城镇化地区公路提级改造方案要点分析

Analysis on Key Points of Highway Upgrading and Reconstruction Schemes in Urbanized Areas

摘要:

伴随着怀柔科学城东区的发展建设以及周边规划路网的实施进程，密新路一方面承担着怀密两区的过境交通，一方面解决科学城东西区通勤和沿线村民出行的集散交通，从传统的二级公路转变为典型的城镇化地区公路。城镇化地区公路提级改造方案设计要点主要有提级改造必要性论证，道路等级和车道数的确定，设计速度的选择，横断面布设，路基加宽方案，路面结构方案及材料比选等。结合密新路实体工程，从技术可行，节能环保，经济合理，利于施工等方面进行深入分析，全面系统地阐述了各关键性设计要点的确定过程，以期为相关工程提供借鉴和参考。

Abstract:

With the development and construction of the east area of Huairou Science City and the implementation of surrounding planned road networks, on the one hand, Mixin Road undertakes the transit traffic between Huairou and Miyun Districts, on the other hand, it solves the transportation distribution for commuting between the east and west areas of the Science City and the travel of villagers along the line, which has transformed from a traditional second-class highway into a typical urbanized area highway. The key points of highway upgrading and reconstruction schemes in urbanized areas mainly include the argumentation of the necessity of upgrading and reconstruction, the determination of road grade and lane number, the selection of design speed, the cross-sectional layout, the roadbed widening scheme, the pavement structure scheme and the material comparison. Combined with the Mixin Road Project, the in-depth analysis is conducted from the aspects of technical feasibility, energy conservation and environmental protection, economic rationality, and construction convenience. The determination process of each key design point is comprehensively and systematically expounded in order to provide reference and guidance for related projects.