反射波法对桩身浅部缺陷的判别

THE REFLECTED WAVE METHOD USED FOR DIAGNOSIS OF THE SHALLOW－ SEATED DEFECT OF A PILE

依据应力波的动力学和运动学特征，结合施工工艺和大量的检测结果对桩身浅部的断裂、裂缝、空洞、夹泥、桩头疏松等异常信号进行判别。指出了各种缺陷的典型特征及典型曲线。旨在进一步提高对桩身浅部的测试波形分析的正确率。

Based on the dynamic and kinematic characteristics of stress wave and combined with working technique along with a large quantity of detection results,a diagnosis is conducted for the signs caused by rift,fissure,hole,intercalated mud,loose pile end,etc. from the shallow part of a pile. The typical features and curves of each defect are pointed out as to improve the analysis of detected wave from the shallow part of a pile.