[1] Lanzhou Univ, Coll Civil Engn & Mech, Rd 222 South Tianshui, Lanzhou 730000, Gansu, Peoples R China
[2] Lanzhou Univ, Key Lab Mech Disaster & Environm Western China, Minist Educ, Lanzhou 730000, Gansu, Peoples R China
[3] Chongqing Univ, Coll Civil Engn, Chongqing 400045, Peoples R China
[4] China Railway First Survey & Design Inst Grp Co Lt, Xian 710000, Shaanxi, Peoples R China