Journal article

Bearing capacity on sand overlying clay soils: a simplified conceptual model

KK Lee, MF Randolph, MJ Cassidy



The derivation of a new conceptual model for predicting the peak penetration resistance of circular footings installed vertically into sand overlying soft clay is presented in this paper. Based on visualisation experiments and finite-element analyses, a failure mechanism of a frustum of sand being forced into the underlying clay, with the outer angle reflecting the dilation in the sand, is assumed. The analytical basis of the new conceptual model follows the approach for silo analysis, and takes into account the stress level and dilatant response of the sand. A comprehensive analysis of the performance of the new model, and other existing analytical methods, in retrospectively predicting the..

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University of Melbourne Researchers


Awarded by Australian Research Council through the ARC Linkage grant scheme

Awarded by Australian Research Council

Funding Acknowledgements

The research presented here was supported by the Australian Research Council through the ARC Linkage grant scheme (Project LP0561838), and by industry partner Keppel Offshore and Maritime Limited. This work forms part of the activities of the Centre for Offshore Foundation Systems and the Australian Research Council Centre of Excellence for Geotechnical Science and Engineering at UWA. The authors acknowledge extensive support through the ARC's Federation and Future Fellowships, Discovery and Linkage programmes. The third author holds the Chair of Offshore Foundations from the Lloyd's Register Foundation. This support is gratefully acknowledged.