基于层次分析法的就地热再生沥青路面路用性能后评估

摘要

目的 分析就地热再生沥青路面性能后评估指标,建立相对独立的就地热再生路面路用性能后评估体系.方法 基于辽宁省黑大线维修改造工程沈棋路至棋盘山风景区路段,以《公路技术状况评定标准》(JTGH20-2015)为依据,结合就地热再生的特点,利用层次分析法计算就地热再生沥青路面路用性能的各项指标的权重值,将其作为指标权重值的修正值,进而计算就地热再生项目的路面质量指数(PQI),对就地热再生路面的路用性能进行更加客观、准确的评估.结果 得出路面破损状况指数(PCI)、路面行驶质量指数(RQI)、车辙深度指数(RDI)和路面抗滑性能指数(SRI)的权重分别为0.478 7、0.243 2、0.204 5和0.073 5,路面质量指数(PQI)为90.623 1,评价等级为优.结论 利用修正后的指标权重计算得出的结果更加精确、可靠,更适用于辽宁省公路的具体情况.对路用性能后评估的进一步发展打下良好基础.%In this paper the post evaluation index of asphalt pavement performance by hot in-place recycling technology are analyzed and relatively independent post-evaluation system of recycling pavement performance is established.Based on the evaluation standard of highway technical condition(JTGH20-2015) and the characteristics of geothermal regeneration,the weight value of each performance index of the reclaimed pavement is calculated by the analytic hierarchy process.The weight value of the former index is corrected to calculate the pavement quality index(PQI) of the thermal regeneration project,which can make a more objective and accurate evaluation for the performance of the reclaimed pavement.The calculated pavement condition index (PCI),riding quality index(RQI),rutting depth index(RDI)and pavement skid resistance index(SRI)weight values were 0.478 7,0.243 2,0.204 5 and 0.073 5,pavement quality index(PQI) was 90.623 1,the evaluation grade is excellent.The results obtained from the revised index weights are more accurate and reliable,and can also be applied to the specific situation of Liaoning province.The post evaluation of pavement performance of asphalt pavement can lay a good foundation for the further development.