Zhipan Niu

Abstract Movement of pedestrian crowds is ubiquitous in human society. However, it is unclear what dynamical regimes pedestrian crowds can exhibit at different crowd densities, how pedestrians move in these different dynamical regimes, and in which dynamical regime the movement synchronization of pedestrians is most likely to occur. Here, we conducted a unidirectional crowd movement experiment, in which we tracked the movement of pedestrian crowds through foot tracking.

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6. Conclusions In this study, we examined the effects of impact pressure and flow conditions on sediment accumulation under a bridge during flash floods. By testing varying sediment deposition heights and inflow conditions, we sought to unravel the intricate interplay between these factors and their consequences on horizontal pressure and flow fluctuations on the bridge deck.