1. Ph.D. Candidate, School of Civil and Environmental Engineering, Univ. of Technology Sydney (UTS), City Campus, P.O. Box 123 Broadway, Sydney, NSW 2007, Australia.
2. Senior Lecturer of Geotechnical Engineering, School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, Univ. of Technology Sydney (UTS), City Campus, P.O. Box 123 Broadway, Sydney, NSW 2007, Australia (corresponding author).