【摘要】：隨著我國公路建設(shè)的迅速發(fā)展，道路質(zhì)量檢測任務(wù)日益加重，傳統(tǒng)的路基路面質(zhì)量檢測方法在應(yīng)對如此龐大的工作量時存在一定的局限性，尤其是對路面結(jié)構(gòu)層內(nèi)部隱性病害的檢測，因此本文提出采用探地雷達(Ground Penetrating Radar GPR)技術(shù)對路面隱性病害進行無損探傷。 本文在探地雷達的應(yīng)用研究中，首先介紹了探地雷達的系統(tǒng)組成以及工作原理；從物理學(xué)的角度簡要分析了電磁波傳播特性與介電常數(shù)之間的相關(guān)關(guān)系；文中還通過系統(tǒng)的計算方法對應(yīng)用中的技術(shù)參數(shù)進行確定，并且對目前主要的數(shù)據(jù)處理方法、病害特征識別做了簡要闡述；其次對比分析了傳統(tǒng)的檢測方法，表明探地雷達技術(shù)具有速度快、精度高、信息量大、自動化程度高、可以無損連續(xù)檢測的優(yōu)勢特點。針對目前路面隱性病害檢測的難題，本文提出在含水狀態(tài)下對瀝青路面進行隱性探傷，利用水為檢測介質(zhì)間接反映路面結(jié)構(gòu)層間狀況。從課題的要求和工程實際出發(fā)，，設(shè)計了一系列試驗?zāi)Ｐ�，分別對瀝青路面隱性坑槽和復(fù)合式路面隱性病害進行了模擬探傷，在充分的理論支撐前提下，通過試驗證明了該方法的可行性，同時對比分析了干燥狀態(tài)下和含水狀態(tài)下的試驗結(jié)果，表明在含水狀態(tài)下隱性探傷效果更明顯；最后采用該方法在青島流亭機場進行了現(xiàn)場探傷試驗，并取得了良好的效果，這對指導(dǎo)路面養(yǎng)護和維修具有十分重要的指導(dǎo)意義。
[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.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U416.217

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