沪宁高速公路扩建路面方案优化选择

文章以沪宁高速公路南京段为例,对沪宁高速公路扩建工程路面方案的选择进行了详细的阐述。在对原路面进行分析、研究的基础上,指出了路面损害的特点及其产生的原因,提出了治理措施。并建议路面扩建工程需要尽可能利用老路面,采用“分车道进行路面设计”,“进行独立的纵断面设计”,“满足弯沉要求”等原则,达到既满足工程要求又降低工程造价的目的,确定了沪宁高速公路扩建工程路面结构的优化方案,对以后相似地质条件地区的道路建设,尤其是高速公路扩建路面的设计具有很好的参考和借鉴意义。

Optimal Choice on the Project of the Extension Road Surface in Huning Expressway

The Nanjing section in Huning expressway was taken as the example for expatiating the project choice of road surface in extension project of Huning expressway in the paper.On the basis of analysis and study of the former road surface,it points out the characteristics and reasons of the road damages,and the treating measures were presented.Moreover,the extension project of surface is suggested to make full use of the former road surface.These principles have been adopted,such as "designing the road surface according to different lanes"- "designing the surface profile independently"-"meeting the requirement of road deflection",which have attain the goal of contenting the requirement and reducing the cost of engineering.So,the structure optimal project of road surface in the extension project of Huning expressway was confirmed,which will offer a feasible reference for road construction in similar geological condition area,especially,for the road surface design in future highway extension project.