Abstract
Due to the increase of the number and frequency of major events in the past decades, studies on pedestrian dynamics have attracted attentions of researchers of various disciplines. Considering that escape environment, especially the ones under special circumstances including fire, can be greatly affected by factors such as smoke, pedestrian gait is as a result different from normal walking. Thus an experimental study on fundamental diagram of single-file pedestrian movement at different available heights is detailed in the present paper. In total five experimental scenarios with the available heights of 1.0 , 1.2, 1.4, 1.6 and 2.0 m were investigated. The relationship between velocity and density, density and flow, and spatial headway and instantaneous velocity were analyzed. It is found that the pedestrian’s free walking speed is the largest at the height of 2 m. At high density scenarios, the speed of pedestrians presents two separated states, i.e., 0.5 m/s at the heights of 2.0 and 1.6 m and 0.25 m/s at the heights of 1.0, 1.2 and 1.4m. It is also found that there are three segments, namely laminar flow state, stop and go phenomenon and jammed state, in the fundamental diagram. The results presented in this paper is helpful in understanding pedestrian evacuation at different heights.
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Acknowledgements
The work presented in this paper is fully supported by the National Natural Science Foundation of China (Nos. 71871189 and 71473207) and National Key Research and Development Program of China (No. 2017YFC0804900).
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Ma, J., Shi, D., Li, T. (2020). Pedestrian Fundamental Diagram in Between Normal Walk and Crawling. In: Zuriguel, I., Garcimartin, A., Cruz, R. (eds) Traffic and Granular Flow 2019. Springer Proceedings in Physics, vol 252. Springer, Cham. https://doi.org/10.1007/978-3-030-55973-1_23
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DOI: https://doi.org/10.1007/978-3-030-55973-1_23
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