关键词: 水路运输, 船舶倾斜, 社会力模型, 船舶人员疏散, 行人流

Abstract:

In order to analyze the impact of ship listing on the evacuation process on passenger ships, this paper established an improved social force model by incorporating incline force and self-adjustment force to consider the ship listing. The model was verified by comparing the results with previous experiments. The scope of individuals' vision was considered, and the effective ranges to the surrounding persons were determined in this model. MATLAB was used to simulate the pedestrian flow in four scenarios, i.e., one-way, bidirectional, cross and multi-directional scenarios. The influence of different list angles on the individuals' average speed was analyzed, and the law of time changing with the heel or trim angles were fitted. The results show that the pedestrian speed decreased slightly when the ship listing angle less than 15°; however, it has little impact on the overall evacuation process. But when the angle more than 15°, the speed dropped rapidly, yet the evacuation time increased sharply, and the relationship between time and listing angle is fitted by a sixth-order function. Overall, the best time to evacuate is that the listing angle less than 15°.

Key words: waterway transportation, ship listing, social force model, ship evacuation, pedestrian flows