- This event has passed.
TALK: New Generation Offshore Site Investigation Tool and Rapid soil-structure interaction for Offshore Energy Applications
June 27 @ 11:00 am - 12:30 pm
New Generation Offshore Site Investigation Tool and Rapid soil-structure interaction for Offshore Energy Applications
Thursday, June 27 at 11 a.m. in SF1009, Sandford Fleming Building
Abstract
This presentation will start by providing an overview of research activities within the Offshore Geomechanics Group at the University of Melbourne. The next part of the presentation will cover free-fall penetrometer (FFP), a new generation offshore site investigation tool with the ability of covering a large seabed area in a relatively short time frame compared to conventional tools. An improved FFP interpretation was proposed to estimate the soil undrained shear strength and coefficient of consolidation, derived from centrifuge modelling of a free-fall piezocone in soft clay. The last part of the talk will cover research on several rapid soil-structure interaction in sand (piezocone, spudcan and plate anchor) using centrifuge modelling. Offshore rapid soil-structure interaction in sand typically results in partially drained and undrained behaviour due to the size of the structure and the environmental loading. The centrifuge test results indicated a 50% to 400% increase in soil resistance when transiting from drained to undrained condition in dilating sand, which can be captured using a proposed backbone curve framework. The results also revealed complex pore pressure responses during rapid penetration in sand, with more insights to be provided through ongoing numerical development.
Bio
Shiaohuey Chow is an Associate Professor in Geotechnical Engineering at the University of Melbourne. Her research interests include offshore geotechnical site investigation, anchoring solution in sand, strain rate effects in soils and sample disturbance effects on soft soils. Her works have received several international best paper awards, including the Telford Premium Prize in 2016 and Manby Prize in 2014 from the Institution of Civil Engineers (ICE), UK. Shiaohuey is an Associate Editor for the Géotechnique Letters and International Journal of Physical Modelling in Geotechnics. She is also a member of the ISSMGE TC214 on Foundation Engineering for Difficult Soft Soil Conditions, and Secretary of the Australian Geomechanics Society (Victorian Chapter).