交通分布-交通分配组合模型研究

Research on the Model for Combined Distribution-Assignment of Traffic

在交通规划实践中,交通分布和交通分配问题作为“四阶段预测模型”各自独立,尽管两个问题紧密相关.因此,有必要建立交通分布-交通分配组合模型,来反映这种反馈.文中介绍了Evans模型,并说明了逐次平均法求解模型的步骤,最后用算例说明了具体算法.这种方法完全可以用M icrosoft Exce l计算,计算方法简单,可以为组合模型的求解提供新的思路.

It seems to be customary in practice to treat traffic assignment as independent problems in the four-staged transportation planning process, although they are in fact interrelated. In this paper, Evans＇ combined traffic distribution assignment model is introduced, and MSA algorithm is proposed to solve this problem. The MSA algorithm is illustrated by an example. This method can be solved by Microsoft Excel, it may be helpful for solving combined distribution-assignment of traffic problem.