1. Lecturer, Department of Civil Engineering, Guangzhou University, Guangzhou, China
2. Undergraduate student, Department of Civil Engineering, Guangzhou University, Guangzhou, China
3. Lecturer, Department of Civil Engineering, Guangzhou University, Guangzhou, China (corresponding author: )
4. Professor, Department of Civil Engineering, Key Laboratory of Structural Safety and Durability of China Education Ministry, Tsinghua University, Beijing, China