Journal article

Revealing the bearing capacity mechanisms of a penetrating spudcan through sand overlying clay

KL Teh, MJ Cassidy, CF Leung, YK Chow, MF Randolph, CK Quah

Géotechnique | ICE PUBLISHING | Published : 2008


The safe and economic use of mobile jack-up structures is still hindered by limited understanding of the installation of their large conical 'spudcan' footings in layered sand over clay sites. This paper addresses this by detailing experimentally observed bearing failure modes induced during the penetration of a spudcan through a layer of sand into underlying normally consolidated clay. Digital images were captured continuously by installing a half-spudcan against a transparent window, and analysed using a particle image velocimetry technique coupled with close-range photogrammetry correction. As the experiments were performed in a geotechnical centrifuge the observed mechanisms occurred in ..

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University of Melbourne Researchers


Awarded by Australian Research Council

Awarded by National University of Singapore from Singapore Ministry of Education ACRF Tier 1

Funding Acknowledgements

The experimental work carried out at the University of Western Australia was supported by the Australian Research Council through the ARC Linkage grant scheme (LP0560459) and industry partner Keppel Offshore and Marine. The present study was also funded by the National University of Singapore research grant RP 264-000-167-112 'Punch through of mobile jack-up' from Singapore Ministry of Education ACRF Tier 1 funding support. These are gratefully acknowledged. The first author is grateful to Dr D. J. White for his valuable input on PIV analysis and Mr Bart Thompson for his tremendous assistance in the experimental work.