通过对超长桩载荷试验的研究,分析了超长桩的承载性状与普通钻孔桩之间的区别,并总结了超长桩的承载特性及荷载传递机理:①桩长是有限度的;②桩侧摩阻力和桩端阻力发挥是不同步的;③当达到设计荷载或允许沉降时,桩侧阻力还未发挥完全;④超长桩桩端阻力所占比例极小;⑤桩侧阻力呈现出完整的抛物线形态;⑥沉降曲线为缓变型,没有明显的拐点。 Through the research on the load test of the super-long pile, the difference between the bearing behavior of the super-long pile and the ordinary bored pile is analyzed. The bearing characteristics and load transmission mechanism of the super-long pile are summarized as follows: ① The length of the pile is limited; (2) pile side frictional resistance and pile end resistance play out of synchronization; (3) when the design load or allow settlement, pile side resistance has not been fully developed; (4) the proportion of extreme pile end resistance is extremely small; Showing a complete parabolic morphology; ⑥ settlement curve for the slow type, there is no obvious inflection point.