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Slope stability analysis for fill slopes using finite element limit analysis

conference contribution
posted on 2015-01-01, 00:00 authored by Kelvin Lim, An-Jui Li, A Lyamin, M Cassidy
This paper investigates the stability of fill slopes often found in embankment cases where frictional fill materials are placed on purely cohesive undrained clay with increasing strength. By using finite element upper and lower bound limit analysis for this investigation, the limit load can be truly bounded. It is known that two-dimensional analysis yields a more conservative result due to plain strain condition when compared to three-dimensional analysis. Therefore, this paper will focus on three-dimensional (3D) slope stability analysis and for comparison purposes two-dimensional analysis results will be employed. In fact, the final results are presented in the form of comprehensive
chart solutions for the convenience of practicing engineers during preliminary slope design. The failure mechanism will also be discussed in order to further illustrate the situation during failure. It should be highlighted that the failure mechanisms are obtained through the numerical method itself and no prior assumptions are required, therefore, are more realistic and able to provide a better understanding
for the slope failure surfaces.

History

Event

European Conference on Soil Mechanics and Geotechnical Engineering (16th : 2015 : Edinbugh, Scotland)

Pagination

1597 - 1602

Publisher

ICE (Institution of Civil Engineers)

Location

Edinburgh, Scotland

Place of publication

London, Eng.

Start date

2015-09-13

End date

2015-09-17

ISBN-13

9780727760678

Language

eng

Publication classification

E Conference publication; E1 Full written paper - refereed

Copyright notice

2015, ICE

Title of proceedings

ECSMGE 2015 : Geotechnical Engineering for Infrastructure and Development : Proceedings of XVI European Conference on Soil Mechanics and Geotechnical Engineering

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