基于四因素的公路网三点结构优化方法

发布时间：2018-01-06 06:18

本文关键词：基于四因素的公路网三点结构优化方法　出处：《中国公路学报》2014年08期 　论文类型：期刊论文

【摘要】：为提高公路网对经济社会发展的适应性,针对公路网布局优化问题,从公路网系统功能和经济社会发展角度出发,以建设成本、土地占用机会成本、运输成本、公路使用效率四因素为决策变量,构建公路网综合评价模型。在此基础上,以公路网三点典型结构为支点,提出添加虚拟节点的优化方法,并引入粒子群算法对优化模型进行求解。最后,以关中、陕南地区公路网优化为例,将四因素优化方法的优化效果同传统优化方法作对比分析。研究结果表明:四因素公路网综合评价模型具有良好的评价功能,且评价方法灵活、贴近实际;在三点典型结构中添加虚拟节点的优化方法可行且有效;同传统优化方法相比,所提出的方法能兼顾解决交通拥堵问题和非合理性畅通问题,优化效果显著。
[Abstract]:In order to improve the adaptability of highway network to economic and social development, aiming at the optimization of highway network layout, from the point of view of highway network system function and economic and social development, in order to build cost, land occupation opportunity cost, transportation cost. On the basis of the four factors of highway use efficiency as decision variables, a comprehensive evaluation model of highway network is constructed. Based on this, an optimization method of adding virtual nodes is put forward with three typical structures of highway network as fulcrum. The particle swarm optimization algorithm is introduced to solve the optimization model. Finally, the optimization of the highway network in Guanzhong and southern Shaanxi is taken as an example. The optimization effect of four-factor optimization method is compared with that of traditional optimization method. The results show that the comprehensive evaluation model of four-factor highway network has a good evaluation function, and the evaluation method is flexible and close to the reality; The optimization method of adding virtual nodes to three typical structures is feasible and effective. Compared with the traditional optimization method, the proposed method can solve both the traffic congestion problem and the non-rational smooth flow problem, and the optimization effect is remarkable.
【作者单位】：长安大学经济与管理学院;
【基金】：教育部人文社会科学基金项目(11YJA630155) 教育部高等学校博士学科点专项科研基金项目(20130205110001) 中央高校基本科研业务费专项资金项目(2013G6231001)
【分类号】：U412.1
【正文快照】： 0引言拥堵和非合理性畅通是当前公路交通网络普遍存在的问题。一些路段交通量过于饱和,通而不畅,甚至拥堵,还有一些路段则“少车问津”,车流量极少,造成资源的严重闲置和浪费,严重影响公路网基础作用的充分发挥[1-4]。现阶段,中国交通运输系统的发展目标是构建现代化综合运输

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