介绍了超声法检测混凝土密实度的方法和一般步骤,重点讨论并分析了一个典型的大桥箱形梁混凝土密实度的检测。对检测结果进行综合分析和整理后可得,超声法检测混凝土密实度的技术适应范围更宽、检测精度更高、可操作性更好。希望对同类型构件的检测方法提供一定的借鉴作用。 This paper introduced the method and general steps of ultrasonic testing for concrete compactness, and focused on the analysis and examination of the concrete compactness of a typical large box girder. The results of a comprehensive analysis and finishing available, ultrasonic detection of concrete densification technology to adapt to a wider range, higher detection accuracy, better operability. Hope that the same type of component detection methods provide some reference.