摘要
从枢纽内行人运动行为和路径选择行为出发,以社会力模型为基础,综合考虑人与人、人与车站的相互作用,构建基于个体活动的行人交通微观仿真模型。该模型依据目标驱动力及人与人或障碍物之间的心理排斥力、挤压力、摩擦力求解行人的运动方向和速度,考虑到行人对其他行人和障碍物的避让行为,提出了一种改进算法,该算法引入行人防止穿透决策规则,消除碰撞、重叠现象,并采取目标点局部极小化原则,设置辅助目标点,有效的解决行人与环境之间动态避碰近程度、拥挤程度和环境舒适度,建立节点选择模型;最后,将改进后的模型应用于人群行为特性研究,开发铁路客运站行人集散仿真系统,以北京南站为例进行仿真分析,对模型进行校核检验。
Thinking about it from motion and path selection behavior of pedestrians in stations, a social force-based simulation model for pedestrian was established which considered the interaction between pedestrians and stations. The direction and speed were computed by using target driving force and acting force, extrusion and frictions, an improved algorithm was put forward taking into account the avoidance behavior between other pedestrians and obstacles. To eliminate the overlapping phenomenon, the rule preventing the pedestrians＇penetration was introduced. The principle of the target local minimum and auxiliary target were adopted, which resolved the problems of dynamic collision avoidance and bypass between pedestrians and the environment. Meanwhile, by research and analysis on path choice, the global path network topology was constructed and the node selection model was established according to the close, congestion and environmental comfort degree. Lastly, the improved model was applied for research on pedestrian crowding characters and development pedestrian distributed simulation system. For the purpose of verification and validation of the model, a computer simulation in BRS was made.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2014年第3期662-669,共8页
Journal of System Simulation
基金
国家863项目(2009 AA11Z207)
关键词
计算机仿真
行人交通行为
社会力
动态避碰
路径选择
computer simulation
pedestrian traffic behavior
social force
dynamic collision avoidance
path choice
