基于GPR正演技术的路面反射裂缝图像解译研究  

Image Interpretation of Pavement Reflection Crack Based on GPR Forward Modeling Technology

作　　者：罗蓉[1,2] 李冲 程博文 于晓贺 冯光乐 LUO Rong;LI Chong;CHENG Bowen;YU Xiaohe;FENG Guangle(School of Transportation,Wuhan University of Technology,Wuhan 430063,Hubei,China;Hubei Provincial Highway Engineering Technology Research Center,Wuhan 430063,Hubei,China)

机构地区：[1]武汉理工大学交通学院,湖北武汉430063 [2]湖北省公路工程技术研究中心,湖北武汉430063

出　　处：《重庆交通大学学报（自然科学版）》2023年第1期36-44,共9页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：湖北省重点研发计划项目(2020BCA085)。

摘　　要：为了解决探地雷达图像的病害识别问题,基于有限元法求解三维电磁波波动方程,并编写MATLAB代码进行数值模拟,依托汉十高速路面芯样检测数据建立三维道路真实模型,并建立多种不同损伤程度、形状的反射裂缝,分析电磁波在反射裂缝不同发展阶段的传播规律。结果表明:随着反射裂缝深度的变化,探地雷达图像存在显著的差异,反射电压与裂缝深度存在一定的线性关系,通过实际电压图像可以计算路面反射裂缝的深度。研究结果为分析高速公路路面裂缝病害图像提供理论基础。In order to solve the problem of disease identification of ground penetrating radar images,the three-dimensional electromagnetic wave equation was solved based on the finite element method,and MATLAB code was written for numerical simulation.Based on the core sample test data of the Han-Shi Expressway pavement,a three-dimensional road real model was established,and a variety of reflective cracks with different damage degrees and shapes were also established.The propagation law of electromagnetic waves in different development stages of the reflective cracks was analyzed.The results show that as the depth of the reflection crack changes,there are significant differences in GPR images,and there is a certain linear relationship between the reflection voltage and the crack depth.The actual voltage image can be used to calculate the depth of the pavement reflection crack.The research results provide a theoretical basis for the analysis of pavement crack disease images of the Han-Shi Expressway.

关 键 词：道路工程 探地雷达检测剖面 病害模型正演 反射裂缝 反射波幅 图像解译 

分 类 号：U416[交通运输工程—道路与铁道工程]