高寒低等级公路沥青面层结构影响分析

Asphalt Surface Structure Analysis of the Low-grade Highway in Plateau-cold Region

针对高寒地区低等级公路沥青路面结构,对已运营多年的高寒区域公路项目性能状况进行评价分析,通过建立数值计算模型,考虑温度场对路面结构的影响,分析了路面面层厚度变化与面-基层之间接触联结状态对路面结构产生的影响,并针对工程实践的改进提出了建议.研究分析结果表明,薄面层的沥青路面结构能较好地满足高寒地区低等级公路整体结构要求,但还需要采取措施进一步提高路面的使用性能.

The paper focus on low-grade highway asphalt pavement structure in plateau-cold region. First the paper makes evaluation analysis of the highway pavement performance which has been put in- to use for many years in plateau-cold region, Then establishes a numerical model considering the effect on pavement structure temperature, the pavement structure influence of asphalt pavement surface layer thickness changing and the contact link station between base and surface courses is analyzed. At last some improvement suggestions and opinions in engineering practice are put forward. The research results show that： thin surface layer of asphalt pavement structure can meet the requirements of the low-grade highway overall structure function in plateau-cold region, but also need to take measures to improve the pavement performance.