Jack-up push-over analyses featuring a new force resultant model for spudcans in soft clay

Y Zhang; B Bienen; MJ Cassidy

Journal article

Jack-up push-over analyses featuring a new force resultant model for spudcans in soft clay

Y Zhang, B Bienen, MJ Cassidy

Ocean Engineering | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2014

DOI: 10.1016/j.oceaneng.2014.02.008

Abstract

With the development of the offshore oil and gas industry, mobile jack-up drilling platforms are increasingly utilized in deeper waters and harsher environments. Excessive conservatism in jack-up site specific assessment may result in undue rejection of a unit. In soft clayey seabeds, the spudcan foundations of the jack-up platform penetrate deeply into the soil with partial or complete backflow. Although the deep penetration and associated backflow are widely perceived to increase horizontal and moment foundation bearing capacities in particular, the problem is not well understood. In this paper therefore, a plasticity foundation model is proposed that accounts for the effects of backflow. ..

View full abstract

University of Melbourne Researchers

Mark Cassidy Author

Related Projects (1)

2013 AUSTRALIAN LAUREATE FELLOWSHIP - PROF MARK CASSIDY - NEW FRONTIERS IN OFFSHORE GEOTECHNICS: SECURING AUSTRALIA'S ENERGY FUTURE (TRANSFER IN)

Offshore gas lies at the heart of Australia's prosperity, with $120 billion of infrastructure under construction, however its future require..

Grants

Awarded by Australian Research Council

Funding Acknowledgements

The first author received a University of Western Australia SIRF scholarship and an Australia-China Natural Gas Technology Partnership Fund PhD top-up scholarship during which time the work described in this paper was performed. The second author acknowledges the funding support from an Australian Research Council (ARC) Postdoctoral Fellowship (DP11010163). The third author is the recipient of an ARC Laureate Fellowship (FL130100059) and holds the Chair of Offshore Foundations from 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. He gratefully acknowledges this support.