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随着中国社会经济的快速发展,既有公路尤其是高等级公路的服务水平正在逐年降低,道路的扩建扩容势在必行。目前中国高速公路改扩建项目日益增多,工程人员在设计过程中对于既有道路拟合有着不同的理解。该文以京港澳高速公路石家庄至安阳段改扩建项目为例,讨论了路线在平面拟合中遇到的若干问题,提出以行车轨迹为依据的拟合分析方式以及反向曲线间短直线的处理。
With the rapid development of China’s social economy, the service level of existing roads, especially high-grade highways, is decreasing year by year. It is imperative to expand and expand the roads. At present, there are more and more projects for the reconstruction and expansion of expressways in China. Engineers have different understandings of the existing road fits in the design process. Taking the reconstruction and expansion project of Shijiazhuang-Anyang section of Beijing-Hong Kong-Macao Expressway as an example, this paper discusses some problems that the route encountered in plane fitting, and proposes a fitting analysis method based on the driving trajectory and the short straight line between the reverse curves deal with.