【摘要】 通过数值计算与实验速度曲线的对比分析研究 ,提出了计算不同点激励速度峰值时间差的关系式 ,并从振型的角度解释了管桩顶面不同测点处高频干扰随加载脉冲变宽时的衰减现象。本文还对缺陷管桩波形变化进行了一些研究。更多还原

【Abstract】 In this paper,based on the comparison and analysis of velocity curves got from tests or numerical calculation,a formula is obtained for time difference among the initial velocity signals at different points.From the viewpoint of vibration mode,the fact is explained that high frequency disturbing signals at different points are weakened and changed when the load impulse changes.At last some signals from defect pipe piles are studied.更多还原