1. Professor, Dept. of Civil Engineering, Shantou Univ., Shantou 515063, China; Professor, Guangdong Engineering Center for Structure Safety and Health Monitoring, Shantou Univ., Shantou 515063, PR China.
2. Ph.D. Candidate, Dept. of Civil Engineering, Shantou Univ., Shantou 515063, China; Lecturer, College of Road and Bridge, Zhejiang Institute of Communications, Hangzhou 311112, China.
3. Professor, College of Road and Bridge, Zhejiang Institute of Communications, Hangzhou 311112, China (corresponding author).