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dc.contributor.authorShen, Kanmin
dc.contributor.authorWang, Lizhong
dc.contributor.authorGuo, Zhen
dc.contributor.authorJeng, Dong-sheng
dc.date.accessioned2017-11-28T23:02:10Z
dc.date.available2017-11-28T23:02:10Z
dc.date.issued2017
dc.identifier.issn0013-7952
dc.identifier.doi10.1016/j.enggeo.2016.12.001
dc.identifier.urihttp://hdl.handle.net/10072/143694
dc.description.abstractThe suction anchor is an effective option for the anchor foundations of floating offshore wind turbines (FOWTs). During its long-term service, in addition to the static pretension load, the suction anchor is subjected to a series of cyclic loads that are caused by waves, currents and the continuous motions of the floating structure. Thus, excess pore-pressure will accumulate within the soil around the embedded anchor, and the anchor capacity tends to be reduced. In this paper, by introducing the oscillatory and residual mechanisms, a novel numerical model is proposed to predict the instantaneous variations and accumulations of excess pore-pressures around a suction anchor that is subjected to long-term vertical cyclic loads. The results indicate that excess pore-pressure builds up mainly in the shallow soil near the external anchor wall. As a consequence, the effective soil stress in this region decreases along with the interface friction between the external wall and the soil. Detailed parametric studies reveal that the accumulation of excess pore-pressure is obvious for a larger load magnitude and smaller load period. With a lower permeability, smaller shear modulus or smaller relative density of the seabed soil, the pore-pressure accumulation outside the anchor increases significantly.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto13
dc.relation.ispartofjournalEngineering Geology
dc.subject.fieldofresearchCivil Engineering not elsewhere classified
dc.subject.fieldofresearchCivil Engineering
dc.subject.fieldofresearchGeomatic Engineering
dc.subject.fieldofresearchOther Engineering
dc.subject.fieldofresearchcode090599
dc.subject.fieldofresearchcode0905
dc.subject.fieldofresearchcode0909
dc.subject.fieldofresearchcode0999
dc.titleNumerical investigations on pore-pressure response of suction anchors under cyclic tensile loadings
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.description.notepublicThis publication has been entered into Griffith Research Online as an Advanced Online Version.
gro.hasfulltextNo Full Text
gro.griffith.authorJeng, Dong-Sheng


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