路面设计的最终判断依据是路面使用性能 ,而路面性能参数测定值往往具有较大的随机性和变异性 ,为了能够深入了解沥青混凝土路面性能参数的特点 ,并为高速公路路面评价、基于路面性能的路面设计方法和理论研究提供前期研究基础 ,对路面使用性能参数进行有计划地采集并研究 ,分析其概率统计特性都是非常重要和必需的基础性工作。依托沈阳～大连高速公路多年路况普查测定的大量数据 ,依据可靠性数学的基本理论并运用数理统计的方法 ,编制了分析程序 ,对高速公路沥青混凝土路面使用性能各参数的概率分布模型、变异水平及演化规律进行了较全面地研究分析 ,并得到许多重要结论 ,可为高速公路沥青混凝土路面性能评价预测、可靠性分析以及相关理论研究提供有价值的参考 The ultimate judgment of pavement design is pavement performance, while the measured values ​​of pavement performance parameters tend to have greater randomness and variability. In order to get an in-depth understanding of the characteristics of asphalt pavement performance parameters and evaluate pavement performance for expressway pavement, Of the road design methods and theoretical research to provide the basis for the previous research, the use of pavement performance parameters collected and studied in a planned manner, analysis of the probability of statistical characteristics are very important and necessary basic work. Based on the large amount of data measured by census of Shenyang-Dalian highway for many years and according to the basic theory of reliability mathematics and using the method of mathematical statistics, the analysis program was compiled to analyze the probability distribution model, the variation of each parameter of expressway asphalt concrete pavement performance, And evolution of the law conducted a more comprehensive study and analysis, and got many important conclusions, the highway asphalt concrete pavement performance evaluation prediction, reliability analysis and related theoretical research provide valuable reference