本文介绍了挤扩支盘灌注桩单桩竖向承载力的不同经验公式,对各经验公式参数取值进行比较,结合对工程实例的计算结果分析,指出其中公式Ⅰ在各个实例中确定承载力的效果最好,并运用公式Ⅰ对支盘桩承载特性作了简要分析,指出三种因素对支盘桩承载特性的影响,为实际工程提供参考。 In this paper, the different empirical formulas of the vertical bearing capacity of single-piles with squeezed branch-supported cast-in-situ piles are introduced and the values ​​of the empirical formulas are compared. Based on the calculation results of the engineering examples, it is pointed out that formula I in each example determines the bearing capacity The best effect is obtained. The bearing capacity of the branch pile is analyzed by using the formula I. The influence of three factors on the bearing capacity of the branch pile is pointed out, which provides a reference for the actual project.