[1] Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China
[2] Chongqing Univ, Minist Educ, Key Lab New Technol Construct Cities Mt Area, Chongqing 400045, Peoples R China
[3] Chongqing Jiaotong Univ, Inst Geotech Engn, Chongqing 400074, Peoples R China
[4] NPO Res Inst Ground Disaster Prevent Fukui Reg, Fukui 9100004, Japan