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dc.contributor.authorElshesheny, Ahmed
dc.contributor.authorMohamed, Mostafa H.A.
dc.contributor.authorNagy, N.M.
dc.contributor.authorSheehan, Therese
dc.date.accessioned2021-03-23T20:52:26Z
dc.date.accessioned2021-04-01T09:21:33Z
dc.date.available2021-03-23T20:52:26Z
dc.date.available2021-04-01T09:21:33Z
dc.date.issued2020-06
dc.identifier.citationElshesheny A, Mohamed M, Nagy NM et al (2020) Numerical behaviour of buried flexible pipes in geogrid-reinforced soil under cyclic loading. Computers and Geotechnics. 122: 103493.en_US
dc.identifier.urihttp://hdl.handle.net/10454/18416
dc.descriptionYesen_US
dc.description.abstractThree-dimensional finite element models were executed and validated to investigate the performance of buried flexible high-density Polyethylene (HDPE) pipes, in unreinforced and multi-geogrid-reinforced sand beds, while varying pipe burial depth, number of geogrid-layers, and magnitude of applied cyclic loading. Geogrid-layers were simulated considering their geometrical thickness and apertures, where an elasto-plastic constitutive model represented its behaviour. Soil-geogrid load transfer mechanisms due to interlocked soil in-between the apertures of the geogrid-layer were modelled. In unreinforced and reinforced cases, pipe burial depth increase contributed to decreasing deformations of the footing and pipe, and the crown pressure until reaching an optimum value of pipe burial depth. On the contrary, the geogrid-layers strain increased with increasing pipe burial depth. A flexible slab was formed due to the inclusion of two-geogrid-layers, leading to an increase in the strain in the lower geogrid-layer, despite its lower deformation. Inclusion of more than two geogrid-layers formed a heavily reinforced system of higher stiffness, and consequently, strain distribution in the geogrid-layers varied, where the upper layer experienced the maximum strain. In heavily reinforced systems, increasing the amplitude of cyclic loading resulted in a strain redistribution process in the reinforced zone, where the second layer experienced the maximum strain.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1016/j.compgeo.2020.103493en_US
dc.rights© 2020 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.en_US
dc.subjectBuried flexible pipeen_US
dc.subjectCyclic loadingen_US
dc.subjectElasto-plastic constitutive behaviouren_US
dc.subjectNumerical modellingen_US
dc.subjectSlack effecten_US
dc.subjectThree-dimensional geogrid modellingen_US
dc.titleNumerical behaviour of buried flexible pipes in geogrid-reinforced soil under cyclic loadingen_US
dc.status.refereedYesen_US
dc.date.Accepted2020-02-11
dc.date.application2020-03-31
dc.typeArticleen_US
dc.type.versionAccepted manuscripten_US
dc.date.updated2021-03-23T20:52:29Z
refterms.dateFOA2021-04-01T09:26:31Z
dc.openaccess.statusGreenen_US


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