1. Professor, Beijing Urban Transportation Infrastructure Engineering Technology Research Center, Beijing Univ. of Civil Engineering and Architecture, Beijing 100044, China.
2. Research Associate, Dept. of Civil and Environmental Engineering, Michigan Technological Univ., 1400 Townsend Dr., Houghton, MI 49931.
3. Professor, Dept. of Civil and Environmental Engineering, Michigan Technological Univ., 1400 Townsend Dr., Houghton, MI 49931 (corresponding author).
4. Key Laboratory of Advanced Civil Engineering Materials Ministry of Education, Tongji Univ., Shanghai 201804, China.
5. Beijing Urban Transportation Infrastructure Engineering Technology Research Center, Beijing Univ. of Civil Engineering and Architecture, Beijing 100044, China.
6. Professor, School of Transportation Engineering, Tongji Univ., Shanghai 201804, China.