1. Professor of Prestressed Structure and Vibration, Key Laboratory of Mechanics on Disaster and Environment in Western China, The Ministry of Education of China, and School of Civil Engineering and Mechanics, Lanzhou Univ., Lanzhou 730000, China.
2. Research Student, Key Laboratory of Mechanics on Disaster and Environment in Western China, The Ministry of Education of China, and School of Civil Engineering and Mechanics, Lanzhou Univ., Lanzhou 730000, China.
3. Professor of Composite Structure and Vibration, School of Civil Engineering, Chongqing Univ., Chongqing 400045, China (corresponding author).