探地雷达在港工混凝土结构检测中的应用研究

Study on Application of Ground Penetrating Radar in Detecting Harbor Concrete Structure

本文通过模型试验和工程应用,研究了探地雷达在港工混凝土结构检测中的应用技术。首先通过4组模型试验系统研究不同直径、不同埋深、不同间距和不同层数的钢筋对雷达接收波形特征的影响,得到了探地雷达检测混凝土结构的使用方法和适用条件。在此基础上,以某高桩码头为依托,分别应用雷达法和电磁法对混凝土构件进行了检测,发现雷达法检测准确性可满足工程要求,除此在操作性和结果的直观性上雷达法更具优势。

Model test and engineering application are adopted to study how ground penetrating radar （GPR） applies to the detection of harbor concrete structure. Firstly four model test systems show the change to the characteristic of wave received by radar against the steel bars with different diameters, embedded depth, spacing and number of layers, which deduces the method and appropriate conditions of applying GPR in detecting concrete struture. In the case, the concrete structures of one piled wharf are detected by using GPR and electromagnetic method respectively. the results show that the accuracy of GPR satisfies the engineering demand, in addition, GPR method is of operational and visual advantages.