【作者】 刘栋；

【导师】 赵一丁；

【作者基本信息】 东北大学 ， 控制理论与控制工程， 2008， 硕士

【摘要】 随着我国高等级公路建设的迅速发展,路面在公路投资方面所占的份额越来越大,路面质量的好坏和使用效果直接影响着公路的整体质量,使用寿命也直接影响着公路的投资效益和公路质量形象。在新建道路迅速增加的同时,道路质量的检测任务日益加重,道路后期维护过程中,路况质量评价的工作量也急剧增大。传统的检测方法测点随机,密度稀,速度慢,且对路面有破坏,难以准确全面地发现道路内部存在的隐性病害,往往容易导致道路破损加剧。路面雷达检测技术是近年来国际上新发展起来的一项新技术,它依靠发射高频或超高频电磁波和接收其从目标反射的回波来获取目标的信息。其作为一种非接触、非破损的路面检测技术,它不仅检测精度高、费用低、检测内容丰富,而且检测速度快,在很短的时间内,就能计算出所需要的信息。这些优点使得探地雷达在高等级公路质量检测中发挥的作用日益显著。本文对GPR作了较全面的分析,介绍了探地雷达的发展过程、设备组成与探测原理,并依据电磁场理论的基本分析方法,对地下回波以及电磁波在公路和多层介质中的传播进行了定性分析与总结,以期对探地雷达数据处理软件的设计开发提供帮助;重点讲述了探地雷达数据处理的基本方法,并给出了具体的处理方法步骤和处理结果实例,并以此为基础开发了基于虚拟仪器软件平台开发的数据处理软件和面向对象的Windows开发平台的报表打印软件;最后介绍了利用钻孔取芯法确定了秦皇岛地区的沥青路面和水泥混凝土路面的介电常数推荐范围和推荐值,并对探地雷达数据处理的过程和结果进行了分析。分析结果表明探地雷达应用于道路检测是相当准确而可靠的,其快速、无损检测的优势非常明显,数据处理软件的分析精度也达到了设计要求。更多还原

【Abstract】 With the great development of highway construction in the China, pavement investment has occupied a big part of road and highway investment ,at the same time, pavement quality affects the total quality of highway, and pavement usage life span directly has an effect on the investment benefit and the quality of highway. The construction speed of highway increases rapidly, at the same time, the path quality examination duty aggravates day by day, and the load of roads evaluation also increases quickly in the maintenance. Traditional method has many disadvantages, such as inefficiency, tiring, slow speed of evaluation etc. Especially, the number of measuring point is too little to give accurate and comprehensive result of the interior recessive diseases of highway. Beside this, the traditional method leads destruction to the road surface, which will exacerbate the deterioration of highway.Pavement radar detection technology is a new development technologies in the international community recent years, it relies on high-frequency or UHF launch and receive electromagnetic waves reflected from the target echo to obtain objective information. As a non-contact, non-damaged road surface detection technology, it is not only detection of high precision, low-cost, rich content detection and faster detection, but also in a very short period of time, we can calculate the required information. These advantages make ground-penetrating radar in the role of the highway quality testing increasingly significant.In this paper, a systematical study was done for the engineering problem using GPR to evaluate pavement structure. The results are as follows:1)A detailed narration is concerned about GPR’s makeup and exploration theory;2)There is a qualitative analysis and a summarization about subterranean reflected signals and the electromagnetic wave which spread in the road and the multi-media according to the basic theories of electromagnetic, it provides the help to develop the radar-data processing software;3) Attentions have focused on the basic methods of the GPR’s data processing, and as the basis for the development of data processing software which was developed by the virtual instrument software platform, and the report form printing software which was developed by the object-oriented Windows development platform;4) gave the recommendation Dielectric Constant scope and the Dielectric Constant recommended of the asphalt pavement and cement concrete pavement in Qinhuangdao area based on the Core drilling methods,and analyzed the results of the ground-penetrating radar data processing. The results showed that it is accurate and reliable for applying GPR to inspection of highway, its advantages of nondestructive and swiftness are very distinct, the data-processing software has reached the design requirements.更多还原