The authors gratefully acknowledge the financial support offered by the National Key Research and Development Program of China (2017YFC0805307), the National Natural Science Foundation of China (51878078, 51911530215, 51838001, 51878070), the Excellent Youth Foundation of Natural Science Foundation of Hunan Province (2018JJ1026) and the Key Project of Education Department of Hunan Province (17A008). This work was also supported by the Key Project of Open Research Fund of National Engineering Laboratory of Highway Maintenance Technology (kfj150103), and the Open Fund of Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education (Changsha University of Science & Technology) (kfj170404), Open Research Fund of National Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology (kfj170104), Graduate Research Innovation Project of Hunan Province (CX20190644). Training Program for High-level Technical Personnel in Transportation Industry (2018-025).
