1. Department of Civil and Environmental Engineering, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan.
2. Center for Advanced Engineering Structural Assessment and Research, Public Works Research Institute, 1-6, Minamihara, Tsukuba, Ibaraki 305-8516, Japan.
3. Structure Department, Oriental Consultants Co., Ltd., 3-12-1, Honmachi, Shibuya, Tokyo 151-0071, Japan.
4. College of Science and Technology, Nihon University, 1-8-14, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8308, Japan.
5. Kajima Technical Research Institute, 2-19-1, Tobitakyu, Chofu, Tokyo 182-0036, Japan.