1. Associate Professor, College of Civil Science and Engineering, Yangzhou Univ., Yangzhou 225127, China (corresponding author).
2. Professor, School of Engineering, Univ. of Bradford, Bradford BD7 1DP, UK.
3. M.S. Candidate, College of Civil Science and Engineering, Yangzhou Univ., Yangzhou 225127, China.
4. Professor, College of Civil Science and Engineering, Yangzhou Univ., Yangzhou 225127, China.