基于高速公路基本路段通行能力分析的VISSIM模型优化  

Optimization of VISSIM Model Based on Traffic Capacity Analysis of Expressway Basic Road Section

作　　者：王君 WANG Jun(Engineering Design Institute of CCCC Fourth Highway CO.,LTD.Xian'an Shannxi 710065)

机构地区：[1]中交第四公路工程局有限公司西安工程设计分公司,陕西西安710065

出　　处：《黑龙江交通科技》2020年第5期184-186,共3页Communications Science and Technology Heilongjiang

摘　　要：使用交通仿真软件模拟通行能力的过程中,车道数、车道宽度和设计速度等因素对其影响未知,造成建模不准确,从而导致仿真结果与真实值存在误差。通过在VISSIM建立高速公路基本路段仿真模型,改变上述影响因素的取值发现影响规律,并得出随大车率增加、设计速度降低,通行能力值降低;车道数增加,通行能力值出现与实际相反的结果;车道宽度改变对通行能力没有影响。此外,期望车速的输入值需采用实际调查的数据。研究结果为交通仿真软件通行能力建模的优化问题提供了依据。In the process of using traffic simulation software,the influence of the lane numbers,lane width and design speed,etc.on traffic capacity is unknown,resulting in inaccurate modeling,and further resulting in errors between the simulation results and the true values.This paper establishes a simulation model in VISSIM and changes the value of the above influencing factors.It is concluded that as the large vehicle rate increases,the design speed decreases,resulting in the capacity value decreases;as the lane number increases,the capacity value appears to have the opposite result from the actual situation;the lane width change has no effect on the capacity.In addition,the input value of the expected vehicle speed needs to use actual survey data.The research results provide a basis for the optimization problem of traffic simulation software of highway capacity modeling.

关 键 词：交通工程 VISSIM微观仿真 通行能力 影响因素 期望速度 

分 类 号：U492[交通运输工程—交通运输规划与管理]