ABSTRACT
The method for soil-cement composite pile construction was developed that uses a compact mechanical agitator for pile foundations of lightweight structures. The construction machine is a mechanical agitator with an attached vibration mechanism and improved drilling capacity. The purpose of this study is to apply soil-cement composite piles, which have been conventionally designed as temporary structures, to permanent structures. The strength of soil cement is 1000~5000kN/m2 and its stiffness is lower than that of concrete piles and precast piles, it is necessary to evaluate the failure mechanism of the pile body. Therefore, centrifuge model tests focusing on the failure mechanism at the pile tip were carried out to evaluate the vertical bearing characteristics of soil-cement composite piles. According to this study, it can be said that the end bearing capacity can be related to the shape of the pile tip.
