基于OD 聚类分析的区域运输通道特征线确定方法

为更准确、有效地配置通道交通资源，针对运输通道定位问题，提出运输通道 特征线的概念，以运输需求为主导，以OD 时空分布为数据基础，构建OD 投影模型以模 拟交通线吸引原理对需求OD 进行聚类分析的运输通道特征线确定方法，以广湛运输通 道为实例，运用MATLAB 编程进行方法验证.研究表明，运输通道特征线可同时表征运输 通道的空间走向及运输流量，涵盖信息更为全面，对运输通道规划布局、交通资源配置更 具参考价值；运输通道特征线确定方法以需求OD 为依据，体现了市场经济以需求为导 向的基本特征，更能体现交通运输网满足运输需求的本质功能；实例分析最终确定的特 征线为“广州-湛江”，与实际相符.

Eigen Line Identification for Regional Transportation Corridor Based-on OD Cluster Analysis

To optimize the allocation of transportation resources, this paper focuses on the problem of transportation corridor location and puts forward the concept of transportation corridor eigen line. Taking OD demands as the basic data, it develops a method of eigen line identification by developing an OD projection model to simulate the attraction of traffic lines. The Guangzhou-Zhanjiang transportation corridor of China is taken as an example to demonstrate the effectiveness of the theory. The studies indicates that: (1) the connotation of transportation corridor eigen line is widespread, including space trend and demand attraction, both of them are much significant for the planning and resources allocation of transportation corridor. (2) the method of eigen line identification take OD demands as the basic data, which conforms to demand oriented market economy, and embodies the natural functions of road network, satisfying the transportation demands. (3) the case research identifies the eigen line of Guangzhou- Zhanjiang transportation correctly, which support the theory of eigen line identification.