Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

This work presents a probabilistic method for estimating earthquake-induced nonlinear slope displacements. This method is applicable to any kind of slope, embankment and earth/rockfill dam. When coupled with Probabilistic Seismic Hazard Analysis at the slope site, it produces estimates of the annual probability that a permanent deformation of the slope will be exceeded. The proposed method uses a set of 2D numerical analyses with non-linear constitutive relationships for the soil formations to establish a probabilistic relationship between one or more ground motion parameters and the permanent displacement at a specific location within the slope. The analyses, which are performed using the computer code FLAC 5.0 (Itasca, 2005), use as input a set of different recorded accelerograms that include both horizontal and vertical components. The method is applied to the Salcito landslide (Molise, Southern Italy), which was investigated in detail by Bozzano et al. (2008). The stability of the same slope is also assessed using the conventional Newmark’s method and a decoupled approach and the results are compared and contrasted with those obtained using FLAC.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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May 24th, 12:00 AM May 29th, 12:00 AM

A Probabilistic Method for the Prediction of Earthquake-Induced Slope Displacements

San Diego, California

This work presents a probabilistic method for estimating earthquake-induced nonlinear slope displacements. This method is applicable to any kind of slope, embankment and earth/rockfill dam. When coupled with Probabilistic Seismic Hazard Analysis at the slope site, it produces estimates of the annual probability that a permanent deformation of the slope will be exceeded. The proposed method uses a set of 2D numerical analyses with non-linear constitutive relationships for the soil formations to establish a probabilistic relationship between one or more ground motion parameters and the permanent displacement at a specific location within the slope. The analyses, which are performed using the computer code FLAC 5.0 (Itasca, 2005), use as input a set of different recorded accelerograms that include both horizontal and vertical components. The method is applied to the Salcito landslide (Molise, Southern Italy), which was investigated in detail by Bozzano et al. (2008). The stability of the same slope is also assessed using the conventional Newmark’s method and a decoupled approach and the results are compared and contrasted with those obtained using FLAC.