1. College of Transportation Engineering, Key Laboratory of road and traffic engineering of Ministry of Education; Tongji University; Shanghai 201804 P. R. China
2. School of Materials Science and Engineering, Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education; Tongji University; Shanghai 201804 P. R. China
3. Broadvision Engineering Consultants; National Engineering Laboratory for Land Transport Meteorological Disaster Control Technology; Kunming 650041 China