基于Vissim建模的高速公路作业区混合车辆上游过渡区空间安全性研究  

Study on Spatial Security of Expressway Work Area Upstream Transition Zone with Mixed Vehicles Based on Vissim Modeling

作　　者：王晓飞[1] 丁振中 刘永 王孝冬 WANG Xiao-fei;DING Zhen-zhong;LIU Yong;WANG Xiao-dong(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou Guangdong 510641,China;Guangzhou Municipal Engineering Design and Research Institute Co.,Ltd.,Guangzhou Guangdong 510060,China;Guangzhou Yuelu Transport Technology Co.,Ltd.,Guangzhou Guangdong 510630,China)

机构地区：[1]华南理工大学土木与交通学院,广东广州510641 [2]广州市市政工程设计研究总院有限公司,广东广州510060 [3]广州越路交通科技有限公司,广东广州510630

出　　处：《公路交通科技》2022年第12期163-170,共8页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(51878297);广东省自然科学基金项目(2019A1515011477)。

摘　　要：为探究高速公路养护作业区的上游过渡区内部空间风险分布,基于Vissim建模的仿真建模分析方法,提出了速度、加速度的3个风险表征指标,风险表征指标分别为速度标准差、客货车速差和向后的加速度均值。针对三车道过渡至双车道和双车道过渡至单车道2种占道施工形式,分别设计了相应的数据采集断面位置,并收集和整理了在不同运行速度和货车率下的仿真试验数据。进而对风险表征指标进行了最大值化、无量纲化处理,对指标进行加权计算得到了综合评价得分指标。为研究货车率变化对于风险分布的影响趋势,提出了采用均值和平均标准偏差统计参数来表征整体分布和波动情况。试验结果表明:伴随着上游过渡区运行速度的增加,风险集中断面的位置逐渐从上游过渡区入口断面位置向出口断面位置转移,其中占道施工形式为双车道过渡至单车道时移动趋势更加显著;伴随着货车率的增加,综合评价指标的整体分布和波动情况会受到运行速度和占道施工形式的影响,其变化总体呈现出增加-降低-增加的趋势。研究成果可以为高速公路的养护作业上游过渡区的施工策略制订和防护方式选择提供参考,从而降低上游过渡区的作业风险。To explore the internal spatial risk distribution in the upstream transition zone of expressway maintenance operation area,based on the simulation modeling analysis method of Vissim modeling,3 risk characterization indicators for operation speed and acceleration are proposed,which are the standard deviation of speed,the speed difference of passenger and freight vehicles,and the mean backward acceleration.The corresponding data acquisition section positions are designed for the 2 road occupation construction forms(3-lane transition to two-lane,two-lane transition to single lane),and the simulation experimental data at different operating speeds and truck rates are collected and sorted out.Then,the risk characterization indicators are maximized and dimensionless processed,and the indicators are weighted to obtain the comprehensive evaluation scoring indicators.To study the influence trend of truck rate change on risk distribution,the AVG and mean standard deviation(MAD)statistical parameters are proposed to characterize the overall distribution and fluctuation.The experimental result shows that(1)with the increase of the operating speed in the upstream transition zone,the position of risk concentration section gradually transfers from the entrance section of the upstream transition zone to the exit section,and the movement trend is more significant when the road occupation construction form is two-lane transition to single lane;(2)with the increase of the truck rate,the overall distribution and fluctuation of the comprehensive evaluation indicators will be affected by the operation speed and the road occupation construction form,and the changes generally show an increase-decrease-increase trends.The research result can provide a reference for the formulation of construction strategies and the selection of protection methods for the upstream transition zone of expressway maintenance operations,so as to reduce the operation risk of the zone.

关 键 词：交通安全 空间安全性 VISSIM仿真 上游过渡区 运行速度 AHP 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]