摘要
桩的动力检测中，由桩体波速及桩土相邻自振频率差可求得桩的长度，但桩的自振频率差并非常数，而与桩端土体刚度、桩侧土体剪切刚度等有关。定量计算结果表明，一般情况下若自振频率取得第四阶以上，则计算的桩长误差将低于５％．
In dynamic testing of pile the pile length can be obtained with the velocity and the difference of the natural frequencies. But the difference is not a constant, it is concerned with soil stiffness at pile end and soil shear stiffness around pile. It is indicated by computation that normally the error of pile length by calculation smaller than 5% when the forth natural frequency is obtained.
出处
《桂林工学院学报》
1996年第4期397-401,共5页
Journal of Guilin University of Technology
基金
广西区教委资助
关键词
桩长测定
误差
土体刚度
频率法
natural frequency
pile length
error
soil stiffness
