[1] Henan Univ Urban Construct, Sch Civil & Transportat Engn, Pingdingshan 467036, Peoples R China
[2] Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Peoples R China
[3] North China Univ Water Resources & Elect Power, Sch Civil Engn & Commun, Zhengzhou 450045, Peoples R China