运用连续平衡分配模型分析竞争性公共交通枢纽设施的市场份额

Research on market shares of competitive public transportation pivot facilities with continuous equilibrium assignment model

在分析城市交通体系特征的基础上,运用连续函数的处理方法,建立了连续型的城市交通体系模型;同时讨论了相关因素对出行者选择行为的影响,提出了确定型的出行选择模型。结合交通分配理论,建立了多类型出行者的确定型连续平衡分配模型来分析竞争性公共交通枢纽设施的市场份额问题。模型被证明满足用户平衡条件和相关约束条件,并可利用以有限元算法为基础的迭代解法求得模型的数值解,从而计算出竞争性公共交通枢纽设施的市场份额。模拟城市算例的结果说明了提出的模型和算法的有效性和可靠性。

Based on characteristic of urban transportation,authors consider the urban transportation network as one commodity. According to analyzing impact factors of traveler choice behavior, a deterministic model is used.Combined with traffic assignment theory,a multi-class continuous equilibrium model is given to analyze market shares of competitive public transportation pivot facilities.The model is proved to satisfied user equilibrium condition and other constraint conditions.An efficient iterative method using finite element technique is proposed to solve the optimal model problem,and the market share can be got with the solution of the model. Finally,a numerical example is illustrated to show the effectiveness and reliability of the proposed method.