开发端承力的桩型──沉管灌注夯扩桩

A Pile That Applies End-bearing Capacity── Hammer-driven Situ Pile by Dived-Casing

通过对大量静载试验成果的统计，证明花岗岩残积上中夯扩桩在承载能力与造价上的优势。通过计算探讨夯扩桩扩头成形规律性和成形条件，并对偶然出现的桩顶质量问题提出改进措施。

Statistics through a large number of static load pile tests shows that hammer-driven pedestal piles through granite residual soil have advantages in their bearing capacity and cost. In this paper, regular patterns and prerequisites for the formulation of the expanded pedestal are studied by calculation. Measures of improvement are proposed to cope with occasional quality problems of pile caps.