1. Professor, Faculty of Infrastructure Engineering, Dalian Univ. of Technology, Dalian, Liaoning 116024, China (corresponding author).
2. Ph.D. Candidate, Faculty of Infrastructure Engineering, Dalian Univ. of Technology, Dalian, Liaoning 116024, China.
3. Professor, Faculty of Infrastructure Engineering, Dalian Univ. of Technology, Dalian, Liaoning 116024, China.