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dc.contributor.authorChen, W
dc.contributor.authorLiu, C
dc.contributor.authorHe, R
dc.contributor.authorChen, G
dc.contributor.authorJeng, D
dc.contributor.authorDuan, L
dc.date.accessioned2021-05-25T00:02:24Z
dc.date.available2021-05-25T00:02:24Z
dc.date.issued2021
dc.identifier.issn0141-1187
dc.identifier.doi10.1016/j.apor.2021.102627
dc.identifier.urihttp://hdl.handle.net/10072/404521
dc.description.abstractThe determination of stability for the submarine artificial slope is important in the construction of offshore structures such as immersed tunnels and embedded pipelines. Aimed at this issue, a two-dimensional (2D) integrated model is proposed to investigate the slope stability of the foundation trench for the immersed tunnel under the combined wave and current loading, as in the real marine environment. The Reynolds-Averaged Navier-Stokes (RANS) equations are solved to simulate the wave field, meanwhile the current is realized by setting boundary inlet and outlet velocity at both sides. The interface between water and air is tracked by conservative Level Set Method (LSM). The wave-current induced pore pressure in seabed is calculated by Darcy's law, and the shear strength reduction method is adopted to judge the damage of the elastic-plastic seabed slope which is described through Mohr-Coulomb constitutive model. The wave-current model is validated through comparing with experimental data and analytical solution. The consolidation status of foundation trench after excavation is obtained and set as the initial condition for analysis. The factor of stability (FOS) for the slope is demonstrated to depend on the relative distance between wave crest and slope. The minimum of FOS corresponding to the most dangerous situation is regarded as the stability index for the slope with specific slope ratio in the whole process of dynamic wave-current loading. Through the parametric analysis based on this new evaluation method, the effects of soil strength parameters, slope ratio and current direction on the slope stability are discussed in detail.
dc.description.peerreviewedYes
dc.languageen
dc.publisherElsevier BV
dc.relation.ispartofpagefrom102627
dc.relation.ispartofjournalApplied Ocean Research
dc.relation.ispartofvolume110
dc.subject.fieldofresearchOceanography
dc.subject.fieldofresearchCivil engineering
dc.subject.fieldofresearchResources engineering and extractive metallurgy
dc.subject.fieldofresearchcode3708
dc.subject.fieldofresearchcode4005
dc.subject.fieldofresearchcode4019
dc.titleStability of the foundation trench of the immersed tunnel subjected to combined wave and current loading
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationChen, W; Liu, C; He, R; Chen, G; Jeng, D; Duan, L, Stability of the foundation trench of the immersed tunnel subjected to combined wave and current loading, Applied Ocean Research, 2021, 110, pp. 102627
dcterms.licensehttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.date.updated2021-05-19T23:04:54Z
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2021 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorJeng, Dong-Sheng


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