单桩抗拔静载极限载荷试验方法与应用

The method and application of utilizing critical uplift static load tests for single pile

基桩抗拔承载力主要通过基拔静载试验来确定。为了更好的了解基桩抗拔承载力发挥情况,可以采用基桩极限载荷试验。基桩抗拔破坏性试验存在较多的不确定性,难度较高,危险性较大,故在实际工程中应用较少。本文基于某抗拔试桩工程,分别对预制管桩、混凝土灌注桩概述常规破坏性试验、大吨位极限抗拔静载试验的方法与关键问题,试验结果可作为本地区桩基础设计依据,试验方法对同类试验有较好的参考意义。

At present, the bearing capacity of single pile is by uplift static load tests. And we could know more about the working characteristics of single pile by utilizing critical load tests whicn is less application in practice. In this paper, we do some reach about the utilizing critical load tests in a trial driving project. The results of utilizing critical load tests have significance in providing guidance to the l bearing capacity of single pile.