NTU-CEE Distinguished Seminar Series: Professor Yin Jian-Hua
Organized By
CEE Seminar Committee
Host By
Professor Chu Jian
Topic
Fully Coupled Numerical Methods and a Simple Method for Consolidation Analysis of Clayey Soils
About the Seminar
Viscous compressions of soil skeleton in "primary" consolidation may contribute a lot to excessive settlements. Currently, there are two hypotheses regarding methods for calculating consolidation settlements of clayey soils.
The first method, hypothesis A, always underestimates the settlement and gives unsafe settlement predictions. On the other hand, the second method (hypothesis B), utilizes fully coupled methods with different Elastic Visco-Plastic models for consolidation analysis of clayey soils. The fully coupled methods are considered more rigorous and are accurate enough, However it is difficult to be used by engineers. A simplified Hypothesis B method for consolidation settlement calculation of onelayer and multilayers of clayey soils has been developed.
This seminar will present a general simple method and verification for very general and complicated case of :
(i) layered soils exhibiting creep,
(ii) zero or small initial effective stress considered,
(iii) without or with vertical drains,
(iv) under any staged loading including un/re-loading, and
(v) spread-sheetcalculation with good accuracy.
About the Speaker
Professor Jian-Hua Yin is Distinguished Research Professor in the Department of Civil and Environmental Engineering at The Hong Kong Polytechnic University. He was Chair Professor of Soil Mechanics and Leader of Geotechnical Unit in the Department until very recently. He received his Ph.D. from the University of Manitoba, Canada. Prof. Yin’s research focuses on testing and constitutive modelling of geomaterials, ground improvement of soft soils, slope stabilization, and smart geotechnical monitoring using optical fibre sensors.
He pioneered nonlinear rheology theory and developed onedimensional and three-dimensional elastic–visco–plastic (EVP) soil models, which have been adopted in the Canadian Foundation Engineering Manual (5th edition, 2023). He has published more than 500 refereed papers and is among the most cited authors in the Canadian Geotechnical Journal. His research achievements have earned him international recognition, including the IACMAG Outstanding Contributions Medal.
Prof. Yin serves as Vice-President of the International Association for Computer Methods and Advances in Geomechanics (IACMAG) and as Co-Editor of the ASCE International Journal of Geomechanics. He is a Fellow of the Hong Kong Academy of Engineering Sciences and a Chartered Engineer with the Hong Kong Institution of Engineers.