LU Chenggong1,WEI Zhiqiang2,QIAO Hongxia1,3?覮,LI Kan1,LI Qiong1,QIAO Guobin1
(1. School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,China; 2. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology,Lanzhou 730050,China; 3. Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology,Lanzhou 730050,China)