1. Associate Professor, Dept. of Civil Engineering, Foshan Univ., Foshan 528000, China.
2. Senior Research Fellow, Faculty of Civil Engineering, Vilnius Gediminas Technical Univ., Vilnius LT-10223, Lithuania; Dept. of Civil Engineering, Univ. of Hong Kong, Hong Kong 999077, China (corresponding author).
3. Professor, Dept. of Civil Engineering, Univ. of Hong Kong, Hong Kong 999077, China.