Journal article
Numerical modelling of the effects of consolidation on jack-up spudcan penetration
R Ragni, D Wang, D Mašín, B Bienen, MJ Cassidy, SA Stanier
Computers and Geotechnics | ELSEVIER SCI LTD | Published : 2016
Abstract
The paper addresses the issue of consolidation around jack-up foundations in carbonate silty clay. The problem is tackled with the numerical implementation of a hypoplastic model for structured clays, within the framework of large deformation finite element analyses. Coupled analyses are simulated to account for excess pore pressure build-up and dissipation, while sensitivity parameters capture the effects of remoulding. The model implementation is described first, followed by its validation against centrifuge data. The paper concludes with a detailed discussion of beneficial or detrimental effects on spudcan capacity upon re-penetration, depending on the consolidation and soil sensitivity c..
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Awarded by Australian Research Council
Funding Acknowledgements
This work forms part of the activities of the Centre for Offshore Foundation Systems (COFS), which is currently supported as one of the primary nodes of the Australian Research Council (ARC) Centre of Excellence for Geotechnical Science and Engineering and as a Centre of Excellence by the Lloyd's Register Foundation. Lloyd's Register Foundation helps to protect life and property by supporting engineering-related education, public engagement and the application of research. The fourth and fifth authors are the recipients of ARC Postdoctoral (DP110101603) and Laureate Fellowships (FL130100059), respectively. The authors are grateful for these supports.