基于探地雷达的沥青路面隐性探伤应用技术研究
发布时间：2019-06-10 09:11
【摘要】：随着我国公路建设的迅速发展，道路质量检测任务日益加重，传统的路基路面质量检测方法在应对如此庞大的工作量时存在一定的局限性，尤其是对路面结构层内部隐性病害的检测，因此本文提出采用探地雷达(Ground Penetrating Radar GPR)技术对路面隐性病害进行无损探伤。 本文在探地雷达的应用研究中，首先介绍了探地雷达的系统组成以及工作原理；从物理学的角度简要分析了电磁波传播特性与介电常数之间的相关关系；文中还通过系统的计算方法对应用中的技术参数进行确定，并且对目前主要的数据处理方法、病害特征识别做了简要阐述；其次对比分析了传统的检测方法，表明探地雷达技术具有速度快、精度高、信息量大、自动化程度高、可以无损连续检测的优势特点。针对目前路面隐性病害检测的难题，本文提出在含水状态下对沥青路面进行隐性探伤，利用水为检测介质间接反映路面结构层间状况。从课题的要求和工程实际出发，，设计了一系列试验模型，分别对沥青路面隐性坑槽和复合式路面隐性病害进行了模拟探伤，在充分的理论支撑前提下，通过试验证明了该方法的可行性，同时对比分析了干燥状态下和含水状态下的试验结果，表明在含水状态下隐性探伤效果更明显；最后采用该方法在青岛流亭机场进行了现场探伤试验，并取得了良好的效果，这对指导路面养护和维修具有十分重要的指导意义。
[Abstract]:With the rapid development of highway construction in our country, the task of road quality detection is becoming more and more serious. The traditional subgrade and pavement quality detection method has some limitations in dealing with such a huge workload. In particular, the detection of hidden diseases in pavement structure layer is carried out, so this paper proposes to use ground penetrating radar (GPR) (Ground Penetrating Radar GPR) technology to detect hidden diseases of pavement. In this paper, in the application of GPR, the system composition and working principle of GPR are introduced, and the correlation between electromagnetic wave propagation characteristics and dielectric constant is briefly analyzed from the point of view of physics. In this paper, the technical parameters in the application are determined by the systematic calculation method, and the main data processing methods and disease feature recognition are briefly described. Secondly, the traditional detection methods are compared and analyzed, which shows that the GPR technology has the advantages of fast speed, high accuracy, large amount of information, high degree of automation and non-destructive continuous testing. In view of the difficult problem of pavement hidden disease detection at present, this paper proposes to carry on the hidden flaw detection to the asphalt pavement under the condition of water cut, and uses water as the detection medium to indirectly reflect the interlaminar condition of the pavement structure. Based on the requirements of the subject and the engineering practice, a series of test models are designed to simulate the hidden potholes and composite pavement hidden diseases of asphalt pavement, and under the premise of full theoretical support, The feasibility of the method is proved by experiments, and the experimental results under dry state and water-bearing state are compared and analyzed, which shows that the hidden flaw detection effect is more obvious in the water-bearing state. Finally, the field flaw detection test is carried out at Qingdao Liuting Airport, and good results are obtained, which is of great significance to guide pavement maintenance and maintenance.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.217
本文编号：2496352
[Abstract]:With the rapid development of highway construction in our country, the task of road quality detection is becoming more and more serious. The traditional subgrade and pavement quality detection method has some limitations in dealing with such a huge workload. In particular, the detection of hidden diseases in pavement structure layer is carried out, so this paper proposes to use ground penetrating radar (GPR) (Ground Penetrating Radar GPR) technology to detect hidden diseases of pavement. In this paper, in the application of GPR, the system composition and working principle of GPR are introduced, and the correlation between electromagnetic wave propagation characteristics and dielectric constant is briefly analyzed from the point of view of physics. In this paper, the technical parameters in the application are determined by the systematic calculation method, and the main data processing methods and disease feature recognition are briefly described. Secondly, the traditional detection methods are compared and analyzed, which shows that the GPR technology has the advantages of fast speed, high accuracy, large amount of information, high degree of automation and non-destructive continuous testing. In view of the difficult problem of pavement hidden disease detection at present, this paper proposes to carry on the hidden flaw detection to the asphalt pavement under the condition of water cut, and uses water as the detection medium to indirectly reflect the interlaminar condition of the pavement structure. Based on the requirements of the subject and the engineering practice, a series of test models are designed to simulate the hidden potholes and composite pavement hidden diseases of asphalt pavement, and under the premise of full theoretical support, The feasibility of the method is proved by experiments, and the experimental results under dry state and water-bearing state are compared and analyzed, which shows that the hidden flaw detection effect is more obvious in the water-bearing state. Finally, the field flaw detection test is carried out at Qingdao Liuting Airport, and good results are obtained, which is of great significance to guide pavement maintenance and maintenance.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.217
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