结合焦郑高速公路钻孔灌注桩的超声波检测,对超声波检测的原理、方法以及桩身缺陷的判定进行了介绍和分析,通过实例证明超声波检测法能准确判断出桩身缺陷的位置和范围,并能对缺陷严重程度做出评价,是检测灌注桩桩身质量的一种较好方法。 Combined with ultrasonic testing of bored piles in Jiaozheng Expressway, the principle and method of ultrasonic testing as well as the determination of pile defects are introduced and analyzed. The example shows that ultrasonic testing can accurately determine the location and scope of pile defects, And to evaluate the severity of defects, is a good way to detect the quality of the pile.