PERFORMANCE-BASED SEISMIC ANALYSIS OF EMBANKMENTS WITH DSM GRID-TYPE FOUNDATION IMPROVEMENT
Bogart Mendez, Vicki Nguyen, Sachin Patel
In the proceedings of: GeoVirtual 2020: 73rd Canadian Geotechnical ConferenceABSTRACT: A performance-based methodology focused on the seismic performance of a structure supported by improved ground based on Deep Soil Mixing (DSM) grids is proposed in this paper. Under a performance-based approach, the design of the DSM grid is conducted such that the target performance of the superstructure is achieved, thus not necessarily imposing the no-liquefaction condition on the enclosed soil within the DSM grid. This concept is explored for the case of embankments supported on square DSM grids. Three-dimensional, non-linear numerical analyses are conducted for a generic embankment founded on DSM-improved ground. The variability of the DSM strength on the embankment performance is evaluated for a given grid configuration. Conclusions and recommendations for this type of analysis are provided.
RÉSUMÉ: Une méthodologie basée sur les performances et centrée sur les performances sismiques d'une structure supportée par un sol amélioré basé sur des grilles du mélange profond des sols (DSM) est proposée dans cet article. Selon une approche basée sur les performances, la conception de la grille DSM est réalisée de telle sorte que la performance objective de la superstructure soit atteinte, n'imposant donc pas nécessairement la condition de non-liquéfaction sur le sol fermé à l'intérieur de la grille DSM. Ce concept est exploré pour le cas de remblais supportés sur des grilles DSM carrées. Des analyses numériques non linéaires en trois dimensions sont effectuées pour un remblai générique fondé sur un sol amélioré par DSM. La variabilité de la résistance du DSM sur les performances du remblai est évaluée pour une configuration de grille donnée. Des conclusions et des recommandations pour ce type d'analyse sont proposées.
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Mendez, Bogart, Nguyen, Vicki, Patel, Sachin (2020) PERFORMANCE-BASED SEISMIC ANALYSIS OF EMBANKMENTS WITH DSM GRID-TYPE FOUNDATION IMPROVEMENT in GEO2020. Ottawa, Ontario: Canadian Geotechnical Society.
@article{Mendez_GEO2020_280,
author = {Mendez, Bogart}, {Nguyen, Vicki}, {Patel, Sachin},
title = PERFORMANCE-BASED SEISMIC ANALYSIS OF EMBANKMENTS WITH DSM GRID-TYPE FOUNDATION IMPROVEMENT ,
year = 2020
}
title = PERFORMANCE-BASED SEISMIC ANALYSIS OF EMBANKMENTS WITH DSM GRID-TYPE FOUNDATION IMPROVEMENT ,
year = 2020
}