高速公路沥青路面车辙病害调查及维修处治技术方案研究

发布时间：2018-05-25 20:45

本文选题：早期车辙 + 沥青层厚度　；参考：《长安大学》2015年硕士论文

【摘要】：车辙是我国高速公路沥青路面早期破坏的最重要形式。沥青路面早期车辙的产生是多因素综合作用的结果,主要包括车辆荷载、自然气候等外界因素及混合料自身抗变形能力、结构组成等内在因素的影响。目前沥青路面车辙病害的防治,多从优化路面结构组成和提高沥青混合料的高温抗变形能力方面入手。本论文以广东省某高速公路沥青路面作为依托工程,综合考虑路面结构组成和混合料抗变形能力,提出了基于车辙深度的旧路面维修处治方案,并结合试验路铺筑,验证和调整旧路面处治结构方案。主要研究成果如下:1.通过对依托工程沥青路面早期车辙病害进行调查,调查结果显示,超车道位置车辙较轻,而主车道及重车道位置车辙病害严重,且路面车辙多发生于上、中面层。2.采取现场检测、室内试验及有限元分析相结合的手段,对沥青路面早期车辙病害产生原因进行分析,得出沥青层总厚度偏薄、混合料力学强度不足、空隙率偏小、抗变形能力差及结构层间粘结效果差,是依托工程沥青路面车辙产生的重要原因。3.综合考虑混合料的抗变形能力、沥青层厚度、病害处治效果、工程建设经济性及环保效益,提出了基于不同车辙深度的旧路面维修处治技术方案。4.选择代表性路段,进行试验路段的铺筑,跟踪观测试验路车辙深度及混合料性能随时间的变化规律,根据观测结果,对上述旧路面维修处治技术方案进行了调整和完善。
[Abstract]:Rutting is the most important form of early damage of highway asphalt pavement in China. The early rutting of asphalt pavement is the result of multiple factors, including the external factors such as vehicle load, natural climate, and internal factors, such as the resistance to deformation of the mixture itself, the composition of the structure and so on. At present, the prevention and cure of rutting disease of asphalt pavement are mainly from optimizing the pavement structure and improving the high temperature deformation resistance of asphalt mixture. Based on the asphalt pavement of a highway in Guangdong province and considering the pavement structure and the anti-deformation ability of the mixture, this paper puts forward the maintenance and treatment scheme of the old pavement based on the rutting depth, and combines with the paving of the test road. Verify and adjust the old pavement treatment structure. The main research results are as follows: 1. Through the investigation on the early rutting disease of asphalt pavement in the relying engineering, the results show that the rutting of overtaking road is lighter, while the rutting disease of main lane and heavy lane is serious, and the rutting of pavement occurs mostly in the upper layer, middle surface layer. 2. By means of field test, laboratory test and finite element analysis, the causes of early rutting diseases of asphalt pavement are analyzed. The results show that the total thickness of asphalt layer is thin, the mechanical strength of mixture is insufficient, and the void ratio is small. Poor deformability and poor bond effect between structures are the important reasons for rutting of asphalt pavement relying on engineering. Considering the anti-deformation ability of mixture, the thickness of asphalt layer, the effect of disease treatment, the economy of engineering construction and the benefit of environmental protection, the technical scheme of maintenance and treatment of old pavement based on different rutting depth is put forward. The typical road sections are selected to build the test sections, and the rutting depth and mixture performance of the test roads are observed and observed with time. According to the observation results, the technical schemes for the maintenance and treatment of the old pavement mentioned above are adjusted and improved.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217;U418.6

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