基于全寿命分析的高速公路抗车辙养护方案比选
Comparison and Selection of Anti-Rutting Maintenance Schemes of Expressway Based on Life Cycle Analysis

为确定最佳的高速公路抗车辙养护方案，本文在研究中将路面划分为超车道和行车道，综合比较路面车辙和PCI值两个指标，最终确定了高速公路各养护方案的养护时机。同时本文采用全寿命周期分析方法，对比了四种养护方案的费用效率比，结果表明中面层采用复合改性沥青混合料作为抗车辙养护材料时，其路用性能最佳且在全寿命周期内费用也最低，性价比优异，可为路面抗车辙养护决策提供参考。
In order to determine the best anti-rutting maintenance scheme of the expressway, this paper divides the road surface into passing lanes and driving lanes in the study, comprehensively com-pares the two indicators of road ruts and PCI values, and finally determines the maintenance timing of each maintenance scheme of the expressway. At the same time, the whole life cycle analysis method is used in this paper, the cost-efficiency ratio of the four maintenance schemes is compared, and the results show that when the middle surface layer adopts the composite modified asphalt mixture as the anti-rutting maintenance material, its road performance is the best and the cost is also the lowest in the whole life cycle, and the cost performance is excellent, which can provide a reference for the road surface anti-rutting maintenance decision.