[Luo, Yaofei; Xie, Xiangbing] Zhengzhou Univ Aeronaut, Sch Civil Engn & Architecture, Zhengzhou 450046, Henan, Peoples R China.
[Yang, Jianhua; Luo, Yaofei; Li, Peilong] Changan Univ, Minist Transport, Key Lab Rd Struct & Mat, Xian 710064, Shaanxi, Peoples R China.
[Zhang, Ke] Fuyang Normal Univ, Coll Informat Engn, Fuyang 236041, Anhui, Peoples R China.
[Zhang, Ke] Changsha Univ Sci & Technol, Natl Engn Lab Highway Maintenance Technol, Changsha 410114, Hunan, Peoples R China.