基于数值分析与荷载传递相结合的方法，利用FLAC3D软件对倾斜荷载下大直径长桩的承载特性进行了研究。结果表明：荷载倾角不同，基桩承载特性不同；存在一临界角，在荷载倾角从小于临界角变化到超过临界角过程中，桩的承载特性由以竖向为主转化为以水平向为主，本研究的工况，临界角约20°。通过与前人的研究成果对比分析,发现Koumoto倾斜系数和Meyerhof包络线半经验公式都不能准确估算临界角所对应的极限承载力。

Based on numerical analysis in association with load transfer method, the bearing behaviors of large-diameter long pile under inclined loads are studied by using software FLAC3D. It’s found that the bearing behavior of pile in clay is determined by the inclination. When the inclination varies from being smaller than a critical angle to being larger than the critical angle, which is about 20° for the case in this paper, the bearing mode changes from vertical-load dominated to horizontal-load dominated.  Through comparison with previous researches, it’s found that both the inclination factor given by Koumoto and the semi-empirical envelope formula  proposed by Meyerhof can’t estimate the ultimate bearing capacity accurately.