1. School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China, https://orcid.org/0000-0003-0954-842X (Z.Y.)
2. School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing, 100083, China (Corresponding author), e-mail: 1558564754@qq.com, http://orcid.org/0000-0001-8387-0295