(1.Department of Civil Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, Shandong,China; 2.Tianyuan Construction Group Co., Ltd., Linyi 276000, Shandong,China; 3.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; 4.Dalian CIMC Logistics Equipment Co., Ltd., Dalian 116600,Liaoning, China)
TU392.5; TU318.2