贵州山区道路冷再生沥青路面结构设计及典型结构研究
发布时间：2018-08-28 20:21
【摘要】：经过多年的发展,我国公路的大建设期已经过去,现阶段存在大量的公路需要进行养护维修,因此对养护维修的技术进行研究就势在必行。本文将结合贵州省交通局科研项目“现场冷再生技术应用研究”对现场冷再生沥青路面的路面结构进行研究。本文主要针对现场冷再生水泥稳定碎石基层沥青路面进行研究,首先阅读大量国内外文献,对该项技术在国内外的研究及应用成果进行总结汇总,为后期研究提供参考。然后对贵州省现场冷再生技术的应用状况和现有再生结构对轴载的适应性进行研究,通过对贵州省主要现场冷再生技术应用地区的全面调查,对贵州省使用的现场冷再生机械、再生工艺、再生前后的结构形式及材料、干线公路的交通特性及再生后路面的主要病害等进行了了解;通过对贵州省应用该技术较成熟的地区进行的重点调查,了解到了贵州省现有路面结构的使用状况及该类结构对交通轴载的适应性;通过前期调查与理论分析对比,对比分析了贵州省现有冷再生结构实际可承受交通量与理论可承受交通量的差别,并依此汇总了贵州省在该技术方面应用较好的经验,并对贵州省现场冷再生技术应用中存在的不足进行分析。在对贵州省冷再生技术进行了前期调查后,对冷再生沥青路面结构设计的研究将基于新建沥青路面的设计理论及方法,对其进行优化,以使其能够很好的应用于现场冷再生沥青路面的结构设计中。主要通过现场试验和室内试验对现场冷再生沥青路面结构设计参数进行了研究,并通过实验路优化现有设计方法,以此提出了结合材料组成设计的现场冷再生沥青路面结构设计流程。结合上述研究成果,对贵州省现场冷再生沥青路面典型结构进行研究,通过对交通量、现场冷再生层下基底强度对再生层设计厚度的敏感性分析,将1200万次以下交通量划分成了7个等级,将大于70MPa的基底强度划分成了4个等级;通过对现场冷再生结构中路基路面设计参数的敏感性分析,并结合前期对贵州省的调研分析结果,提出相对合理的现场冷再生沥青路面结构组合形式,并依据有限元理论对该类结构组合进行了力学分析比较;在前述基础上通过理论计算初步提出了不同基底强度等级、不同交通量等级的典型现场冷再生沥青路面结构。通过本文的研究,可为贵州省现场冷再生的沥青路面结构选取提供依据。通过适应性评价总结出了贵州省现有结构可适用的交通量,通过结构设计研究提出了优化的现场冷再生沥青路面结构设计流程,通过典型结构研究,分二、三级路提出了一百余中典型结构形式,可供工程实际选用。
[Abstract]:After years of development, the period of highway construction in China has passed, there are a large number of highways need maintenance and maintenance at this stage, so it is imperative to study the maintenance and repair technology. In this paper, the pavement structure of cold recycled asphalt pavement is studied in combination with the scientific research project of Guizhou Provincial Traffic Bureau, "Research on the Application of Cold Recycling Technology in the Field". In this paper, the field cold recycled cement stabilized macadam base asphalt pavement is studied. Firstly, a large number of domestic and foreign literatures are read, and the research and application results of the technology are summarized and summarized to provide a reference for the later research. Then, the application status of field cold regeneration technology in Guizhou province and the adaptability of existing regeneration structure to axle load are studied. Through a comprehensive investigation of the main field cold regeneration technology application areas in Guizhou Province, the field cold regeneration machinery used in Guizhou Province is studied. The regeneration technology, the structure form and material before and after regeneration, the traffic characteristics of trunk highway and the main diseases of regenerated pavement were studied. The usage of the existing pavement structure in Guizhou Province and its adaptability to traffic axle load are studied and compared with the previous investigation and theoretical analysis. This paper compares and analyzes the difference between the actual and theoretical tolerable traffic volume of the existing cold regeneration structure in Guizhou Province, and sums up the good experience in the application of this technology in Guizhou Province, according to the analysis of the difference between the actual and the theoretical tolerable traffic volume of the existing cold regenerated structure in Guizhou Province. The shortcomings in the application of cold-regeneration technology in Guizhou province were analyzed. After the preliminary investigation of cold recycling technology in Guizhou Province, the structural design of cold recycled asphalt pavement will be optimized based on the design theory and method of new asphalt pavement. In order to make it can be used in the field of cold recycled asphalt pavement structure design. The structural design parameters of cold recycled asphalt pavement were studied by field test and indoor test, and the existing design methods were optimized by experimental road. Based on this, the design flow of cold recycled asphalt pavement structure combined with material composition is put forward. Based on the above research results, the typical structure of cold recycled asphalt pavement in Guizhou province is studied. The sensitivity analysis of traffic volume and the intensity of the base under the cold regenerated layer to the design thickness of the regenerated layer is carried out. The traffic volume below 12 million times is divided into 7 grades, and the base strength greater than 70MPa is divided into 4 grades, and the sensitivity analysis of the design parameters of subgrade and pavement in the field cold regenerative structure is carried out. Combined with the previous investigation and analysis results of Guizhou Province, a relatively reasonable structure combination form of cold recycled asphalt pavement is put forward, and the mechanical analysis and comparison of this kind of structure combination are carried out according to the finite element theory. On the basis of theoretical calculation, the typical cold recycled asphalt pavement structure with different grade of base strength and traffic volume is put forward. Through the research of this paper, it can provide the basis for the selection of asphalt pavement structure of cold regeneration in Guizhou province. This paper summarizes the applicable traffic volume of the existing structure in Guizhou province through the adaptability evaluation, and puts forward the optimized design flow of the cold recycled asphalt pavement structure based on the structural design. Through the research of typical structure, it is divided into two parts. More than one hundred typical structure forms are put forward in the third class road, which can be used in engineering practice.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217
