1. Professor, Hunan Provincial Key Laboratory for Damage Diagnosis for Engineering Structures, Hunan Univ., Changsha 410082, Hunan, China.
2. Graduate Student, College of Civil Engineering, Hunan Univ., Changsha 410082, Hunan, China.
3. Assistant Professor, Hunan Provincial Key Laboratory for Damage Diagnosis for Engineering Structures, Hunan Univ., Changsha 410082, Hunan, China (corresponding author).