A critical appraisal of some rd relationships for liquefaction analyses in Eastern Canada with the simplified procedure
Didier Perret, Priscilla Desgagnés, Sophie Pelletier
In the proceedings of: GeoMontréal 2013: 66th Canadian Geotechnical Conference; 11th joint with IAH-CNCSession: Geohazards II
ABSTRACT: In the simplified procedure developed by Seed and Idriss (1971) for estimating the potential for liquefaction triggering, horizontal cyclic shear stresses induced by seismic loading are determined from peak ground surface acceleration and the shear stress reduction coefficient rd. The different relationships proposed in the literature for calculating this coefficient have been established for soil profiles and strong motion records mostly from Western North America. In Eastern Canada, the simplified procedure tends to overestimate shear stresses considerably. We show that this discrepancy is related to the soil and ground motion characteristics in Eastern Canada.
RÉSUMÉ: Dans la procédure simplifiée développée par Seed et Idriss (1971) pour estimer le potentiel de liquéfaction, les contraintes de cisaillement horizontales induites par le chargement sismique sont déterminées à partir de l™accélération maximale à la surface des terrains et du coefficient de réduction de contraintes, rd. Les différentes relations proposées dans la littérature pour calculer ce coefficient ont été déterminées pour des conditions de sol et de chargement sismique caractéristiques de l™ouest de l™Amérique du Nord. Dans l™est du Canada, la procédure simplifiée tend à surestimer fortement les contraintes de cisaillement. Nous montrons que cet écart est dû aux caractéristiques des sols et des mouvements sismiques dans l™est du Canada.
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Didier Perret; Priscilla Desgagnés; Sophie Pelletier (2013) A critical appraisal of some rd relationships for liquefaction analyses in Eastern Canada with the simplified procedure in GEO2013. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GeoMon2013Paper495,
author = Didier Perret; Priscilla Desgagnés; Sophie Pelletier,
title = A critical appraisal of some rd relationships for liquefaction analyses in Eastern Canada with the simplified procedure ,
year = 2013
}
title = A critical appraisal of some rd relationships for liquefaction analyses in Eastern Canada with the simplified procedure ,
year = 2013
}