| 基于时间阻抗函数的路网可达性研究 |
| |
| 引用本文： | 张生瑞,王超深,徐景翠.基于时间阻抗函数的路网可达性研究[J].地理科学进展,2008,27(4):117-121. |
| |
| 作者姓名： | 张生瑞 王超深 徐景翠 |
| |
| 作者单位： | 长安大学公路学院,西安,710064 |
| |
| 摘 要： | 阐述了可达性的概念和在不同学科的应用范围，分析了可达性的影响因素，总结了现阶段在几何拓扑学上 常用的可达性量化方法，指出重力模型法、距离法、累计机会法的使用条件和不足。在这一基础上，发现现存的问题 主要是局限于空间尺度的量化不能准确地反应空间网络的联系程度，针对此问题，提出了基于时间阻抗函数的量 化模型，以实际交通量作为主变量，能间接地反应空间需求强度。随后引入了节点重要度的概念，能更加直接地反 映路网节点上社会、经济、交通等因素对可达性的影响，能很好地弥补时空法和效用法的不足。
|
| 关 键 词： | 可达性 度量方法 几何拓扑学 时间阻抗函数 节点重要度 |
| 收稿时间： | 2008-06-01 |
| 修稿时间： | 2008-07-01 |
Research on Road Network Accessibility Based on Time Impedance Function |
| |
| ZHANG Shengrui,WANG Chaoshen,XU Jingcui.Research on Road Network Accessibility Based on Time Impedance Function[J].Progress in Geography,2008,27(4):117-121. |
| |
| Authors: | ZHANG Shengrui WANG Chaoshen XU Jingcui |
| |
| Institution: | School of Highway, Chang'an University, Xi'an, 710064 China |
| |
| Abstract: | The paper elaborates the accessibility concept and application scope in the different disciplines simply,analyzes the factors influencing accessibility,summarizes quantification method used commonly at the present stage in geometry topology,points out application conditions and insufficiency of the gravity model,the distance model,the accumulation opportunity method.In this foundation,discovers that quantification limiting to the spatial criterion can not respond the relation of the spatial network accurately,in view of this question,proposes the quantification model basing on the time impedance function,which takes the main variable by the practice capacity.This model can respond the spatial demand intensity indirectly.Then the paper introduces the node importance concept,it can reflect factors influencing accessibility in the road network even more directly,such as society,economy,transportation.This model can make up for the insufficiency of space and time method. |
| |
| Keywords: | accessibility measure method geometry topology time impedance function node importance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地理科学进展》浏览原始摘要信息 |
| 点击此处可从《地理科学进展》下载免费的PDF全文 |
|
