1. Postdoctoral Fellow, Institute of Structural Engineering, Dept. of Structural, Environmental and Geomatic Engineering, ETH Zürich, CH 8093 Zürich, Switzerland; formerly, Ph.D. Student, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hong Kong, China.
2. Chair Professor of Structural Engineering, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hong Kong, China (corresponding author).
3. Lecturer, School of Civil, Mining and Environmental Engineering, Faculty of Engineering, Univ. of Wollongong, Northfields Ave., Wollongong, NSW 2522, Australia.
4. Professor, Dept. of Civil Engineering, Monash Univ., Clayton, VIC 3800, Australia.