基于物元理论的城市规模与路网系统协调评价  

Evaluation of Coordination Between City Size and Road Network System Based on Entropy-Matter Element Analysis

作　　者：于海松[1] 周家中[1] 陈夕云 

机构地区：[1]西南交通大学交通运输与物流学院,四川成都610031

出　　处：《数学的实践与认识》2015年第2期7-13,共7页Mathematics in Practice and Theory

基　　金：国家自然科学基金(51108390)

摘　　要：城市规模与道路网络是一对互为动力的城市发展因子,两者的协调配合促进城市交通体系的健康发展.利用可拓学理论将两者协调发展的评价指标体系、评价等级范围以及指标特征值结合成物元,建立城市规模与路网系统协调程度的物元评价模型,并考虑主客观条件,采用熵值权重与主观权重的融合权重来确定评价等级,增加评价结果的可靠性.最后通过成都市中心城的统计数据,对城市规模和路网系统协调程度进行评价,验证方法的实用性和可操作性,结果表明目前成都市中心城的路网水平在一定程度上能够较好适应城市规模的需求,评价等级为优,但仍有较大提升空间,管理部门在城市发展的过程中应继续关注路网系统的完善.The city scale and road network is a pair of mutually-powered urban develop- ment factors, their coordination and development promoting the healthly development of the urban traffic system. Based on extension theory, combined the evaluation index system, eval- uation level range and index characteristic value into a matter-element, build matter-element evaluation model of the city scale and network system coordination degree. Considering the subjective and objective conditions, adopted the combined weight that is the average value of entropy weight and subjective weight to determine evaluation level, increased the reliability of the evaluation results. Finally, using the statistical data of the center city of Chengdu to evaluate the coordination degree of city scale and network system, verified the practicality and maneuverability of the method. The results show network level of chengdu center city adapt to the needs of urban scale in a certain extent, and the evaluation rank is the best. But there is large upside potential, management department should continue to focus On the improvement of the network system in the process of urban development.

关 键 词：物元分析 城市规模 路网系统 协调性 熵值 

分 类 号：U412.12[交通运输工程—道路与铁道工程] TU984[建筑科学—城市规划与设计]