GPR在张花高速公路结构层厚度控制中的应用

Application of Structure Layer Thickness Control by GPR on Zhanghua Expressway

路面结构厚度对路面受力有很大影响,为了确保结构层厚度的一致性,开展结构层厚度检测是很有必要的。在对比分析传统钻芯法与探地雷达(GPR)检测方法的基础上,介绍了GPR的检测原理,结合张花高速公路工程建设,采用GPR对工程中实时铺筑的路面结构层进行厚度检测并分析检测结果,同时结合钻芯法对检测结果进行对比验证,对比结果证明GPR检测结果精确,且通过进一步分析GPR检测成果,对工程质量的动态控制起到了有效的帮助作用,证明GPR是一种针对公路结构层厚度有效的快速无损检测方法,可在工程建设中推广应用。

The thickness of the pavement structure has a great influence on the pavement stress,in order to ensure consistency of structure layer thickness,it＇ s necessary to carry out structural layer thickness test.In this paper,on the basis of comparison about the traditional core drilling method and detection method about ground penetrating radar （GPR）,introduces about the principle of the GPR detection,and using GPR to take the thickness detection aim at the real-time paving pavement structure layer and analysis of test results combined with the engineering of Zhanghua expressway.Then use the core drilling method to demonstrate the detection result of GPR.The result of demonstration showed that the detection result of GPR is accurate.The study proved that GPR played an effective help about the dynamic control in the project quality,and GPR is a rapid non-destructive testing method with respect to the road structure layer thickness control.