Large deformation of soils in offshore foundation design
Offshore oil and gas exploration has been expanding from shallow to deep waters. Offshore foundations have been evolving from gravity foundation in shallow water to spudcan foundation for jackup rigs in medium water and anchors for deep water. Foundation failure is one of the major concerns in offshore design.
This presentation will provide an overview on the research, using physical and numerical modelling, in studying and preventing foundation failures when large deformation of soil is inevitable, such as spudcan penetration, anchor keying and penetrometers for site investigations. The applications of numerical method of LDFE/RITSS to simulate large deformation of soils will be demonstrated. Recent studies on T-bar penetrometer in single and layered clays will be reported.
Professor Yuxia Hu, Head of Civil, Environmental and Mining Engineering
Professor Yuxia Hu
Head of Civil, Environmental and Mining Engineering
University of Western Australia
Prof Yuxia Hu studied at Dalian University of Technology in China for her undergraduate and postgraduate degrees. She obtained her PhD degree in 1991 on hydrodynamics forces on pipelines. After an eight months visit of Gifu University in Japan, she came to Australia and joined the geomechanics group at The University of Western Australia (UWA) in 1992. Since then, she has changed her research area from hydrodynamics to offshore geomechanics. She, together with Prof. Mark Randolph, developed the LDFE/RITSS (Large Deformation FE/Remeshing and Interpolation Technique with Small Strain) method for offshore geomechanics. The LDFE/RITSS method has been implemented in AFENA, ABAQUS and other software. It has been used in many offshore soilstructure interaction analysis where soil large deformation is involved. Her research has been published in more than 100 scientific papers. Some research findings have been incorporated in ISO for offshore foundation designs. She is now working as a Professor and Head of the Department of civil, environmental and mining engineering at the University of Western Australia.