The horizontal resistance of a steel pile installed in a soil cement column

摘要

In the case of constructing a marine structure on a soft ground, steel pipe piles were often used for the foundation. A price of the steel pile is, however, increasing year by year because of increasing demand of steel products. Therefore, a still pipe pile installed in a soil cement column has been developed. Advantages of this pile are having high performance of bearing capacity and horizontal resistance for its small radius of the pile, because the pile wears the soil cement column cast. This method, however, has not been sufficiently understood on its plastic deformation characteristics and high performances because of its short experience.In this research, a series of centrifuge model tests for the pile in a soil cement column horizontally loaded and the fiber model analyses of the pile were conducted to examine the effectiveness of the column wearing and the plastic response of the pile after yielding.As a result of these tests, it was concluded that the pile installed in a soil cement column had higher resistance to horizontally loading than a steel pipe pile without install of a column.