ABSTRACT: The stability of slopes under seismic conditions is a topic of remarkable interest in geotechnical engineering practice. Stability analysis is usually performed by means of the pseudostatic limit equilibrium approach which provides a factor of safety on shear strength. However, under seismic loading conditions, displacements represent a more suitable criterion for stability and serviceability evaluation. In this paper, by assuming a circular failure mechanism and following Newmark’s sliding block model, a dynamic response analysis in undrained conditions is presented. The proposed model takes into account undrained shear strength degradation occurring due to cyclic loading, soil non linearity and pore pressure build-up during earthquake shaking. A parametric analysis was carried out for several geotechnical and geometrical conditions considering both harmonic and real accelerograms.

Seismic response of clay slopes

CASCONE, Ernesto;
1998

Abstract

ABSTRACT: The stability of slopes under seismic conditions is a topic of remarkable interest in geotechnical engineering practice. Stability analysis is usually performed by means of the pseudostatic limit equilibrium approach which provides a factor of safety on shear strength. However, under seismic loading conditions, displacements represent a more suitable criterion for stability and serviceability evaluation. In this paper, by assuming a circular failure mechanism and following Newmark’s sliding block model, a dynamic response analysis in undrained conditions is presented. The proposed model takes into account undrained shear strength degradation occurring due to cyclic loading, soil non linearity and pore pressure build-up during earthquake shaking. A parametric analysis was carried out for several geotechnical and geometrical conditions considering both harmonic and real accelerograms.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11570/3527
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