[en] Suction caisson are hollow cylinders open towards the bottom that are currently used as anchors
for deep water offshore facilities. They recently turned out to be advantageously exploited as foundation for
offshore wind turbines in shallow water (Senders 2009). The Prevost model for cohesionless soils (Prevost
1985) is currently used for the modelling of their cyclic behaviour. It’s able to reproduce plastic deformation in
both loading and unloading, contractancy of the soil and pore pressure build up as well. In this paper, a fully-
coupled transient axisymmetric analysis of a suction caisson is carried out. A vertical pseudo-random loading
is transformed into equivalent ones. Comparison of the permanent displacement accumulated shows a good
agreement between them. The influence of the interface conditions is also addressed. For low tension amplitude
applied to the caisson, it can be modelled as “stuck” to the inner soil. However higher amplitude might lead to
a total unplugging.
Disciplines :
Civil engineering
Author, co-author :
Cerfontaine, Benjamin ; Université de Liège - ULiège > Département ArGEnCo > Géomécanique et géologie de l'ingénieur
Levasseur, Séverine ; Université de Liège - ULiège > Département ArGEnCo > Géomécanique et géologie de l'ingénieur
Collin, Frédéric ; Université de Liège - ULiège > Département ArGEnCo > Géotechnique
Charlier, Robert ; Université de Liège - ULiège > Département ArGEnCo > Géomécanique et géologie de l'ingénieur
Language :
English
Title :
Axisymmetric transient modelling of a suction caisson in dense sand
Publication date :
2014
Event name :
Numerical Methids in Geotechnical Engineering
Event organizer :
Hicks, Michael A. Brinkgreve, Ronald B.J. Rohe, Alexander
Event place :
Delft, Netherlands
Event date :
du 17 juin 2014 au 20 juin 2014
Audience :
International
Main work title :
Numerical Methods in Geotechnical Engineering
Editor :
Hicks, Michael A.
Brinkgreve, Ronald, B.J.
Rohe, Alexander
Publisher :
CRC Press/Balkema
ISBN/EAN :
978-1-138-00146-6
Peer reviewed :
Peer reviewed
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture
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