1. Associate Professor, Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Hong Kong (corresponding author).
2. Postdoctoral Fellow, Institute of Structural Engineering Zhejiang Univ., Hangzhou 310027, P.R. China; formerly, Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Hong Kong.
3. Professor, School of Engineering, Univ. of Western Sydney, New South Wales 1797, Australia.