辽宁省路面预防性养护决策分析与典型技术试验验证

发布时间：2018-11-29 08:29

【摘要】：本研究依托现有路面管理系统CPMS建立并共用基础数据库,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结构强度、平整度、破损、车辙四个控制指标以及裂缝率、车辙深度、功能性破损率、横向力系数四个单值触发指标,以此确定路面的养护时机,并给出界定标准。参考借鉴国内外沥青路面性能研究模型,结合历年采集数据,建立沥青路面质量衰减趋势及性能预测模型。将路面管理系统与预防性养护技术进行整合,从而建立起辽宁省高速公路路面综合养护系统,为进行科学、规范的管理提供支持。通过几条高速公路数年的检测数据分别对负指数曲线模型、修正S型曲线模型以及孙立军教授提出的模型进行数学拟合,得出几种模型最优的拟合参数,通过的拟合参数的对比分析,可以看出负指数曲线模型能够很好地模拟路面性能指标的变化,相关系数较高。通过铺筑微表处试验路,对微表处进行加速加载试验,验证微表处技术的抗车辙能力、抗滑能力、防水能力以及与原路面的协同变形能力,得到微表处技术的路用性能结论。微表处面层具有良好的抗车辙性能、抗疲劳性能、抗水损害能力和抗滑能力,微表处改善了原路面在重复荷载条件下应力应变特性,进而提高了原路面抗疲劳特性,可较好的满足高速公路预防性养护的需要。通过对超薄磨耗层和微表处施工路段通车前后的跟踪调查和检测数据,对两种技术在预防性养护中的使用效果进行了评价。
[Abstract]:Based on the existing pavement management system CPMS to establish and share the basic database, on the basis of a large number of test data analysis and actual road condition investigation, the paper puts forward the pavement structure strength, smoothness and breakage of asphalt pavement maintenance. The four indexes of rut control, crack rate, rut depth, functional damage rate, transverse force coefficient and four single trigger indexes are used to determine the time of pavement maintenance, and the defining criteria are given. Referring to the research model of asphalt pavement performance at home and abroad and combining with the data collected over the years, the quality attenuation trend and performance prediction model of asphalt pavement are established. By integrating pavement management system with preventive maintenance technology, a comprehensive maintenance system of highway pavement in Liaoning Province is established, which provides support for scientific and standardized management. Based on the testing data of several freeways for several years, the negative exponent curve model, the modified S curve model and the model proposed by Professor Sun Lijun are fitted mathematically, and the optimal fitting parameters of several models are obtained. Through the comparison and analysis of the fitting parameters, it can be seen that the negative exponential curve model can well simulate the change of pavement performance index, and the correlation coefficient is higher. By constructing the test road of microsurfacing, the accelerated loading test was carried out on the micro-surfacing to verify the rutting resistance, skid resistance, waterproofing ability and synergistic deformation ability of the micro-surfacing technology, and the road performance conclusion of the micro-surfacing technology was obtained. The micro-surfacing has good rutting resistance, fatigue resistance, water damage resistance and skid resistance. The micro-surfacing improves the stress-strain characteristics of the original pavement under repeated load, and then improves the fatigue resistance of the original pavement. It can meet the need of highway preventive maintenance. The application effect of the two technologies in preventive maintenance is evaluated through the tracking investigation and testing data before and after the opening of the ultra-thin wear layer and micro-surface construction section.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U418.6

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