沥青路面预防性养护决策和后评价研究

发布时间：2018-03-28 13:25

本文选题：预防性养护　切入点：图谱分析　出处：《长安大学》2017年硕士论文

【摘要】：公路作为社会公共资产,预防性养护技术是提高公共资产的服务水平,实现其保值和增值的重要技术手段。尽管预防性养护技术已经得到广泛的应用,然而在实际应用中,决策仍然多依靠的是路面的综合指标和工程师的经验。以致难以精确把握预防性养护时机,延误养护实施。本文通过分析沥青路面病害特征并进行分类讨论,在可实施预防性养护病害类型中提出初期局部处治病害和早期整体修复病害,并对病害分别进行了图谱分析。基于病害程度和时间窗口提出了两种养护时机确定方法:基于病害程度,确定了裂缝类初期局部处治时机和裂缝率、车辙以及平整度的整体修复处治时机;基于时间窗口,确定了裂缝率、车辙和平整度三个指标的具体实施时机,并根据实际案例进行了验证。分类讨论初期局部处治病害措施和早期整体修复病害处治措施,建立了裂缝类病害处治对策集和早期整体修复病害处治对策集;针对路面早期整体修复措施,在全寿命周期成本分析的基础上,采用等寿命周期分析进行沥青路面早期整体修复措施的方案设计,在分析的基础上,确定了等寿命的长度为10年以及分析期内的措施数为三次,并给出了养护方案的确定方法。本文同时也对预防性养护效果进行后评价分析,对后评价方法进行讨论与选择,并在预防性养护的实施效果、经济效益、环境和社会影响方面进行后评价。该工作有助于分析预防性养护过程中的问题,总结预防性养护经验,为以后的预防性养护工作提供参考和借鉴。
[Abstract]:As a social public asset, preventive maintenance technology is an important technical means to improve the service level of public assets and to maintain and increase their value. Although preventive maintenance technology has been widely used, it has been applied in practice. The decision-making still depends on the comprehensive index of pavement and the experience of engineers. It is difficult to accurately grasp the opportunity of preventive maintenance and delay the implementation of maintenance. In this paper, the characteristics of asphalt pavement diseases are analyzed and discussed. Among the types of diseases that can be prevented, the initial local treatment and the early holistic repair of diseases are proposed. Based on the degree of the disease and the time window, two methods are proposed to determine the curing time: based on the degree of the disease, the local treatment time and the crack rate are determined. Based on the time window, the concrete implementation time of the three indexes of crack rate, rut and smoothness is determined. According to the actual cases, the measures of local treatment and the treatment of the disease in the early stage were discussed, and the countermeasures set for the treatment of crack disease and the set of measures for the treatment of the disease in the early stage were established. Based on the analysis of the cost of the whole pavement in the early stage, the scheme design of the whole repair measure in the early stage of asphalt pavement is carried out by using the equal life cycle analysis on the basis of the analysis. The length of equal life is 10 years and the number of measures in the analysis period is three, and the method of determining the maintenance scheme is given. At the same time, the post evaluation analysis of preventive maintenance effect is carried out, and the post evaluation method is discussed and selected. A post-evaluation of the implementation effect, economic benefits, environmental and social impact of preventive maintenance is carried out. This work is helpful to the analysis of the problems in the preventive maintenance process and to the summing up of preventive maintenance experience, For the future preventive maintenance work to provide reference and reference.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U418.6

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