沥青路面使用性能评价模型与性能评价案例分析

为了客观准确了解沥青路面的实际使用性能,以便及时进行沥青路面管理与维修养护,依据检测数据对沥青路面进行了使用性能评价研究,即将主成分分析法与层次分析法相结合,建立了基于主成分-层次分析法的评价模型,并进行了评价案例分析。本研究以荣乌高速保定段2016~2019年的路面定检数据为基础,首先用主成分分析法对性能指标归类和预处理后的检测数据进行主成分提取,建立判断矩阵,再用层次分析法对各指标赋予权重系数,得到上下行路面的使用性能评价模型。选用荣乌高速检测数据进行了模型验证,并与现行《公路技术状况评定标准》评价结果相比较,评价等级高于《标准》的路段样本比例约为0.34%,低于《标准》的比例约为6.83%。本研究的评价结果更能够反映路面的实际衰变特性。

Asphalt Pavement Performance Evaluation Model and Evaluation Case Analysis

In order to accurately know the actual service performance of asphalt pavements so to timely carry out asphalt pavement management and maintenance, a study on evaluating the performance of asphalt pavement based on test data conducted: combing the principal component analysis(PCA) method with the analytic hierarchy process(AHP) to establish the PCA-AHP model for evaluation of asphalt pavement and conduct evaluation case analysis. The study took the road inspection data of the Baoding section of the Rongwu Expressway from 2016 to 2019 as the basis, first used the PCA method to conduct the principal component extraction of the performance index classification and preprocessing test data was carried out to establish a judgment matrix; and then based on the level analysis, the method assigns weight coefficients to each index and obtained the performance evaluation model of up and down roads. The Rongwu Expressway test data was selected for model verification and compared with the evaluation results of the current "Highway Technical Condition Evaluation Standard", the sample proportion of road sections with an evaluation grade higher than the "Standard" was about 0.34%, and the proportion below the "Standard" 6.83%. The evaluation method in this paper can better reflect the actual decay characteristics of the road surface.