Journal of the Korean Geo-Environmental Society ISSN:1598-0820(Print) 2714-1233(Online) 한국지반환경공학회 논문집

In sandy ground, pile geometry and the relative density of the soil are key factors governing load transfer characteristics acting on the pile and the associated earth pressure behavior within the ground during pile installation. Most previous studies on pile foundations have primarily focused on the evaluation of ultimate bearing capacity and load–settlement relationships to meet practical design requirements, while relatively limited attention has been paid to the direct investigation of stress evolution in the ground and load transfer mechanisms during pile penetration, as has been pointed out in earlier research, In this study, the relationship between earth pressure measured in the ground and the load applied to the pile during pile penetration is investigated through two-dimensional model tests conducted in a calibration chamber. Two pile geometries are considered: a basic straight pile and a helical pile. The relative density of the sandy ground is set to 40% and 80%, resulting in four test cases in total. By comparing and analyzing the experimental responses of the basic pile and the helical pile, this study aims to identify characteristic trends in load transfer and earth pressure behavior and to provide practical insights for pile type selection in sandy ground conditions.