Abstract
Many pedestrians empirically think that discarding luggage can improve evacuation efficiency, but it is unclear whether discarding luggage is an effective evacuation strategy. Previous models also oversimplified the interference of abandoned luggage on pedestrians. Hence, an extended social force model integrates pedestrian interaction with abandoned luggage like trolley cases was firstly proposed. A simulation based on a real metro station was carried out to examine the effectiveness of evacuation strategy like abandoning trolley cases at the bottleneck such as gate machine and metro carriage door, and the influence mechanism of abandoned trolley cases on pedestrians was investigated. The results show that discarding the trolley cases at the gate machine and at the metro carriage door cannot improve evacuation efficiency but increase the evacuation time by 78.7% and 14.9% at these two positions when the carrying ratio is 50%, respectively. When the occupancy rate of trolley case at the gate machine and metro carriage door is below 19% and 11%, pedestrians tend to detour the abandoned trolley cases and this behavior significantly increased the collisions between pedestrians at bottlenecks, and when the occupancy rate exceeds, they tend to push aside the trolley cases and the evacuation efficiency is further reduced.
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Acknowledgments
This research was sponsored by the Major Natural Science Research Projects in Colleges and Universities of Jiangsu Province (No.19KJA460011), the National Natural Science Foundations of China (No.71774079, No.51874182), the National Social Science Fund Key Projects on Research and Interpretation of the Spirit of the Sixth Plenary Session of the 19th Central Committee of the Communist Party of China (No.22AZD087) and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
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Xu, D., Wang, J., Liu, J. et al. A Simulation Study on the Impact of Abandoned Trolley Cases on Pedestrian Evacuation. KSCE J Civ Eng 27, 1340–1349 (2023). https://doi.org/10.1007/s12205-023-1320-5
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DOI: https://doi.org/10.1007/s12205-023-1320-5