1. Associate Professor of Structural Engineering, School of Civil, Mining and Environmental Engineering, Univ. of Wollongong, Wollongong, NSW 2522, Australia (corresponding author).
2. Ph.D. Candidate, School of Civil, Mining and Environmental Engineering, Univ. of Wollongong, Wollongong, NSW 2522, Australia.
3. Professor of Structural Engineering, School of Engineering, Univ. of Western Sydney, Penrith, NSW 2750, Australia.