1. Associate Researcher, Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, No. 1, North Waihuan Rd., Yanjiao, Sanhe, Hebei 065201, China (corresponding author).
2. Associate Professor, Structural Engineering Research Center, Tokyo Institute of Technology, Nagatsuta, Midori, Yokohama 226-8503, Japan.
3. Assistant Professor, Graduate School of Engineering, Dept. of Architecture, Chiba Univ., 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
4. Professor, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-M1-32 Ookayama, Meguro, Tokyo 152-8552, Japan.