1. Postgraduate Student, School of Traffic and Transportation Engineering, Changsha Univ. of Science and Technology, Changsha 410114, China.
2. Professor, School of Traffic and Transportation Engineering, Changsha Univ. of Science and Technology, Changsha 410114, China (corresponding author).
3. Ph.D. Researcher, Materials and Constructions, Dept. of Civil Engineering, KU Leuven, Campus Leuven, Leuven 3001, Belgium.
4. Assistant Professor, School of Traffic and Transportation Engineering, Changsha Univ. of Science and Technology, Changsha 410114, China.
5. Ph.D. Researcher, School of Traffic and Transportation Engineering, Changsha Univ. of Science and Technology, Changsha 410114, China.