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dc.contributor.authorSkau, Kristoffer Skjolden
dc.contributor.authorChen, Ying
dc.contributor.authorJostad, Hans Petter
dc.date.accessioned2017-11-06T13:46:51Z
dc.date.available2017-11-06T13:46:51Z
dc.date.created2017-07-25T13:21:56Z
dc.date.issued2017
dc.identifier.citationGeotechnique. 2017, .nb_NO
dc.identifier.issn0016-8505
dc.identifier.urihttp://hdl.handle.net/11250/2464312
dc.description.abstractSkirted foundations have been widely applied as offshore foundations for several decades. In design, the use of failure envelopes is convenient for assessing stability under combined loading. A large number of studies on failure envelopes exist in the literature based on experiments and numerical analyses. Most of these studies focus on ultimate capacity and static loading. This paper presents a numerical study focusing on cyclic degradation and failure envelopes for skirted foundations subjected to combined cyclic and static loading. It was found that the shapes of the failure envelopes are little affected by degradation expressed by the number of equivalent cycles. In addition to failure envelopes, contours of displacements were computed in the three-dimensional load space (vertical, horizontal and moment load) for a more complete description of the response. As an example, the well-defined cyclic contour diagrams of Drammen clay were utilised to demonstrate how foundation response diagrams can be established. The database is accompanied by a simplified procedure to account for cyclic degradation through equivalent number of cycles, different normalised load–displacement response and variation in foundation geometry. The framework of procedures can be used to estimate foundation stiffness and capacity and the results can serve as a basis for the development of foundation macro-element models.nb_NO
dc.language.isoengnb_NO
dc.publisherThomas Telford (ICE Publishing)nb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleA numerical study of capacity and stiffness of circular skirted foundations in clay subjected to combined static and cyclic general loadingnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber16nb_NO
dc.source.journalGeotechniquenb_NO
dc.identifier.doi10.1680/jgeot.16.P.092
dc.identifier.cristin1483036
dc.description.localcodeThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.nb_NO
cristin.unitcode194,64,35,0
cristin.unitnameInstitutt for bygg, anlegg og transport
cristin.ispublishedfalse
cristin.fulltextoriginal
cristin.qualitycode2


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