超期服役重载交通路面结构性能分析  

Performance Analysis of Overdue Service and Heavy Traffic Pavement Structure

作　　者：郭少华 GUO Shao-hua(Liaoning Provincial Communication Planning and Design Institute Co.,Ltd.,Shenyang 110166,China)

机构地区：[1]辽宁省交通规划设计院有限责任公司

出　　处：《北方交通》2019年第8期46-50,共5页Northern Communications

摘　　要：早期建成的高速公路路面结构逐渐超过设计使用年限,分析其路面结构性能在自然老化和荷载作用下的性能衰减情况,对制定路面维修或改建方案具有重要意义。统计了超期服役的沈山高速的交通量和轴载情况,结合检测数据,总结了路面使用性能指数衰减模型,调查分析了路面典型病害及其成因,并对旧路面沥青混合料和基层混合料进行了室内试验,试验结果表明,沥青材料老化严重,但基层仍满足结构性能要求。As the pavement structure of the highway built early exceeds the design service life gradually,it is important to analyze the pavement structure performance degradation under natural aging and load,which is of great significance to the pavement maintenance or reconstruction plan.In this paper,the traffic volume and axle load of the Shenyang-Shanhaiguan Expressway,which has been in service for a long period of time,are calculated.The road surface performance index decay model is summarized in combination with the test data.The typical pavement disease and its causes are investigated and analyzed,the old pavement asphalt mixture and the base mix test was conducted,it was found that the asphalt material was severely aged,but the base layer still met the structural performance requirements.

关 键 词：超期服役 路面病害 沥青老化 性能衰减 

分 类 号：U416.01[交通运输工程—道路与铁道工程]