1. Professor, School of Civil Engineering, Xi’an Univ. of Architecture and Technology, 13#, Yanta Rd., Beilin District, Xi’an, 710055, China.
2. Ph.D. Candidate, School of Civil Engineering, Xi’an Univ. of Architecture and Technology, 13#, Yanta Rd., Beilin District, Xi’an, 710055, China (corresponding author).