1. Ph.D. Candidate, Dept. of Civil Engineering, Faculty of Engineering, Monash Univ., Building 60, Clayton Campus, VIC 3800, Australia.
2. Senior Lecturer, Dept. of Civil and Construction Engineering, Faculty of Science, Engineering and Technology, Swinburne Univ. of Technology, Hawthorn, VIC 3122, Australia; formerly, Monash Univ., Clayton, VIC 3800, Australia.
3. Lecturer, Dept. of Civil Engineering, School of Civil, Environmental and Chemical Engineering, RMIT Univ., GPO Box 2476, Melbourne, VIC 3001, Australia; formerly, Monash Univ., Clayton, VIC 3800, Australia.
4. Professor, Dept. of Civil Engineering, Faculty of Engineering, Monash Univ., Building 60, Clayton Campus, VIC 3800, Australia (corresponding author).