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Three-dimensional stability charts for slopes based on limit analysis methods

journal contribution
posted on 06.12.2017, 00:00 by An-Jui Li, R Merifield, A Lyamin
This paper uses finite element upper and lower bound limit analysis to produce chart solutions for three-dimensional (3D) natural slopes for both short- and long-term stability. The presented chart solutions are convenient tools that can be used for preliminary design purposes. The rigorous limit analysis results in this paper were found to bracket the true factor of safety within ±10% or better, which can be used as a benchmark for the solutions from other methods. The depth of the slip surfaces is observed to be generally shallow for most analyzed cases, particularly for the long-term slope stability problem. In addition, it was found that using a two-dimensional (2D) analysis may lead to significant differences in estimating safety factors, which can differ by 2%–60% depending on the slope geometry and soil properties. Therefore, great care and judgement are required when applying 2D analyses to 3D slope problems.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

47

Issue

12

Start Page

1316

End Page

1334

Number of Pages

19

eISSN

0008-3674

ISSN

1208-6010

Location

Canada

Publisher

Canadian Science Publishing

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Centre for Geotechnical and Materials Modelling; Faculty of Engineering and Built Environment; Faculty of Sciences, Engineering and Health; School of Engineering; TBA Research Institute;

Era Eligible

Yes

Journal

Canadian geotechnical journal.

Usage metrics

CQUniversity

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