Analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimization

Analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimization

This paper addresses a numerical study into passive earth pressure in an unsaturated sandy soil. The computational limit analysis method, discontinuity layout optimization (DLO), is extended to take into consideration the effect of saturation and suction on strength. The extended analysis was utilis...

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Main Author: Shwan Bestun
Format: Article
Language:English
Published: EDP Sciences 2016-01-01
Series:E3S Web of Conferences
Online Access:http://dx.doi.org/10.1051/e3sconf/20160908018
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spelling doaj-db60da147dae4a97aa8f5353965295832021-02-02T05:39:51ZengEDP SciencesE3S Web of Conferences2267-12422016-01-0190801810.1051/e3sconf/20160908018e3sconf_eunsat2016_08018Analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimizationShwan BestunThis paper addresses a numerical study into passive earth pressure in an unsaturated sandy soil. The computational limit analysis method, discontinuity layout optimization (DLO), is extended to take into consideration the effect of saturation and suction on strength. The extended analysis was utilised to model a retaining wall case study using a sandy soil as a simulated backfill material and the results were compared with Rankine equations which were modified to take into account the capillary rise effect. The numerical results demonstrated that an increase of the total passive thrust up to 47%, for a frictionless wall, at ϕ′ = 30° due to the effect of partial saturation in the sandy soil.http://dx.doi.org/10.1051/e3sconf/20160908018
collection DOAJ
language English
format Article
sources DOAJ
author Shwan Bestun
spellingShingle Shwan Bestun
Analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimization
E3S Web of Conferences
author_facet Shwan Bestun
author_sort Shwan Bestun
title Analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimization
title_short Analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimization
title_full Analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimization
title_fullStr Analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimization
title_full_unstemmed Analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimization
title_sort analysis of passive earth thrust in an unsaturated sandy soil using discontinuity layout optimization
publisher EDP Sciences
series E3S Web of Conferences
issn 2267-1242
publishDate 2016-01-01
description This paper addresses a numerical study into passive earth pressure in an unsaturated sandy soil. The computational limit analysis method, discontinuity layout optimization (DLO), is extended to take into consideration the effect of saturation and suction on strength. The extended analysis was utilised to model a retaining wall case study using a sandy soil as a simulated backfill material and the results were compared with Rankine equations which were modified to take into account the capillary rise effect. The numerical results demonstrated that an increase of the total passive thrust up to 47%, for a frictionless wall, at ϕ′ = 30° due to the effect of partial saturation in the sandy soil.
url http://dx.doi.org/10.1051/e3sconf/20160908018
work_keys_str_mv AT shwanbestun analysisofpassiveearththrustinanunsaturatedsandysoilusingdiscontinuitylayoutoptimization
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