Development of a Bidirectional Pedestrian Stream Model with an Oblique Intersecting Angle
Development of a Bidirectional Pedestrian Stream Model with an Oblique Intersecting Angle
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DOI：
10.1061/(asce)te.1943-5436.0000555
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发表时间：
2013-02
期刊：
影响因子：
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通讯作者：
S. Xie;S. Wong;W. Lam;A. Chen
中科院分区：
文献类型：
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作者：
S. Xie;S. Wong;W. Lam;A. Chen
摘要本文建立了一个数学模型来描述人群中斜交叉的两条人行道的冲突效果。在以前的一篇论文中，使用了一个控制实验，其中两个行人流被要求在指定的方向上行走，以模拟一定交叉角的双向人行流。在本文中，作者重新审视了这一问题，并应用贝叶斯推理方法，用受控实验数据对改进的模型进行了校准。行人的移动数据也是通过视频观察的方法从繁忙的人行横道上收集的。这两组数据分别用于校准所提出的模型。利用校正后的模型，研究了参照流和冲突流中速度、密度和流量之间的关系，并对这些因素如何影响移动的行人流的相互作用进行了预测。计算结果表明，一股水流的流速不仅与水流的运动速度有关，而且与水流的运动速度有关。
AbstractThis paper establishes a mathematical model that can represent the conflicting effects of two pedestrian streams that have an oblique intersecting angle in a large crowd. In a previous paper, a controlled experiment in which two streams of pedestrians were asked to walk in designated directions was used to model the bidirectional pedestrian stream of certain intersecting angles. In this paper, the writers revisit that problem and apply the Bayesian inference method to calibrate an improved model with the controlled experiment data. Pedestrian movement data are also collected from a busy crosswalk by using a video observation approach. The two sets of data are used separately to calibrate the proposed model. With the calibrated model, the relationship between speed, density, and flow is studied in both the reference and conflicting streams, and a prediction is made regarding how these factors affected the interactions of moving pedestrian streams. It is found that the speed of one stream not only d...