吉林大学学报(工学版) ›› 2019, Vol. 49 ›› Issue (3): 688-694.doi: 10.13229/j.cnki.jdxbgxb20170612

• • 上一篇    下一篇

考虑双向行人跟随行为的社会力模型

曹宁博1,2,赵利英3(),曲昭伟1,陈永恒1,白乔文1,邓晓磊1   

  1. 1. 吉林大学 交通学院，长春 130022
    2. 长安大学 经济与管理学院，西安 710064
    3. 西安理工大学 经济与管理学院，西安 710054
  • 收稿日期:2017-06-12 出版日期:2019-05-01 发布日期:2019-07-12
  • 通讯作者: 赵利英 E-mail:lyzhao@xaut.edu.cn
  • 作者简介:曹宁博(1987?)，男，博士研究生.研究方向：交通流理论,交通组织和交通仿真.
  • 基金资助:
    国家自然科学基金项目(51278220,51278520)

Social force model considering bi⁃direction pedestrian slipstreaming behavior

Ning⁃bo CAO1,2,Li⁃ying ZHAO3(),Zhao⁃wei QU1,Yong⁃heng CHEN1,Qiao⁃wen BAI1,Xiao⁃lei DENG1   

  1. 1. College of Transportation, Jilin University, Changchun 130022, China
    2. School of Economics and Management, Chang'an University, Xi'an 710064, China
    3. School of Economics and Management, Xi'an University of Technology, Xi'an 710054, China
  • Received:2017-06-12 Online:2019-05-01 Published:2019-07-12
  • Contact: Li?ying ZHAO E-mail:lyzhao@xaut.edu.cn

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摘要：

为在行人仿真模型中更全面地反映行人特性，并研究跟随行为对双向过街行人的影响，本文建立了考虑跟随行为和冲突避让的行人过街社会力模型。研究了跟随特性对行人行走行为的作用，建立了行人的跟随行为模型、人行横道和信号灯对行人的作用力和冲突避让力模型，提出了改进的行人过街社会力模型。通过数值仿真分析了行人过街速度和可能事故数的变化规律，结果表明：设置跟随力有利于提高整体行人的过街速度和过街效率；冲突避让模型能有效降低行人的可能事故数。

关键词: 交通运输系统工程, 社会力模型, 跟随行为, 冲突避让, 人行横道

Abstract:

To make pedestrians flow simulation model more comprehensive, and explore the effects of slipstreaming behavior on pedestrians crossing, a modified social force model is proposed to investigate pedestrians crossing process considering the slipstreaming behavior and conflict avoidance at signalized intersections. In the modified model, slipstreaming model, physical forces acting on pedestrians by signal control and crosswalk boundaries and conflict avoidance force are combined to simulate pedestrians at crosswalk. Based on the simulation results, the variations of crossing speed and potential accidents were analyzed. It is found that slipstreaming behavior can increase the crossing speed and reduce crossing time of bidirectional pedestrians; the conflict avoidance force can efficiently reduce potential accidents.

Key words: engineering of communications and transportation system, social force model, slipstreaming behavior, conflict avoidance, crosswalk

中图分类号: 

  • U491

图1

行人视野范围示意图"

图2

人行横道边界对行人的作用力"

图3

行人避免冲突产生的作用力"

图4

冲突避让流程图"

表1

参数标定结果"

参数参数值p值
行人质量mα、mβ1–
行人之间物理力的强度Aαβ11.150.01
行人之间物理力影响距离Bαβ110.04
时间步Δt/s0.06–
行人与边界之间斥力的强度ABαr50.04
行人与边界之间斥力的范围BBαr0.10.02
行人与边界之间引力的强度ABαa4.70.01
行人与边界之间引力的范围BBαa0.20.02
行人与信号灯之间作用力强度ASα0.080.02
行人与信号灯之间作用力范围BSα0.030.03
行人半径r/m0.3–
视野半径vs/m4–
适应时间τα/s0.5–
各向异性λα0.3–
期望速度vα0(t)/（m·s－1）1.47–
阈值gi7–

图5

观测与模拟速度对比"

图6

N=30时不同模型仿真平均速度v与时间步t的关系曲线"

图7

N不同时平均速度v与时间步t的关系曲线"

图8

行人过街的潜在事故数对比"

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