宏觀与微观交通仿真结合的城市路网优化研究.doc

宏观与微观交通仿真结合的城市路网优化研究 袁满荣1，成 卫2，金成英3 （1,昆明市公安局交警支队，云南，昆明 650000；2，3昆明理工大学，云南，昆明650000) 摘要:城市道路网系统是城市交通系统的重要组成部分之一，交通系统的好坏会对其它城市系统的发展造成直接影响。为防止大理市海东新城区建成后未来年出现众多城市中心区所存在的道路交通拥堵，有必要在建设海东新区道路网之前对原始规划路网进行科学的定性与定量的分析评价及优化。针对未建成的海东新区城市，本论文提出一种新的方法——结合基于土地利用的宏观交通需求预测和基于TransModeler的微观交通仿真，对原始规划道路网布局、路网密度、路网结构、路网等级级配、路网交通拥堵点段、交通拥堵区域等对一系列相关问题进行进一步分析研究，找出问题所在，对路网进行分析评价与优化设计，最终确定适合山地城市大理市海东新区的路网体系。 关键字：山地城市；原始规划路网；宏观预测；微观仿真；路网优化；路网评价 中图分类号：U491.2 文献标识码：A Study on Road Network Optimization for New City based on Macroeconomic Forecasts and Microscopic Simulation Cheng Wei1, Yuan Manrong2,Jin Chengying3 (1，3 Kunming university of Science and Technology Kunming China 650000 2Kunming Public Security Bureau, Traffic Police Detachment Kunming, China 650000) Abstract：City road network system is one of the most important parts of traffic system. Transportation system will directly influence the development of city system. To prevent Dali haidong new urban districts take plans traffic congestion which numerous city center district have in common in the future, it is Necessary to evaluate and quantitative analysis and optimization for Haidong new district road network before constructing. Combined macroscopic traffic demand forecasting which based on Land use and microscopic traffic simulation which based on TransModeler, detailed study on the layout of the road network, the road network density, structure, level grading, and road network point, segment and areas which easily lead to traffic congestion of the original planning road network. Then find out the problems, take analysis and evaluation to the road network. Finally, determine the road network system which is adapted to haidong new urban districts. Key words：Mountainous City; original planning road network；Macro forecast; Micro-forecast; Road network optimization; Road Network Evaluation 0 引言 对于一个城市综合规划来说，城市道路网规划起着举足轻重的作用。城市路网规划成定局后尤其是路网建成后难于改变，这就会导致路网结构规划不当或者路网规划与土地利用不能相互协调，未来年随着城市经济的进一步发展私家车交通量越来越大，随之带来的是城市交