1. Distinguished Professor, Dept. of Civil Engineering, Central South Univ., Changsha, Hunan Province 410075, People’s Republic of China (corresponding author). E-mail: renwx@mail.csu.edu.cn; formerly, Gledden Senior Fellow, Univ. of Western Australia, WA 6009, Australia.
2. Professor, Dept. of Civil Engineering, Zhengzhou Univ., Zhengzhou 450002, People’s Republic of China.
3. Associate Professor, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong.
4. Professor, School of Civil and Resource Engineering, Univ. of Western Australia, WA 6009, Australia.