桩基浅部缺陷测试技术的研究

Study of Defect in Shallow Part of Piles

对桩基浅部缺陷的判别一直比较困难 ,而桩基浅部缺陷的存在对工程质量有非常大的影响。为了解决此类问题 ,根据反射波法检测桩基完整性的基本原理 ,提出了一种高频激振判别桩身浅部缺陷位置的方法 ,并在试验模型和预制桩中进行了试验 ,证明了此方法效果良好。

In the field of pile detecting, it is difficult to detect the defect position of pile's shallow part, which has very great effect on the engineering quality. In order to solve these problems, based on the basic principle of the detecting pile's intactness by using reflecting wave methods, a way to detect the defect position of pile's shallow part under high frequency excitation is presented, and has been subjected to test on the samples and precast piles. The method has been proved to be effective to slove the problems.