辽宁省高速公路沥青路面预防性养护决策及技术研究

发布时间：2018-03-26 05:35

本文选题：高速公路　切入点：沥青路面　出处：《沈阳建筑大学》2014年硕士论文

【摘要】：随着改革开放的逐步深化,我国经济和社会快速发展,为了应对日益严峻的刚性需求和交通压力,我国高速公路通车里程也不断刷新。但伴随着高速公路里程的不断增长,养护问题也随之而来。从二十世纪末开始,高速公路进入快速发展的轨道,高速公路里程快速增加,养护工作中的重点已渐渐变为发展高水平的养护技术。进入二十一世纪初以来,我国八九十年代建成的高速公路大多已经进入大、中修阶段,而我国以往的养护技术往往侧重于单方面的路面损害修复,没有考虑效能最大化和环境保护的需求,不可避免的造成能耗较大,对周围环境有较大影响。伴随着高速公路里程的不断增长,与之对应地资源消耗和环境压力也愈加严峻。这就使我们不得不考虑从以往单方面的路用性能恢复方法转变到绿色友好、低耗高产的路用性能恢复理念。无论是从施工技术方面来讲,还是从组织计划方面来讲,都对资源节约和环境保护提出了深深的思考。面对形势严峻的养护压力和环境保护诉求,基于新理念的关键养护技术逐渐提上日程。论文依托现有路面调查数据,在大量检测数据分析和实际路况调查基础上,提出了沥青路面养护的路面平整度、路面结构强度、路面车辙、路面破损四个控制指标以及车辙深度、裂缝率、横向力系数、功能性破损率四个单值触发指标,以此判别路面的养护时机,并给出界定标准。参考借鉴国内外沥青路面使用性能的研究模式,结合多年收集的数据,建立沥青路面质量衰减趋势及性能预测模型。通过路面管理系统与预防性养护技术的整合,建立辽宁省高速公路路面养护系统,为进行科学、规范的管理提供支持。对超薄磨耗层施工用粘层油和微表处施工用乳化改性沥青等路用材料进行了切实深入的研究,并结合设计施工工程实际提出了相应的技术指标。通过实际路面温度测定,得到微表处填补车辙能够增强路面高温抗变形能力的结论。进行了预防性养护技术实施前后使用效果对比评价。采用问卷调查方式,并通过计算,建立了辽宁省路面性能指数PQI各指标权重。
[Abstract]:With the gradual deepening of reform and opening up, China's economy and society are developing rapidly. In order to cope with the increasingly severe rigid demand and traffic pressure, the highway mileage of our country is constantly refreshed, but with the continuous increase of highway mileage, Since the end of the 20th century, the expressway has entered the track of rapid development, and the highway mileage has increased rapidly. Since the beginning of the 21 century, most of the highways built in the 1980s and 1990s in China have entered the stage of major, intermediate repair. However, in the past, the maintenance technology of our country often focused on the unilateral pavement damage repair, and did not consider the requirements of efficiency maximization and environmental protection, which inevitably resulted in a large amount of energy consumption. Have a great impact on the environment. With the increasing mileage of freeway, Correspondingly, resource consumption and environmental pressures are becoming more severe. This has forced us to consider a shift from a unilateral road performance recovery approach to green friendliness. The concept of road performance recovery with low consumption and high yield. Both in terms of construction technology and organizational planning, In the face of the severe maintenance pressure and environmental protection demands, the key maintenance technology based on the new concept is gradually put on the agenda. The paper relies on the existing pavement survey data. Based on the analysis of a large number of test data and the investigation of actual road conditions, four control indexes of pavement smoothness, pavement structure strength, pavement rutting, pavement damage and rutting depth, crack rate, transverse force coefficient of asphalt pavement maintenance are put forward. Four single trigger indexes of functional damage rate are used to judge the time of pavement maintenance, and the definition standard is given. Referring to the research model of asphalt pavement performance at home and abroad, combined with the data collected for many years, Through the integration of pavement management system and preventive maintenance technology, the highway pavement maintenance system of Liaoning Province is established, in order to carry out scientific research, the quality attenuation trend and performance prediction model of asphalt pavement are established. The management of the specification provides support. The material used for the construction of ultra-thin wear layer, such as viscous layer oil and emulsified modified asphalt for micro-surface construction, is studied in detail. According to the actual design and construction project, the corresponding technical indexes are put forward. It is concluded that filling ruts at the microsurfacing can enhance pavement deformation resistance at high temperature. A comparative evaluation of the application effect of preventive maintenance technology before and after implementation is carried out. A questionnaire survey is used and the results are calculated. The weight of each index of Liaoning Province pavement performance index (PQI) is established.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.6

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