Funding for this research was provided by:
National Natural Science Foundation of China (51478477, 51878668)
Guizhou Provincial Department of Transportation Foundation (2018123040)
Hunan Provincial Department of Transportation Foundation (201828)
Article History
Received: 21 December 2020
Accepted: 30 March 2021
First Online: 15 April 2021
Declarations
:
: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.