西铜高速公路病害分析及路面性能评价研究

发布时间：2018-06-27 17:41

本文选题：病害分布 + 裂缝　；参考：《长安大学》2015年硕士论文

【摘要】：随着我国公路建设,特别是高速公路建设的快速发展,我国的高速公路通车里程也在逐年攀升,同时也造成公路养护维修任务不断加重,养护方面研究的需求越来越迫切,如何进行科学养护,能否做到安全、高效、高质量地进行养护作业,且有效地降低成本完成养护任务更是至关重要。本文基于西铜高速公路的整治维修工程,对西铜高速公路K-2+150~K82+146路段上下行车道和超车道路面进行现场调查、检测分析,归纳得出路面裂缝、车辙等各病害规律及成因。介绍了我国高速公路沥青路面使用性能状况指标及其判断标准,基于我国沥青路面综合性能评价模型,并提出模糊数学模型进行评价。依据路面病害调查结果以及路面状况评价数据,制定了西铜高速公路的整治措施。根据调查数据对路面产生病害分布规律与路面性能评价进行了分析,研究成果如下:1)归纳总结了西铜高速公路各种病害的分布特点和规律。其中病害主要为横向裂缝、纵向裂缝、网裂、坑槽、车辙。纵缝、横缝的分布波动性较大且很不均匀,横缝数量远远大于纵缝数量。同时全线均呈现出不同程度的车辙,上下行车道车辙较超车道引起的车辙病害要小。2)从裂缝类、松散类、变形类三方面对西铜高速公路病害成因进行了分析,结果表明:本路段横向裂缝主要是由于基层反射裂缝作用下导致的,纵向裂缝的产生主要是由于路面剪切破坏引起的失稳性车辙。而车辙产生主要是由于过重的形成荷载造成。3)分析现有路用性能综合评价体系各个分项评价指标、评价公式,从功能性能方面,进一步细化评价指标。提出了应用模糊函数对沥青路面性能进行综合评价,并以K31+000~K41+000路段为实例进行模糊评价,评价结果与现有评价方法相符和。该评价方法能够应用于高速公路养护决策中路面使用性能的综合评价中。4)对西铜高速公路进行整治设计,提出整治方案与道路病害处理方法。其中以SBR改性乳化沥青和密封胶对路面进行横向裂缝和纵向裂缝修补;对于严重裂缝、坑槽等病害,采用铣刨16cm路面结构后,铺10cmATB—25下面层,在铺筑6cm AC-20C沥青中面层和4cmAC-13C的方法进行修补处理。
[Abstract]:With the rapid development of highway construction in China, especially the highway construction, the mileage of freeway traffic is rising year by year. At the same time, the task of highway maintenance and maintenance is becoming more and more serious, and the need for maintenance research is becoming more and more urgent. How to carry out scientific maintenance, whether it can be safe, efficient, high quality maintenance operation, and effectively reduce the cost to complete the maintenance task is even more important. Based on the renovation and maintenance project of Xi-Cu Expressway, this paper investigates the upper and lower carriageways and overtaking roads of Xi-Cu Expressway K-2 150 and K82 146 on the spot, detects and analyses, and concludes the rules and causes of various diseases such as pavement cracks, ruts and so on. This paper introduces the performance index and judgment standard of expressway asphalt pavement in China, based on the comprehensive performance evaluation model of asphalt pavement in China, and puts forward a fuzzy mathematical model for evaluation. According to the survey results of pavement diseases and the evaluation data of pavement condition, the improvement measures of Xi-Tong Expressway were established. Based on the investigation data, the distribution law of pavement diseases and the evaluation of pavement performance are analyzed. The research results are as follows: 1) the distribution characteristics and laws of various diseases in Xi-Cu Expressway are summarized and summarized. The main diseases are transverse cracks, longitudinal cracks, net cracks, pits, ruts. The distribution of longitudinal and transverse joints is large and uneven, and the number of transverse joints is much larger than the number of longitudinal joints. At the same time, all the tracks show different degrees of rutting, and the rutting disease caused by the upper and lower lane ruts is smaller than that caused by overtaking roads (.2). The causes of the diseases of Xi-Cu Expressway are analyzed from three aspects: crack type, loose type and deformation type. The results show that the transverse cracks in this section are mainly caused by the reflection cracks of the base course, and the longitudinal cracks are mainly caused by the unstable ruts caused by the shear failure of the pavement. The rutting is mainly caused by heavy load. 3) the evaluation index and formula of the existing comprehensive evaluation system of road performance are analyzed, and the evaluation index is further refined from the aspect of functional performance. The fuzzy function is used to evaluate the performance of asphalt pavement. Taking K31000 / K41,000 as an example, the evaluation results are consistent with the existing evaluation methods. The evaluation method can be applied to the comprehensive evaluation of pavement performance in expressway maintenance decision. The pavement was repaired with SBR modified emulsified asphalt and sealant for transverse and longitudinal cracks, and for serious cracks, potholes and other diseases, after milling and planing 16cm pavement structure, 10 cm ATB-25 lower layer was laid. The method of repairing 6cm AC-20C asphalt middle surface and 4 cmAC-13C was carried out.
【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】：U418

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