Analysis of maximum arching conditions in active plane-strain trapdoors in sand

dc.contributor.authorOsman, Ashraf S.
dc.contributor.authorJacobsz, Schalk Willem
dc.contributor.emailsw.jacobsz@up.ac.zaen_ZA
dc.date.accessioned2019-06-10T14:40:21Z
dc.date.issued2019-09
dc.description.abstractThe trapdoor problem is a useful model to understand the stress distribution around geo-structures. This paper focuses on evaluating the conditions of maximum arching (minimum loads on trapdoors) developing during the lowering of plane-strain active trapdoors in cohesionless granular materials. A parametric study using finite element analysis has been performed to investigate various factors affecting the maximum arching conditions in active trapdoors, with a particular focus on the effect of soil dilatancy. The paper also presents rigorous upper bound limit analysis solutions. Previously published solutions dealing with soil non-associativity have been discussed and compared with the finite element results. The finite element analysis shows that using a Mohr Column model with the associative flow rule and reduced strength parameters, overestimates the load reduction on trapdoors compared with a non-associative model with full soil strength parameters.en_ZA
dc.description.departmentCivil Engineeringen_ZA
dc.description.embargo2020-09-01
dc.description.librarianhj2019en_ZA
dc.description.sponsorshipThe UK Royal Academy of Engineering (Grant NRCP1516/1/42) and the UK Economic and Social Science Research Council (Grant ES/N013905/1) as part of the Newton Fund scheme.en_ZA
dc.description.urihttps://www.elsevier.com/locate/compgeoen_ZA
dc.identifier.citationOsman, A.S. & Jacobsz, S.W. 2019, 'Analysis of maximum arching conditions in active plane-strain trapdoors in sand', Computers and Geotechnics, vol. 113, art. 103089, pp. 1-11.en_ZA
dc.identifier.issn0266-352X (print)
dc.identifier.issn1873-7633 (online)
dc.identifier.other10.1016/j.compgeo.2019.05.004
dc.identifier.urihttp://hdl.handle.net/2263/70140
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2019 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Computers and Geotechnics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Computers and Geotechnics, vol. 113, art. 103089, pp. 1-11, 2019, doi : 10.1016/j.compgeo.2019.05.004.en_ZA
dc.subjectTrapdoor mechanismen_ZA
dc.subjectArchingen_ZA
dc.subjectFinite element analysisen_ZA
dc.subjectUpper bound limit analysisen_ZA
dc.subjectSoilsen_ZA
dc.subjectStrainen_ZA
dc.subjectAssociative flowsen_ZA
dc.subjectAssociative modelsen_ZA
dc.subjectColumn modelingen_ZA
dc.subjectParametric studyen_ZA
dc.subjectSolutions dealingen_ZA
dc.subjectStrength parametersen_ZA
dc.titleAnalysis of maximum arching conditions in active plane-strain trapdoors in sanden_ZA
dc.typePostprint Articleen_ZA

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