作者单位:XIN Ming-jing,ZHANG Yu-chuan,WANG Mao-jie,XU Tian,GAO Zhi-yuan(Key Laboratory of Mechanics on Environment and Disaster in Western China,The Ministry of Education of China,Lanzhou 730000,China;Department of Mechanics and Engineering Sciences,School of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China)辛明静,张豫川,王茂杰,徐甜,高志远(西部灾害与环境力学教育部重点实验室,兰州730000;兰州大学土木工程与力学学院,兰州730000)