1. Ph.D. Student, School of Civil and Environmental Engineering, Univ. of Adelaide, South Australia 5005, Australia.
2. Professor of Structural Engineering, School of Civil and Environmental Engineering, Univ. of Adelaide, South Australia 5005, Australia (corresponding author).
3. Senior Research Associate, School of Civil and Environmental Engineering, Univ. of Adelaide, South Australia 5005, Australia.
4. Lecturer, School of Civil and Environmental Engineering, Univ. of Adelaide, South Australia 5005, Australia.