1. Assistant Professor, Dept. of Civil Engineering, College of Engineering, Nihon Univ., 1 Nakagawara, Tokusada, Tamura, Koriyama, Fukushima 963-8642, Japan.
2. Professor, Dept. of Civil and Environmental Engineering, Waseda Univ., 3-4-1, Okubo, Shinjuku-Ku, Tokyo 169-8555, Japan (corresponding author). ORCID: .
3. Dept. of Civil and Environmental Engineering, Waseda Univ., 3-4-1, Okubo, Shinjuku-Ku, Tokyo 169-8555, Japan.
4. Sato Kogyo Co., Ltd., 14-10, Morinosatoaoyama, Atsugi, Kanagawa 243-0123, Japan.