Rapid penetration of spudcans in sand

Research output: Chapter in Book/Conference paperConference paperpeer-review

Abstract

The growing pressure for jack-up rigs to relocate during more challenging metocean conditions for offshore wind turbine installation and maintenance has increased the risk of dynamic leg loading during the set down of the spudcan footings into the seabed. To better understand the rapid sand-spudcan interaction, this study presents experimental results of a model spudcan
jacked at a range of penetration rates into dry and saturated sand at both 1g and 50g gravitational acceleration. In order to achieve a wide range of consolidation conditions, the sand was saturated using both water and a viscous pore fluid (methocel cellulose ethers) with kinematic viscosity 680 times higher than water in the 50g centrifuge tests. The results indicated up to 120% increase in spudcan penetration resistance due to the dilatancy-induced suction when the
onsolidation response changes from drained to undrained. This change in
spudcan penetration resistance is quantified using a proposed backbone curve framework.
Original languageEnglish
Title of host publicationProceedings of the 4th International Symposium on Frontiers in Offshore Geotechnics (ISFOG)
Place of PublicationUSA
PublisherDeep Foundations Institute
Pages2238-2247
Publication statusPublished - 2020
Event4th International Symposium on Frontiers in Offshore Geotechnics - Austin, United States
Duration: 8 Nov 202011 Nov 2020
Conference number: 4
https://www.isfog2020.org/proceedings

Conference

Conference4th International Symposium on Frontiers in Offshore Geotechnics
Abbreviated titleISFOG 2020
Country/TerritoryUnited States
CityAustin
Period8/11/2011/11/20
Internet address

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