沥青路面使用性能评价中行驶质量与路面损坏的关系探讨

Relationship between Pavement Ride Quality and Pavement Distress in Asphalt Pavement Performance Evaluation

现有的沥青路面使用性能评价体系,通过对路面的损坏状况指数、行驶质量指数、车辙深度指数、抗滑性能指数及结构强度指数的线性加权,获得路面使用性能指数。其中,影响路面行驶质量指数的主要因素是路面平整度,而它受到如裂缝、坑槽、修补等路面损坏的影响。因此,路面行驶质量指数与路面损坏状况指数存在着某种重叠关系,但这种关系并不明确,也没能体现在现有评价模型中,这不利于更深入的理论研究及实践。于是,基于路况快速检测车获取的相关数据,应用对数变换和根式变换进行数据处理,将路面破损率和国际平整度指数的非线性回归转化为变换数据的加权线性回归,并通过各种统计量的检验求得它们的回归方程和90%置信区间;然后,结合经验计算公式,推导出路面行驶质量指数与路面损坏状况指数之间的定量关系。研究可为改善沥青路面使用性能评价体系和评价模型作参考,有利于进一步的理论研究及实践。

In existing asphalt pavement performance evaluation system,Pavement Surface Condition Index(PSCI),Riding Quality Index (RDI),Rutting Depth Index,Skidding Resistance Index and Pavement Structure Strength Index are linearly weighted to compute Pavement Quality Index.Among indexes above,RDI is mostly affected by pavement roughness,which is also influenced by damages such as cracks,potholes and repairs.Therefore,there is some uncertain overlap relationship between RDI and PSCI non-reflected in existing evaluation models,which hinder further theoretical study and practice.Thus,based on mass information obtained by rapid pavement condition detection vehicle,data processing methods such as Logarithmic and Radical transformation,non-linear regressions of damage rate and IRI are transformed to weighted linear regressions,and regression equations and 90%confidence intervals of these two indexes are figured out through a variety of statistical tests.Then,based on experience formulas computing RQI and PSCI, quantitative relationship between these two indexes is derived.Research in this paper offers a reference for improving asphalt pavement performance evaluation system and models,which is conducive to further theoretical research and practice.