LIU Fang1,2,XIA Hongshan1,AI Jun3,LIU Li4
(1.College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;2.College of Architecture and Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China;3.Department of Civil Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;4.School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)