1. Assistant Researcher, National Center for Research on Earthquake Engineering, 200, Sec. 3, HsinHai Rd., Taipei 10668, Taiwan.
2. Associate Professor, Dept. of Civil Engineering, De Lin Institute of Technology, 1, Ln. 380, Qingyun Rd., Tucheng District, New Taipei City 23654, Taiwan.
3. Professor, Dept. of Civil Engineering, National Taiwan Univ., 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan; Director, National Center for Research on Earthquake Engineering, 200, Sec. 3, HsinHai Rd., Taipei 10668, Taiwan (corresponding author).