Professor Ashraf Osman ashraf.osman@durham.ac.uk
Professor
Analysis of maximum arching conditions in active plane-strain trapdoors in sand
Osman, Ashraf S.; Jacobsz, S.W.
Authors
S.W. Jacobsz
Abstract
The 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.
Citation
Osman, A. S., & Jacobsz, S. (2019). Analysis of maximum arching conditions in active plane-strain trapdoors in sand. Computers and Geotechnics, 113, Article 103089. https://doi.org/10.1016/j.compgeo.2019.05.004
Journal Article Type | Article |
---|---|
Acceptance Date | May 5, 2019 |
Online Publication Date | May 16, 2019 |
Publication Date | Sep 30, 2019 |
Deposit Date | May 30, 2019 |
Publicly Available Date | May 16, 2020 |
Journal | Computers and Geotechnics |
Print ISSN | 0266-352X |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 113 |
Article Number | 103089 |
DOI | https://doi.org/10.1016/j.compgeo.2019.05.004 |
Files
Accepted Journal Article
(1.6 Mb)
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Publisher Licence URL
http://creativecommons.org/licenses/by-nc-nd/4.0/
Copyright Statement
© 2019 This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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