1. Distinguished Professor, Dept. of Civil Engineering, Central South Univ., Changsha, Hunan Province 410075, People’s Republic of China (corresponding author).
2. Ph.D. Student, Dept. of Civil Engineering, Fuzhou Univ., Fuzhou, Fujian Province 350002, People’s Republic of China.
3. Research Assistant, Dept. of Civil Engineering, Fuzhou Univ., Fuzhou, Fujian Province 350002, People’s Republic of China.