论文部分内容阅读
采用ABAQUS有限元软件模拟基桩低应变完整性动测过程,定性分析缺陷轴向尺寸对基桩完整性判断的影响,探讨影响基桩完整性定量评价的缺陷轴向尺寸的临界长度,并给出该临界长度的表达式。结果表明:缺陷轴向尺寸临界长度与锤的材料性质及脉冲力的作用时间有关。在此基础上,对比分析缺陷轴向尺寸对不同桩身完整性系数缺陷桩评价的影响,结果表明:桩身完整性系数越大,缺陷轴向尺寸的影响越大。
ABAQUS finite element software was used to simulate the dynamic low-strain integrity of foundation piles. The qualitative analysis of the influence of axial dimension on the integrity of piles was carried out. The critical length of axial defects affecting the quantitative evaluation of piles integrity was discussed. The expression of the critical length. The results show that the critical axial length of the defect is related to the material properties of the hammer and the action time of the impulsive force. Based on this, the influence of the axial dimension of the flaws on the evaluation of different pile integrity factor defects was analyzed. The results show that the greater the integrality coefficient of the pile, the greater the influence of the axial dimension of the flaw.