X形桩侧摩阻力分布特性研究

X-section concrete pile is a new type of pile derived from the traditional round pile. Based on the principle of enlarging perimeter with the same section area, the new pile is developed by changing the convex of circular-section to concave. Due to the special nature of the pile section, the different area of X-section cross-section squeeze the soil, and its skin friction distribution is complicated than circular pile. This paper presents the uneven distribution of the skin friction through the calculation model of special shaped pile. Three key control sectional parameters such as outsourcing diameter, open space, and open arc angle are considered under the same condition. The result shows that the skin fiction increases with the increasing of outsourcing diameter and the reducing of open arc angle, the affection of open space can be ignored. The tip resistance under soil-compacting effect is also calculated.