摘要
简要介绍了超声波法进行基桩检测的基本原理;分析了基桩检测异常信号的识别方法;通过三个典型工程实例进一步探讨了基桩检测中的关键技术问题,如超声波在桩身缺陷段传播时声时(波速)、接收波振幅、接收波主频率、接收波波形等声学参数的变化。结果表明,综合利用超声波各声学参数的变化特点可有效提高基桩检测的准确性和可靠性。
The paper briefly intro the pile testing and analyzes the duces the basic principles of ultrasonic method applying to identifying method of abnormal signal in the pile testing. Furthermore, it investigates the key technical problems through three examples of typical projects, as changes of the acoustic parameters, such as acoustic time （velocity）, received wave amplitude, received wave frequency and received waveform during ultrasonic dissemi- nation. The results show that comprehensive utilization of ultrasonic changes in the characteristics of acoustic parameters can effectively improve the accuracy and reliability of pile detection.
出处
《工程地球物理学报》
2009年第5期580-584,共5页
Chinese Journal of Engineering Geophysics
关键词
基桩
超声波
混凝土缺陷
无损检测
pile
ultrasonic
concrete defects
non-- destructive testing
