探地雷达评价水泥混凝土路面板底脱空技术研究  

Evaluation of Cement Concrete Pavement Voids Beneath Slabs by GPR

作　　者：武继文 郝新宝 Wu Jiwen;Hao Xinbao(Shuozhou National Road Project of Shanxi Luqiao Construction Management Co.,Ltd.,Shuozhou 036002,China)

机构地区：[1]山西路桥朔州国道项目建设管理有限公司,山西朔州036002

出　　处：《市政技术》2022年第6期155-160,共6页Journal of Municipal Technology

摘　　要：水泥混凝土路面板底脱空将大大降低路面的使用寿命和服务水平。基于探地雷达技术,通过GprMax软件仿真分析,探讨了探地雷达用于水泥混凝土路面板底脱空评价时的扫描图像特征。研究结果表明:充气型脱空的扫描图像在脱空界面处将产生两个方向相反的波峰,脱空高度小于0.01 m后,波形叠加后信号解析困难,将无法通过扫描图像特征识别板底脱空;充水型脱空的扫描图像的反射波较为微弱,脱空难以通过探地雷达的扫描图像来识别。Voids beneath slabs of cement concrete pavement will greatly reduce the service life and level of pavement.Based on ground penetrating radar(GPR)technology and the GprMax software,this paper analyzed the scanned images characteristics of the evaluation of voids beneath cement concrete pavement slabs by GPR.The results show that the scanned image of inflatable void will produce 2 wave peaks in opposite directions at the void interface.When the void height is less than 0.01 m,it’s difficult to analyze the signal after waveform overlapping so that the void will not be recognized by scanning iamges.The reflected wave of scanned image of water filled void is weak and the void is difficult to be recognized.

关 键 词：水泥混凝土路面 板底脱空 探地雷达 扫描图像特征 

分 类 号：U416.216[交通运输工程—道路与铁道工程]