PEDESTRIAN SIMULATION CONSIDERING STOCHASTIC ROUTE CHOICE AND MULTIDIRECTIONAL FLOW
PEDESTRIAN SIMULATION CONSIDERING STOCHASTIC ROUTE CHOICE AND MULTIDIRECTIONAL FLOW
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发表时间：
2006
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通讯作者：
M. Asano;M. Kuwahara
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作者：
M. Asano;M. Kuwahara
本文提出了一种动态行人模型的框架，该模型集成了战略路径选择模型和多向流传播。特别是在过去的十年里，尽管有大量的行人模型被提出，但很少有模型将行人的路径选择行为和物理运动放在一个单一的综合框架中考虑。在开放空间中，即使在空间离散化之后，也可能为行人定义大量可能的路径。然而，从心理上讲，我们显然并不认为所有这些道路都是不同的选择。因此，在这个模型中，假设行人首先选择一系列连续的分区进行遍历。然后，该模型基于动态用户最优(DUO)的假设，在每条详细路径上分配实际流量。结合这两个流量分配阶段，该模型假设了行人路径选择的分层决策。本文采用改进的元胞传输模型(CTM)来描述人流拥堵和动态传播的物理现象。与原来的CTM的一个关键区别是，行人流动本质上是多方向的。因此，本文提出了一种将原有CTM的分析方法扩展到考虑多向运动的方法。通过一个测试用例的测试，说明了所提出的改进的CTM的合理性。
This paper proposes a framework of a dynamic pedestrian model integrated with a strategic route choice model and multi-directional flow propagation. Despite a vast number of proposed pedestrian models especially in the last decade, very few of these considered both pedestrian’s route choice behavior and physical movement in a single integrated framework. In an open space, even after the discretization of the space, a massive number of possible paths for pedestrians can possibly be defined. However, psychologically we obviously do not consider all these paths as distinct options. Thus, pedestrians in this model are assumed to choose a series of consecutive sub-areas to traverse along at first instance. Then, the model allocates the actual flows on each detailed path based up on an assumption of dynamic user optimum (DUO). Combining these two stages of flow allocation, the model thus assumes a hierarchical decision of pedestrian’s route choice. In this paper, a modified celltransmission model (CTM) is adopted to represent the physical phenomena of congestion and dynamical propagation of pedestrian flows. A key difference to the original CTM is that the pedestrian flow is multi-directional by its nature. Thus, the paper proposes an approach to extend the analysis in the original CTM to consider the multi-directional movement. The paper also illustrates the plausibility of the proposed modified CTM by testing with a test case.