The existing methods cannot effectively obtain the response signals generated by multiple defects of the pile body, which leads to the inaccuracy of the pile foundation integrity detection results, a high-rise building pile foundation integrity detection method based on the reflected wave method is proposed. The continuous wavelet transform coefficient is used to locate the defect position of pile foundation. Referring to the positioning results, according to the material density and cross-sectional area of pile foundation, the cross-sectional force and reflected wave velocity at the defect of pile foundation are calculated. Because the stress wave will be affected by the defect of pile foundation, and the fluctuation of stress wave will affect the amplitude and phase, it can be concluded that the section impedance is related to the cross-sectional force and velocity of reflection wave. According to this characteristic, the integrity of pile foundation of high-rise building is detected by the amplitude and phase characteristics of reflected wave signal. The results show that the design method can accurately determine the defects of pile foundation, accurately classify the integrity of pile body, and the integrity test results of the method can meet the relevant engineering standards, which verifies the effectiveness of the method.

现有方法不能有效地获得由桩身多个缺陷产生的响应信号，导致桩基础完整性检测结果的准确性，提出了一种基于反射波法的高层建筑桩基础完整性检测方法。连续小波变换系数用于确定桩基的缺陷位置。参照定位结果，根据桩基的材料密度和截面积，计算桩基缺陷处的截面力和反射波速度。由于应力波会受到桩基缺陷的影响，应力波的波动会影响振幅和相位，可以得出结论，截面阻抗与反射波的截面力和速度有关。根据该特性，通过反射波信号的振幅和相位特性来检测高层建筑桩基础的完整性。结果表明，该设计方法能够准确地确定桩基的缺陷，对桩身的完整性进行准确分类，该方法的完整性测试结果符合相关工程标准，验证了该方法的有效性。