1. Professor, Dept. of Civil Engineering, Univ. of Hong Kong, Pokfulam Rd., Hong Kong SAR, China (corresponding author).
2. Student, Dept. of Civil Engineering, Univ. of Hong Kong, Pokfulam Rd., Hong Kong SAR, China.
3. Chair Professor, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong SAR, China.
4. Associate Professor, Dept. of Civil Engineering, Univ. of Hong Kong, Pokfulam Rd., Hong Kong SAR, China.