基于改进社会力模型的行人过街运动行为研究

摘要

In order to more effectively simulate the behavior of pedestrian crossing road at a signalized intersection,the model of the relative velocities and the desired speeds of pedestrians and the forces among the pedestrians and the obstacles have been amended based on the classical social force model,which gave an answer to the relative positioning of pedestrians and the fixed value of the desired speed.This paper analyzed the factors of the pedestrian crossing road behavior according to the classification of road traffic factors:pedestrians,vehicles,road facilities,then an interference model was established for all the influencing factors based on the classical social force model,which reflected the influence of the different factors on the pedestrian behavior by increasing the angle and other parameters.Finally,a model of pedestrian crossing road behavior at a signalized intersection considering the comprehensive influence factors has been built according to the parallelogram law.%为更加真实有效地模拟信号控制交叉口处行人的过街行为,在经典社会力模型基础上分别对过街行人的相对速度、期望速度和行人与障碍物之间的作用力的模型进行了改进,解决了行人站位位置影响、期望速度恒定不变等问题.针对行人过街运动行为,按道路交通人、车、道路三要素分类分析影响行人过街行为的因素,利用改进后的社会力模型对所有影响因素分别建立干扰模型,并增加角度等参数反映不同因素位置的变化对行人行为的影响.最后,根据平行四边形法则,构建综合因素影响下信号控制交叉口处行人过街运动行为模型.