【摘要】 针对当前中国公路网等级结构普遍存在的等级结构不合理、高等级公路比重较低及整体路网功能不完善等问题,探析了宏观公路网等级结构优化的基本内涵,从提升路网效率和效益、提升路网覆盖范围、提升路网功能和服务水平、均衡和协调路网分布、优化路网规模五个方面提出了等级结构优化的基本要求,构建了相应的多目标规划模型,并以陕西省公路网等级结构的优化为例进行了验证。更多还原

【Abstract】 China highways have structural problems with low percentage of quality network and inefficient functions. This article explores the optimization method of China highway structure to improve its efficiency and effectiveness as well as functionality. We propose a multi-objective model and test the model with a case in Shaanxi Province.更多还原