Journal article

Development of a real-time hybrid testing method in a centrifuge

Vickie Kong, Mark Jason Cassidy, Christophe Gaudin

INTERNATIONAL JOURNAL OF PHYSICAL MODELLING IN GEOTECHNICS | ICE PUBLISHING | Published : 2015

Abstract

This paper presents a pioneering real-time hybrid testing method for geotechnical centrifuges. The method was used to investigate the behaviour of a jack-up leg reinstalled near an existing footprint, a problem that is highly nonlinear, stress dependent and involves complex soil-structure interactions. By physically modelling only the footprint-leg interaction and numerically modelling the rest of the jack-up structure, the method enables a realistic account of all the parameters involved in the interaction, including the footprint geometry, soil heterogeneity and structural properties of the jack-up unit. The paper also details the three-degree-of-freedom actuators developed to model the in..

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University of Melbourne Researchers

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Funding Acknowledgements

The lead author acknowledges the support of an Australian postgraduate scholarship. The authors also thank Mr Phil Hortin and Mr Shane De Catania for their contribution to the development of the experimental apparatus and software. The work forms part of the activities of the Centre for Offshore Foundation Systems (COFS), which is supported by the Lloyd's Register Foundation and is now forming one of the primary nodes of the Australian Research Council (ARC) Centre of Excellence in Geotechnical Science and Engineering. The authors thank the anonymous reviewers for their comments and advice that improved the final manuscript.