1. School of Highway, Chang’an University, 126 South Erhuan Middle Section, Xi’an City, Shaanxi Province 710064, China
2. School of Highway, Chang’an University, Mailbox 449, 126 South Erhuan Middle Section, Xi’an City, Shaanxi Province 710064, China (Corresponding author), e-mail: wanghn@chd.edu.cn, https://orcid.org/0000-0001-9268-8073
3. School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus, Jalan Transkrian, Nibong Tebal, Penang 14300, Malaysia
4. Department of Civil and Environmental Engineering, Michigan Technological University, 1400 Townsend Dr., Houghton, MI 49931, USA