1. Ph.D. Student, School of Civil and Transportation Engineering, Hebei Univ. of Technology, Tianjian 300401, China.
2. Professor, School of Civil and Transportation Engineering, Hebei Univ. of Technology, Tianjian 300401, China (corresponding author).
3. Assistant Professor, School of Engineering, Tarleton State Univ., Stephenville, TX 76402.
4. Lecturer, School of Civil and Transportation Engineering, Hebei Univ. of Technology, Tianjian 300401, China.
5. Post-doctor, School of Civil and Transportation Engineering, Hebei Univ. of Technology, Tianjian 300401, China.
6. Professor, School of Civil and Transportation Engineering, Hebei Univ. of Technology, Tianjian 300401, China.