同步碎石封层技术在云南国省道干线公路养护中的应用研究

发布时间：2018-12-25 10:02

【摘要】：云南国省干线公路养护面临山区地形复杂、交通量大、降雨量丰富等客观因素,随着同步碎石封层技术的发展,云南将这项技术全面推广,积极的预防了路面早期病害,较好的提升了路况质量,有效的缓解了养护资金压力。本文结合云南国省干线公路的养护条件,认真分析了原材料技术要求,并经过相关试验和应用分析,在此基础上提出了质量控制标准。在借鉴国内外应用技术成果的前提下,结合实际应用分析了病害形成的原因、影响质量的因素,提出了合理的养护施工控制方法。根据我省国省干线主要用于表面封层的情况,首先对石料、沥青、级配进行试验分析,提出符合云南的石料粒径、沥青选择、最佳沥青用量、最佳碎石撒布率的要求；其次对养护应用中出现的病害进行分析,提出了同步碎石封层路面病害的防治对策；再次根据养护病害提出了粘结强度这一重要指标,对沥青用量、沥青种类、养护时间进行敏感性分析,研究了同步碎石封层抗滑性、渗水性能,并结合试验分析了路用性能的改善效果；最后研究了养护施工技术,分析了我省沥青进料量、喷油嘴角度、施工长度等关键技术,进而提出了我省质量检测方法和标准；同时对我省实施方案进行了经济费用效益分析,并进行了示例计算。
[Abstract]:The maintainance of trunk roads in Yunnan Province is faced with the objective factors such as complex terrain, large traffic volume, abundant rainfall and other objective factors. With the development of synchronous gravel sealing technology, Yunnan has comprehensively popularized this technology and actively prevented the early disease of road surface. Better improve the quality of road conditions, effective relief of the maintenance fund pressure. This paper analyzes the technical requirements of raw materials and puts forward the quality control standard on the basis of the maintenance conditions of the trunk roads in Yunnan province and through the relevant tests and application analysis. On the premise of drawing lessons from the domestic and foreign applied technical achievements, the causes of the disease formation and the factors affecting the quality are analyzed in combination with the practical application, and a reasonable maintenance construction control method is put forward. According to the condition that the trunk line of our province is mainly used for the surface sealing layer, first of all, the test and analysis of stone material, asphalt and gradation are carried out, and the requirements of stone particle size, asphalt selection, optimum asphalt dosage, and the best distribution rate of crushed stone in Yunnan are put forward. Secondly, the paper analyzes the diseases in the maintenance and application, and puts forward the prevention and cure countermeasures of the pavement diseases of the synchronous crushed stone seal. Thirdly, according to the curing disease, this paper puts forward the important index of bond strength, analyzes the sensitivity of asphalt dosage, asphalt type and curing time, and studies the skid resistance and water permeability of the sealing layer of synchronous macadam. The improvement effect of road performance is also analyzed in combination with the test. Finally, the maintenance construction technology is studied, and the key technologies, such as asphalt feed quantity, nozzle angle and construction length, are analyzed, and the quality testing methods and standards are put forward. At the same time, the economic, cost and benefit analysis of the implementation scheme of our province is carried out, and an example calculation is carried out.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.6

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