1. Ph.D. Candidate, Dept. of Civil Engineering, Monash Univ., Victoria, Australia.
2. Associate Professor, Dept. of Civil Engineering, Monash Univ., Victoria, Australia (corresponding author).
3. Senior Principal Research Scientist, CSIRO Earth Science and Resource Engineering, Clayton, Victoria, Australia.
4. Senior Lecturer, Dept. of Civil Engineering, Monash Univ., Victoria, Australia.