1. Professor, Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Nangang District, Harbin 150090, China.
2. Ph.D. Candidate, Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Nangang District, Harbin 150090, China.
3. Ph.D. School of Civil Engineering and Architecture, Anhui Univ. of Technology, Maanshan 243032, China (corresponding author).