1. Assoc. Prof., Dept. of Struct. Engrg., Southeast Univ., Nanjing, China.
2. Prof., Dept. of Civ. and Struct. Engrg., The Hong Kong Polytechnic Univ., Hong Kong, China. E-mail: cejgteng@polyu.edu.hk
3. Asst. Prof., Dept. of Civ. and Struct. Engrg., The Hong Kong Polytechnic Univ., Hong Kong, China.
4. Prof., Dept. of Struct. Engrg., Southeast Univ., Nanjing, China.