综合运输通道多种运输方式耦合度模型研究

摘要

综合运输通道是连接不同区域的由多种运输方式组成的线路集合，其中的各种运输方式间存在着复杂的非线性作用关系。尝试提出一种适用于通道内多种运输方式间耦合度计算的通用模型。该模型从耦合机理出发，采用指数功效法对各耦合度影响因素原始数据进行标准化处理，采用客观的熵值法来确定子系统内各指标的权重，进而推导出统一的多子系统耦合度计算模型，并分析了该模型的数学性质。以甘肃省三种运输方式为例，计算并分析了两两之间和三者之间的耦合度，指出甘肃省运输方式间耦合度的实际特征。可以较好地适用于综合运输通道内多种运输方式间耦合度的计算，并同时指出提升耦合度的有效途径。%A comprehensive transportation corridor is composed of multi-transportation mode lines connecting different areas.There is a complex nonlinear relationship among these various transportation modes.A general model,which can apply to compute the coupling degree of multi-transportation modes in one transportation corridor is proposed.Based on the coupling mecha-nism,the model adopts exponential effective function to standardize raw data of each coupling de-gree influence factor,and adopts objective entropy method to compute each index weight of sub-systems.Furthermore,a united multi-subsystem coupling degree model is deduced in detail,and mathematical properties are discussed.Coupling degrees between any two modes or among three modes are computed and analyzed by taking three transportation modes of Gansu province as an example.And the actual coupling degree characteristics of multi-transportation modes in Gansu province are pointed out.The results show that the model can compute coupling degrees of multi-transportation modes in one comprehensive transportation corridor more effectively.In addi-tion,perational approaches to promote coupling degree are proposed.