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】用Ｖｅｓｉｃ球孔扩张理论对钻孔桩桩底灌浆的压密机理进行了分析，给出了计算桩端承载力的公式，同实测值进行了比较，给出了一种理论计算方法及设计原则。
The Vesic hole expansion theory is used to analyze the compaction mechanism of bored pile bottom grouting, and the formula for calculating the bearing capacity of the pile end is given. Compared with the measured values, a theoretical calculation method and design are given. in principle.