基于地质雷达测算地基基础缺陷的体积研究

通过模拟实际地下基础,利用800 MHz频率中心天线的地质雷达对模型基础进行探测.对9个不同的构件所得到的波形进行研究分析,采集到9组不同的雷达频谱图.根据不同的构件尺寸,埋置深度等信息得出不同的影像面积、雷达频谱,并验证这些参数与构件实际尺寸的相关性.分别对埋深和影像面积、影像面积和构件实际体积两对关系采集到的数据用...

Volumetric Study of Foundation Defects Based on Geological Radar

The model base is detected by simulating the actual underground foundation and using a geological radar with an 800 MHz frequency center antenna. The waveforms obtained from nine different components were studied and analyzed, and nine different radar spectrum patterns were collected. According to different component sizes, embedding depth and other information, different image areas and radar spectra are obtained, and the correlation between these parameters and the actual size of the components is verified. The data collected by the two pairs of depth and image area, image area and actual volume of the component were fitted with MATLAB software. It was found that the buried depth and the image area, image area and volume were positively correlated.Enter three independent variable parameters: image area S, embedding depth d and influence coefficient K, a dependent variable volume V, and obtain the calculation formula of the three-dimensional image and actual volume by fitting. In this way, the accuracy of the actual engineering non-destructive testing is improved, and the work efficiency is improved.