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从高速公路网的技术、经济社会效益和环境影响3个方面对高速公路网规划中期评价的理论与方法进行了探讨。技术评价主要从网络结构性能和交通质量2个方面进行评价,网络结构性能评价选取的指标主要有高速公路网密度和连通度;交通质量评价选取的指标主要有负荷度和里程拥挤率。效益评价主要从财务效益和社会经济效益2个方面进行评价,评价方法主要有投入产出法、系统动力学模型、投资乘数法和生产函数法。环境评价主要从资源占用成本、环境治理成本、环境管理成本和节能减排效益4个方面进行分析。该研究内容既丰富了相关领域的研究空白,同时评价结果也为高速公路网规划的调整奠定了坚实的基础,具有重要理论和现实意义。
The theory and method of medium-term evaluation of expressway network planning are discussed from the aspects of technology, economic and social benefits and environmental impact of expressway network. The technical evaluation is mainly evaluated from two aspects of the network structure performance and traffic quality. The indexes selected by the network structure performance evaluation mainly include the highway network density and connectivity; the indexes selected by the traffic quality evaluation mainly include the load degree and mileage crowding rate. Benefit evaluation mainly from two aspects of financial efficiency and social economic benefits evaluation, evaluation methods are mainly input-output method, system dynamics model, investment multiplier method and production function method. The environmental assessment mainly analyzes from four aspects: resource occupancy cost, environmental management cost, environmental management cost and energy conservation and emission reduction benefits. The content of this research not only enriches the research gaps in related fields, but also provides a solid foundation for the adjustment of expressway network planning, which has important theoretical and practical significance.