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Article: On two definitions of the factor of safety commonly used in the finite element slope stability analysis

TitleOn two definitions of the factor of safety commonly used in the finite element slope stability analysis
Authors
KeywordsCritical Slip Line
Factor Of Safety
Finite Element Method
Slope Stability Analysis
Issue Date2006
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/compgeo
Citation
Computers And Geotechnics, 2006, v. 33 n. 3, p. 188-195 How to Cite?
AbstractIn the 2D finite element slope stability analysis, there are two commonly used definitions on the factor of safety. The first is the strength reserving definition, which defines the factor of safety as the factor by which the shear strength of the soil would have to be divided to bring the slope into the state of critical equilibrium. The second is the overloading definition, which defines the factor of safety as the ratio of total resisting forces to total driving forces along a certain slip line. This study formulates a uniform initial value problem of ordinary differential equations for locating the critical slip lines corresponding to the two definitions and proposes a prediction-correction procedure for the initial value problem. Through solving the relevant initial value problem, the critical slip line can be located without specifying its shape and location. It is also demonstrated that while the finite element method is utilized for analyzing slope stability, the critical slip lines based on the overloading definition might be for the most part shallower than those by the strength reserving definition and the conventional limit equilibrium methods, and hence the design based on the overloading definition might be precarious. © 2006 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/150363
ISSN
2015 Impact Factor: 1.705
2015 SCImago Journal Rankings: 2.033
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZheng, Hen_US
dc.contributor.authorTham, LGen_US
dc.contributor.authorLiu, Den_US
dc.date.accessioned2012-06-26T06:03:53Z-
dc.date.available2012-06-26T06:03:53Z-
dc.date.issued2006en_US
dc.identifier.citationComputers And Geotechnics, 2006, v. 33 n. 3, p. 188-195en_US
dc.identifier.issn0266-352Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/150363-
dc.description.abstractIn the 2D finite element slope stability analysis, there are two commonly used definitions on the factor of safety. The first is the strength reserving definition, which defines the factor of safety as the factor by which the shear strength of the soil would have to be divided to bring the slope into the state of critical equilibrium. The second is the overloading definition, which defines the factor of safety as the ratio of total resisting forces to total driving forces along a certain slip line. This study formulates a uniform initial value problem of ordinary differential equations for locating the critical slip lines corresponding to the two definitions and proposes a prediction-correction procedure for the initial value problem. Through solving the relevant initial value problem, the critical slip line can be located without specifying its shape and location. It is also demonstrated that while the finite element method is utilized for analyzing slope stability, the critical slip lines based on the overloading definition might be for the most part shallower than those by the strength reserving definition and the conventional limit equilibrium methods, and hence the design based on the overloading definition might be precarious. © 2006 Elsevier Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/compgeoen_US
dc.relation.ispartofComputers and Geotechnicsen_US
dc.subjectCritical Slip Lineen_US
dc.subjectFactor Of Safetyen_US
dc.subjectFinite Element Methoden_US
dc.subjectSlope Stability Analysisen_US
dc.titleOn two definitions of the factor of safety commonly used in the finite element slope stability analysisen_US
dc.typeArticleen_US
dc.identifier.emailTham, LG:hrectlg@hkucc.hku.hken_US
dc.identifier.authorityTham, LG=rp00176en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.compgeo.2006.03.007en_US
dc.identifier.scopuseid_2-s2.0-33745636520en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33745636520&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume33en_US
dc.identifier.issue3en_US
dc.identifier.spage188en_US
dc.identifier.epage195en_US
dc.identifier.isiWOS:000239485100005-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridZheng, H=7403440940en_US
dc.identifier.scopusauthoridTham, LG=7006213628en_US
dc.identifier.scopusauthoridLiu, D=15022683400en_US

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