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《城市交通》杂志
2006年 第6期
Vissim仿真软件模型参数标定与应用
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文章编号:1672-5328(2006)06-0022-04

杨洪1 韩胜风2 陈小鸿1
(1.同济大学交通运输学院,上海 200092; 2.上海市道路交通研究中心,上海 200092)

摘要:交通仿真技术对于道路交通研究工作提供了十分重要的工具。尽管各仿真软件有自身的特色,但就其核心思想而言并未发生深刻变化。仅以在国内外应用较为广泛的Vissim仿真软件为例,简要介绍了仿真系统的基本结构,并对路段仿真所涉及的相关参数进行了剖析。重点选取显著影响仿真结果的跟车模型所关联的参数进行多情景实验分析,对比仿真结果与规范值,得出在通常情况下较为合理的参数取值范围。最后,结合实际应用,拟定一个双车道路段仿真实验方案,比较不同仿真参数取值时仿真路段交通特性的变化,进一步验证了实验参数调整的重要性。

关键词:Vissim;路段仿真;跟车模型;参数标定

中图分类号:U491. 1+23

文献标识码:A

Parameter Calibration and Application for the Vissim Simulation Model

YANG Hong1, HAN Shengfeng2, CHEN Xiaohong1
(1. School of Transportation Engineering, Tongji University, Shanghai  200092, China; 2. Shanghai Road Traffic Research Center, Shanghai 200092, China)

Abstract: Traffic simulation technique provides a critical tool for traffic engineering studies. Although the software features vary across different simulation packages, the fundamental simulation mechanism of those packages remains the same. Taking Vissim, a well-known traffic simulation software tool, as an example, this paper briefly introduces the basic structure of the simulation system, and analyzes the parameters related to link traffic simulation. An emphasis was placed on analyzing vehicle-following model related parameters that significantly influence the simulation results of different scenarios. A comparison of standard parameter values with the simulation results leads to a relatively reasonable range of parameter values under normal conditions. Finally, based on a simulation scenario for a two-lane street segment, the importance of adjusting the experimental parameters was validated through variations of traffic characteristics resulted from different parameter values used in the simulation.

Key words: Vissim; link traffic simulation; car-following model; parameter calibration