本文编号：2210507
[Abstract]:After years of development, the period of highway construction in China has passed, there are a large number of highways need maintenance and maintenance at this stage, so it is imperative to study the maintenance and repair technology. In this paper, the pavement structure of cold recycled asphalt pavement is studied in combination with the scientific research project of Guizhou Provincial Traffic Bureau, "Research on the Application of Cold Recycling Technology in the Field". In this paper, the field cold recycled cement stabilized macadam base asphalt pavement is studied. Firstly, a large number of domestic and foreign literatures are read, and the research and application results of the technology are summarized and summarized to provide a reference for the later research. Then, the application status of field cold regeneration technology in Guizhou province and the adaptability of existing regeneration structure to axle load are studied. Through a comprehensive investigation of the main field cold regeneration technology application areas in Guizhou Province, the field cold regeneration machinery used in Guizhou Province is studied. The regeneration technology, the structure form and material before and after regeneration, the traffic characteristics of trunk highway and the main diseases of regenerated pavement were studied. The usage of the existing pavement structure in Guizhou Province and its adaptability to traffic axle load are studied and compared with the previous investigation and theoretical analysis. This paper compares and analyzes the difference between the actual and theoretical tolerable traffic volume of the existing cold regeneration structure in Guizhou Province, and sums up the good experience in the application of this technology in Guizhou Province, according to the analysis of the difference between the actual and the theoretical tolerable traffic volume of the existing cold regenerated structure in Guizhou Province. The shortcomings in the application of cold-regeneration technology in Guizhou province were analyzed. After the preliminary investigation of cold recycling technology in Guizhou Province, the structural design of cold recycled asphalt pavement will be optimized based on the design theory and method of new asphalt pavement. In order to make it can be used in the field of cold recycled asphalt pavement structure design. The structural design parameters of cold recycled asphalt pavement were studied by field test and indoor test, and the existing design methods were optimized by experimental road. Based on this, the design flow of cold recycled asphalt pavement structure combined with material composition is put forward. Based on the above research results, the typical structure of cold recycled asphalt pavement in Guizhou province is studied. The sensitivity analysis of traffic volume and the intensity of the base under the cold regenerated layer to the design thickness of the regenerated layer is carried out. The traffic volume below 12 million times is divided into 7 grades, and the base strength greater than 70MPa is divided into 4 grades, and the sensitivity analysis of the design parameters of subgrade and pavement in the field cold regenerative structure is carried out. Combined with the previous investigation and analysis results of Guizhou Province, a relatively reasonable structure combination form of cold recycled asphalt pavement is put forward, and the mechanical analysis and comparison of this kind of structure combination are carried out according to the finite element theory. On the basis of theoretical calculation, the typical cold recycled asphalt pavement structure with different grade of base strength and traffic volume is put forward. Through the research of this paper, it can provide the basis for the selection of asphalt pavement structure of cold regeneration in Guizhou province. This paper summarizes the applicable traffic volume of the existing structure in Guizhou province through the adaptability evaluation, and puts forward the optimized design flow of the cold recycled asphalt pavement structure based on the structural design. Through the research of typical structure, it is divided into two parts. More than one hundred typical structure forms are put forward in the third class road, which can be used in engineering practice.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217
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