Nagai H, Nakamura K. SHAFT RESISTANCE MECHANISM FOR PILES CLOSE TO BACKFILLED SAND AND ITS EVALUATION. INTERNATIONAL JOURNAL OF GEOMATE [Internet]. 2022 Oct. 30 [cited 2024 Apr. 20];23(98):84-91. Available from: https://geomatejournal.com/geomate/article/view/3461