1. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China, https://orcid.org/0000-0001-5636-7192 (J.J.)
2. Institute of Highway, Ministry of Transport, No. 8 Xitucheng Rd., Haidian District, Beijing 100088, China
3. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China (Corresponding author), e-mail: lilihui0451@163.com, https://orcid.org/0000-0002-5612-3267
4. Key Highway Construction Project Management Center of Tibet Autonomous Region, Lhasa 850015, China