1. Global Center for Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku 169-8555, Japan (Corresponding author), e-mail: whlxy2002@aoni.waseda.jp, https://orcid.org/0000-0001-8814-6351
2. Department of Civil Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
3. Integrated Geotechnology Institute Limited, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan