Phase relations between dynamic lateral earth pressures and acceleration of retaining walls

Abouzar Sadrekarimi

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Laboratory Testing

ABSTRACT: Phase differences among seismic earth pressure fluctuations acting on different elevations of a retaining wall and wall acceleration are important in pseudo-static computational methods. In this paper these phase relations are examined through 6 shaking table tests on model retaining walls. Wall acceleration and the fluctuations of dynamic lateral earth pressures on two different elevations of the wall are compared. Comparisons show that the phase difference between the acceleration of the wall and the dynamic lateral earth pressure fluctuations depends on wall acceleration. Such behaviour would cause a wall to either rock or move uniformly back-and-forth during earthquake shaking.

RÉSUMÉ: Les différences de phase entre les fluctuations de pression des terres sismiquesagissant sur des hauteurs différentes d'un mur de soutènement et d'accélération mursont importants dans pseudo-statique des méthodes de calcul. Dans cet article, cesrelations de phases sont examinées à 6 essais sur table vibrante sur les murs de soutènement modèle. Wall accélération et les fluctuations de la dynamique des pressions latérales des terres sur deux niveaux différents de la paroi sont comparées.Les comparaisons montrent que la différence de phase entre l'accélération de la paroilatérale et la dynamique des fluctuations de pression de terre dépend de l'accélérationmur. Un tel comportement serait de provoquer un mur de roche ou de déplacer de manière uniforme de va-et-vient lors de secousses sismiques.

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Cite this article:
Abouzar Sadrekarimi (2011) Phase relations between dynamic lateral earth pressures and acceleration of retaining walls in GEO2011. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GEO11Paper137,author = Abouzar Sadrekarimi ,title = Phase relations between dynamic lateral earth pressures and acceleration of retaining walls,year = 2011}