Journal article
Development of a force-resultant model for spudcan footings on loose sand under combined loads
N Cheng, MJ Cassidy
Canadian Geotechnical Journal | CANADIAN SCIENCE PUBLISHING | Published : 2016
Abstract
Spudcans are typical foundations used in shallow to moderate-depth water oil and gas fields to support jack-up drilling units. Understanding the behaviour of spudcans under combined loadings is crucial to the overall response of the jack-up structure. This paper presents the development of a strain-hardening plasticity model for a spudcan footing on loose sand. Most of the model components are developed from direct centrifuge observations. The centrifuge tests were performed at an acceleration of 100 times that of the Earth’s gravity on a model spudcan footing subjected to combined vertical, horizontal, and moment loads. All the experiments have been designed and conducted to allow the resul..
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Awarded by Lloyd's Register Foundation
Funding Acknowledgements
The first author acknowledges the support of the Australian Postgraduate Awards. The second author acknowledges the support of the Australian Research Council (ARC) through his Australian Laureate Fellowship (FL130100059) and to the Lloyd's Register Foundation (LRF). LRF, a UK registered charity and sole shareholder of Lloyd's Register Group Ltd, invests in science, engineering and technology for public benefit, worldwide. The authors thank the following colleagues and technical staff at the Centre for Offshore Foundation Systems at The University of Western Australia who provided invaluable support during the instrumentation of the centrifuge test: Shane De Catania, Bart Thompson, Youhu Zhang, and Conleth O'Loughlin.