高应变动力试桩法确定桩端土的极限承载力

应用高应变动力试桩法确定桩端土的极限承载力是动力触探领域中的一种好方法.运用高应变动力试桩法,可以获得桩在打入过程中的每一锤击下的桩端阻力,即桩端土对桩的端承力.用该力除以桩端的横截面积,即可求得桩端土的极限承载力.结合每一锤的贯入度(或每一锤时桩的入土深度),还可获得桩端土承载力随深度连续变化的测试结果

THE APPLICATION OF HIGH-STRAIN DYNAMIC TENTATIVE PILING TECHNIQUE TO THE DETERMINATION OF LIMITED BEARING CAPACITY OF PILE ENDPOINT SOIL

The application of high-strain dynamic tentative piling technique to determining limited bearing capacity of pile endpoint soil is a good method in the field of dynamic depth detection. Using high-strain dynamic tentative piling technique,one can obtain the pile endpoint resistance at each hit in the process of hammering, which is the bearing capacity of the pile endpoint soil against the pile. Dividing the bearing capacity by the cross section area of the pile endpoint, one can figure out the limited bearing capacity of the pile endpoint soil. In combination with the injection depth of pile at each hit, the continuous variation of the bearing capacity of the pile endpoint soil with the depth can also be calculated.