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arXiv 2212.01296physics.soc-ph
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瓶颈前分流装置对行人流量的影响

Influence of Pre-bottleneck Diversion Devices on Pedestrian Flow

Lu Wang, Saizhe Ding, Hang Yu, Xudong Li, Jun Zhang, Weiguo Song

摘要:

瓶颈的存在往往会导致行人聚集的停滞,严重影响交通的效率,减少行人的流量。一些研究表明,在瓶颈前设置装置可以在一定条件下促进行人疏散。本文研究了出口前设置分流装置对行人流量的影响。根据我们的观察,这些分流设施可以在出口前形成缓冲区,影响行人的行为。疏散时间被发现减少的设备变得远离出口。在我们的实验中,发现分流桩的疏散效果优于安全屏障和无设备条件的情况下。在出口前约1m和3m处设置安全屏障的情况下,疏散时间分别延长了0.88%和2.67%。对于不同的出口距离(1m和3m),分流桩的疏散时间分别比没有设备的疏散时间短11.53%和14.96%。此外,设置分流桩减少了两个连续行人之间的时间间隔。综上所述,在我们的实验设置中,分流装置能够有效提高出口前的平均速率,促进疏散变得更加有序,从而减少了疏散后期的拥堵。也就是说,本研究表明,合理的设施布局不仅可以满足日常功能需求,而且可以提高空间在紧急情况下的有效利用,减少人群聚集和堵塞的概率。

英文摘要:

The existence of bottlenecks often leads to the stagnation of pedestrian gatherings, which seriously affects the efficiency of traffic and reduces the flow of pedestrians. Some studies have shown that setting devices in front of bottlenecks can promote pedestrian evacuation under certain conditions. In this paper, the effect of setting diversion devices in front of the exit on pedestrian flow is studied. From our observation, these diversion devices can form a buffer zone before the exit and affect pedestrian behaviors. The evacuation times are found to decrease as the devices became farther away from the exit. In our experiments, it is found that the effect of shunt piles on evacuation is better than in the case of safety barriers and without device conditions. Under the condition of setting up safety barriers approximately 1m and 3m in front of the exit, the evacuation times are extended by 0.88% and 2.67%. For shunt piles, the evacuation times are 11.53% and 14.96% shorter than that of those without a device regarding the different distances to exit (1m and 3m, respectively). In addition, setting up shunt piles reduces the time interval between two consecutive pedestrians. To sum up, in our experimental settings, the diversion devices can effectively improve the average speed ahead of the exit and promote evacuation to become more orderly, which reduces the congestion in the later period of evacuation. In other words, this study demonstrates that a reasonable layout of facilities can not only meet the daily functional requirements but also improve the efficient use of space in emergencies, reducing the probability of crowd conventions and jams.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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