisaillement et, en plus, masque l'aspect dynamique du problème (effet de site, dégradation du module, synchronisation du mouvement, etc.) Cette étude vise à examiner les limites de la méthode pseudo-statique afin d'examiner la possibilité de développer une méthode d'analyse plus efficace qui permet de garder les avantages de la méthode pseudo-statique. Ce document présentera également les résultats d'un cas parmi un grand nombre de simulations numériques qui ont été utilisées pour développer une nouvelle méthode d'analyse pseudo-statique.
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Fady Ghobrial; Mourad Karray; Marie-Christine Delisle ; Catherine Ledoux (2015) DEVELOPMENT OF SPECTRAL PSEUDO-STATIC METHOD FOR DYNAMIC CLAYEY SLOPE STABILITY ANALYSIS in GEO2015. Ottawa, Ontario: Canadian Geotechnical Society.
@article{526,
author = Fady Ghobrial; Mourad Karray; Marie-Christine Delisle ; Catherine Ledoux,
title = DEVELOPMENT OF SPECTRAL PSEUDO-STATIC METHOD FOR DYNAMIC CLAYEY SLOPE STABILITY ANALYSIS,
year = 2015
}
title = DEVELOPMENT OF SPECTRAL PSEUDO-STATIC METHOD FOR DYNAMIC CLAYEY SLOPE STABILITY ANALYSIS,
year = 2015
}