1. School of Civil Engineering, Chang’an University, South 2nd Ring Road Middle Section, Xi’an, Shaanxi 710064, People’s Republic of China
2. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, South 2nd Ring Road Middle Section, Xi’an, Shaanxi 710064, People’s Republic of China
3. Department of Civil Engineering, Liverpool John Moores University, Peter Jost Enterprise Centre, Byrom Street, L3 3AF Liverpool, UK