1. Associate Professor, Institute for Infrastructure Engineering, Univ. of Western Sydney, Penrith, NSW 2751, Australia (corresponding author).
2. Associate Professor, Dept. of Civil Engineering, Shandong Polytechnic, Jinan, Shandong Province, 250013, P.R. China.
3. Professor of Structural Engineering and Director, Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.