透视雷达在混凝土结构缺陷识别中的应用  

Application of Ground Penetrating Radar in the Detection of Defects in Concrete Structures

作　　者：王若晨 魏晓斌[1] 汪晟 WANG Ruochen;WEI Xiaobin;WANG Sheng(Jiangsu Testing Center for Quality of Construction Engineering Co.,Ltd.,Nanjing Jiangsu 210033,China)

机构地区：[1]江苏省建筑工程质量检测中心有限公司,江苏南京210033

出　　处：《工程质量》2025年第2期53-57,共5页Construction Quality

摘　　要：透视雷达,也被称为探地雷达或地质雷达,是一种无损检测技术。它的优势在于其强大的穿透力、丰富的接收信息以及敏锐的介电常数反应等方面。近年来,随着科技的不断进步和国内外对其应用研究的深入,透视雷达在土木工程领域得到了广泛的应用。然而,钢筋混凝土结构在透视雷达检测中面临着一些挑战,主要是钢筋干扰导致雷达成像难以识别,进而影响内部缺陷的检测。论文通过在混凝土内部预埋泡沫板的方式来实现雷达图像识别,针对不同程度的泡沫板大小和深度,采用不同的测线。同时,提出了优化处理流程的方法:选择合适的测量路径并忽略缺陷区域厚度的具体数值,以提高分析效率。Penetrating radar,also known as ground-penetrating radar or geo-radar,is a non-destructive testing technique.Its advantages lie in its powerful penetrating power,rich received information and sharp dielectric constant response.In recent years,with the continuous progress of science and technology and the in-depth research on its application at home and abroad,penetrating radar has been widely used in the field of civil engineering.However,reinforced concrete structures face a number of challenges in perspective radar detection,mainly due to the interference of steel reinforcement leading to difficult recognition of radar imaging,which in turn affects the detection of internal defects.In this paper,radar image recognition is achieved by pre-buried foam boards inside the concrete,and different measurement lines are used for different degrees of foam board size and depth.At the same time,a method to optimize the processing flow is proposed:selecting appropriate measurement paths and ignoring the specific value of the thickness of the defective area in order to improve the analysis efficiency.

关 键 词：透视雷达 电磁波 直达波 介电常数 灰度图 

分 类 号：TU317[建筑科学—结构工程]