锤击预应力管桩单桩竖向承载力的试验研究

A TENTATIVE STUDY ON VERTICAL LOAD OF SINGLE PRESTRESSED TUBE PILE WITH HAMMERING

根据某工程锤击预应力管桩的试桩资料和垂直静载荷试验，分析了管桩的打桩机理，对于桩端持力层为硬塑～坚硬的风化残积土的淤泥地区，提出了利用动力触探的实测标准贯入锤击数来计算其单桩承载力，为正确使用预应力管桩提供了依据。

Based on pile tested material concerning prestressed tube pile with hammering and vertical load test practiced in a project,this paper is aimed at analyzing the mechanism of tube pile striking.As to oozing area in which wind eroded remaining earth is hard and rough on the end of pile, the author puts forwarda proposal calculating the load of single pile with the practical hammering number monitored through power,so as to provide a basis for correct use of prestressed tube pile.