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Use of the free fall cone penetrometer (FF-CPTU) in offshore landslide hazard assessment

dc.contributor.authorL'Heureux, Jean-Sébastien
dc.contributor.authorVanneste, Maarten
dc.contributor.authorKopf, A.
dc.contributor.authorLong, M.
dc.date.accessioned2018-09-04T11:02:30Z
dc.date.available2018-09-04T11:02:30Z
dc.date.created2018-06-11T09:27:25Z
dc.date.issued2018
dc.identifier.isbn9781138584495
dc.identifier.urihttp://hdl.handle.net/11250/2560689
dc.description.abstractFree fall penetrometer (FF-CPTU) testing can provide significant advantages over conventional CPTU investigation for shallow sub-surface offshore site investigations. Much work has been done on soil characterisation and on determination of the undrained shear strength (su) from FF-CPTU testing. However, little data has been published on analysis of FF-CPTU dissipation testing. Here, FF-CPTU data from two Nor-wegian fjords with evidence of recent landsliding are presented, and the techniques used to analyse and correct the data are described. At Hommelvika, relatively high residual excess pore pressures (15-17 kPa) were found in the vicinity of a large pockmark identified on the fjord bed from multibeam data. At Finneidfjord, the residual excess pore pressures are lower and are in agreement with long-term piezometer data from the area. Reliable estimates of the coefficient of consolidation (ch) were also be obtained from the FF-CPTU dissipation tests.
dc.description.abstractUse of the free fall cone penetrometer (FF-CPTU) in offshore landslide hazard assessment
dc.language.isoeng
dc.relation.ispartofCone Penetration Testing IV: Proceedings of the 4th International Symposium on Cone Penetration Testing (CPT 2018), June 21-22, 2018, Delft, The Netherlands
dc.titleUse of the free fall cone penetrometer (FF-CPTU) in offshore landslide hazard assessment
dc.title.alternativeUse of the free fall cone penetrometer (FF-CPTU) in offshore landslide hazard assessment
dc.typeChapter
dc.description.versionpublishedVersion
dc.source.pagenumber401-406
dc.identifier.cristin1590331
cristin.unitcode7452,2,4,0
cristin.unitcode7452,4,3,0
cristin.unitnameGeoteknikk og Naturfare Trondheim
cristin.unitnameOffshore geoteknikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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