1. Research Engineer, State Key Laboratory of Safety and Health for In-Service Long Span Bridges, Jiangsu Transportation Institute Co. Ltd., 2200 Chengxin Ave., Nanjing 211112, P.R. China; and Ph.D. Candidate, Dept. of Civil Engineering, Yokohama National Univ., 79-1 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan (corresponding author).
2. Professorate Senior Engineer, Jiangsu Transportation Institute Co. Ltd., 2200 Chengxin Ave., Nanjing 211112, P.R. China.