1. College of Civil Engineering, Hunan Univ., Changsha 410082, China; Hunan Provincial Key Lab on Damage Diagnosis for Engineering Structures, Changsha 410082, China.
2. Associate Professor, College of Civil Engineering, Hunan Univ., Changsha 410082, China; Hunan Provincial Key Lab on Damage Diagnosis for Engineering Structures, Changsha 410082, China (corresponding author).
3. College of Civil Engineering, Hunan Univ., Changsha 410082, China.
4. Professor, College of Civil Engineering, Hunan Univ., Changsha 410082, China.