1. Ph.D. Student, Dept. of Architecture, Kanagawa Univ., 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan.
2. Professor, Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Univ. of Technology, No. 100 Pingleyuan, Beijing 100124, China; Guest Professor, National Engineering Laboratory for High Speed Railway Construction, Central South Univ., 22 Shaoshannan Rd., Changsha 410075, China (corresponding author).
3. Professor, Dept. of Architecture, Kanagawa Univ., 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan.