1. Professor, Dept. of Civil Engineering, Guangzhou Univ., Guangzhou, Guangdong 510006, China.
2. Dept. of Civil Engineering, Guangzhou Univ., Guangzhou, Guangdong 510006, China (corresponding author).
3. Dept. of Civil Engineering, Guangzhou Univ., Guangzhou, Guangdong 510006, China.
4. Assistant Professor, College of Art and Design, Nanjing Tech Univ., Nanjing, Jiangsu 210000, China.