1. Research Associate, Dept. of Civil and Environmental Engineering, Waseda Univ., Shinjuku-ku, Tokyo 169-8555, Japan. ORCID: .
2. Associate Professor, Dept. of Civil and Environmental Engineering, Waseda Univ., Shinjuku-ku, Tokyo 169-8555, Japan.
3. Professor, Ph.D., Dept. of Civil and Environmental Engineering, Waseda Univ., Shinjuku-ku, Tokyo 169-8555, Japan (corresponding author).