基桩质量与承载力低应变动测技术及其应用

The low strain dynamic measurement technology of foundation pile quality and capacity and its application

阐述了基桩低应变动测技术的基本原理 ,分别介绍了反射波法检测桩基完整性和频率—初速度法确定单桩承载力的技术要点。具体应用实例表明 ,该方法具有快速、无损等优点 ,不但可以有效检测出桩身缺陷 ,而且可以由频率—初速度法确定单桩承载力。与静载试验结果非常接近 ,相对误差小于 15 %。

The principle of low strain dynamic measuremen t technology is described, and main technical points that reflect wave method in spects pile integrality and frequency-initial velocity method conferms single pile capacity are introduced. The result approaches static load experimentation very much, and relative error is less than 15 %.