Stability Analysis of Silty-Sandy Earth Slopes Subjected to Earthquake Loading
Sahar Ismail, Riad Al Wardany, Fadi Hage Chehade
In the proceedings of: GeoRegina 2014: 67th Canadian Geotechnical ConferenceSession: Landslides and Geohazards
ABSTRACT: Geotechnical engineers have always considered slope stability analysis in evaluating land sliding risk, design of embankments and excavations, and in urban development of hilly areas. Under specific soil conditions and loading, soil slopes may undergo catastrophic failure and cause the destruction of properties and lives. This paper presents a comprehensive computer modeling study on the behavior of silty-sandy earth slopes under seismic loading using the finite difference method. The effects of the major factors that influence the behavior of soil slopes were investigated; these factors included: slope height and angle, soil cohesion, angle of internal friction and frequency of the seismic load. The influence of the model size on the results and that of boundary conditions were tested. The simulation results were presented in terms of the soil permanent displacement, the amplification of the soil particles velocity along the slope and the failure surface.
RÉSUMÉ: L™analyse de la stabilité des talus a été toujours prise en considération par les ingénieurs en géotechniques dans l'évaluation des risques de glissements de terrain, dans la conception des ouvrages en remblais et des excavations et dans le développement urbain des zones montagneuses. En effet, les pentes du sol peuvent subir une défaillance catastrophique sous certaines conditions du sol et de chargement, pouvant provoquer la destruction des propriétés et la perte des vies. Cette étude porte sur la modélisation compréhensive du comportement d™un talus limoneux -sableux sous chargement sismiques en utilisant la méthode des différences finis. Les effets des facteurs principaux qui influencent le comportement des pentes de sol ont été élucidés. Les paramètres testés sont les suivant : la taille du modèle, la hauteur et l'angle de la pente, la cohésion du sol, l'angle de frottement interne et la fréquence de la charge sismique. Les résultats des simulations ont été présentés en termes de déplacement permanent du sol, l™amplification de la vitesse des particules du sol le long de la pente et de la surface de rupture.
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Sahar Ismail; Riad Al Wardany; Fadi Hage Chehade (2014) Stability Analysis of Silty-Sandy Earth Slopes Subjected to Earthquake Loading in GEO2014. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GeoRegina14Paper398,
author = Sahar Ismail; Riad Al Wardany; Fadi Hage Chehade,
title = Stability Analysis of Silty-Sandy Earth Slopes Subjected to Earthquake Loading,
year = 2014
}
title = Stability Analysis of Silty-Sandy Earth Slopes Subjected to Earthquake Loading,
year = 2014
}