沈平高速公路沥青路面加铺加宽改造的优化设计

Optimum Design of Asphalt Pavement Widening and Renovation in Shenyang-Siping Expressway

通过对沈平高速公路沥青路面在设计年限内的维修改造和原路使用性能的综合分析,建立了沈平高速公路原沥青路面的加铺结构,并结合改造的纵段设计线对加铺厚度进行了优化设计。通过沈平高速公路的交通荷载和沿线地理气候环境的分析,结合路面结构长期耐久性的技术指标,建立了加宽的新建路面结构,并针对原路结构的再生利用和新旧路面联结处的耐久性,进行了多方面的优化设计,首次在改扩建工程中使用了厂拌泡沫沥青冷再生技术。

Through the comprehensive analysis of the maintenance and reconstruction of Shenyang - Siping expressway asphalt pavement during the design period and the original road use performance, the overlay structure of Shenyang- Siping expressway original asphalt pavement was established, and the overlaying thickness optimization design. Based on the traffic load and the geo - climatic environment along the high - speed and the long - term durability of the pavement structure, the new pavement structure is established. In view of the reuse of the original road structure and the durability of the old and new road junction, For the first time in the renovation and expansion project in the use of plant mix foam asphalt cold regeneration technology.