1. Associate Professor, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hunghom, Hong Kong.
2. Assistant Professor, Dept. of Civil Engineering, Zhejiang Univ., Zhejiang, China. E-mail: huyayuan@zju.edu.cn
3. Ph.D. Student, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hunghom, Hong Kong.