Geotechnical engineering is often referred to as a black box because it deals with materials below the ground which are naturally variable in both properties and behaviour. This variability is often not well understood, which presents a significant risk and opportunity for both designers and contractors. As geotechnical engineering is not an exact science, the solutions to the same problem may be vastly different depending on the appetite for an aggressive or conservative solution. In Jeff’s presentation, he will firstly talk about the behaviour of soil and rock, the uncertainties associated with such materials and the risk mitigation measures that can be adopted to achieve satisfactory geotechnical performance.
He will then present several case histories where significant geotechnical challenges have been overcome by a balanced approach, taking into account both risks and opportunities. These case studies include embankments constructed on soft soils, a cut & cover tunnel built in saturated loose sands, a TBM tunnel bored in karstic limestone formation and construction of an innovative two-staged reinforced soil wall to accommodate large ground settlement. Jeff’s presentation will demonstrate how a balanced approach can be used to reach an optimum geotechnical solution.
Dr. Jeff Hsi,
BSc, MSc, PhD, MIEAust, CPEng, MICE, CEng, RPEQ
Technical Principal – Geotechnical, EIC Activities Pty Ltd
Adjunct Professor, University of Technology Sydney
Dr Jeff Hsi is a Technical Principal with EIC Activities, which is a member of the CIMIC Group. Jeff has over 30 years’ professional experience in geotechnical engineering and has been involved in many large multi-disciplinary civil infrastructure projects within Australia and overseas. Jeff’s specialist areas of expertise include soft ground engineering, excavations and tunnels, deep foundations and retaining structures, and earthworks and materials. He has worked for both consulting and construction firms throughout his career; and has provided expert witness and forensic engineering services to lawyers and insurance companies for arbitration, litigation and legal cases. Jeff has had over 60 technical papers published in journals and conferences. He is a frequently invited speaker at universities and technical societies and is an Adjunct Professor at the University of Technology Sydney. He delivered a Keynote Speech on “Soft Ground Engineering in Practice” at the AGS Symposium Sydney 2016.
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