基于等效通行能力的施工区交通影响评价方法  

Evaluation Method of Traffic Impact Evaluation Method of Work Zones Based on Equivalent Capacity

作　　者：邵长桥 郭杰 SHAO Chang-qiao;GUO Jie(Beijing Key Laboratory of Transportation Engineering,College of Metropolitan Transportation,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城市交通学院北京市交通工程重点实验室,北京100124

出　　处：《科学技术与工程》2023年第20期8873-8880,共8页Science Technology and Engineering

基　　金：国家“973”计划(2012CB23303)。

摘　　要：随着中国机动车保有量的持续增长,现有的城市道路资源已不满足交通需求,许多城市都在对已有道路进行升级改造,频繁的道路施工对城市交通运行产生了巨大影响。针对城市道路结构特征,提出一种适用于城市占道施工区的交通影响评价方法。结合城市道路所具有的间断流设施特点,应用等效通行能力概念给出了等效饱和度城市占道施工区交通影响评价指标;基于改进的美国道路局模型(Bureau of Public Road,BPR),给出了适用于城市道路的行程时间计算模型,并给出了行程时间可靠性评价指标评价方法;综合考虑了平均延误、等效饱和度、行程时间可靠性评价指标,提出了城市占道施工区交通影响综合评价方法,从“点”“线”“面”3个不同维度给出了城市占道施工区交通影响评价阈值;结合交通影响评价阈值给出了城市占道施工区交通影响范围确定流程。仿真结果表明,所建立的基于等效通行能力的施工区交通影响评价方法解决了已有方法计算难度大,难以应用于实际的问题,且综合不同层面给出了具体的交通影响评价阈值,克服了传统方法只从单一层面确定交通影响评价阈值的缺陷。With the continuous growth of the number of motor vehicles in China,the existing urban road resources can no longer meet the traffic demand.Many cities are upgrading the existing roads,and frequent road construction has had a huge impact on urban traffic operation.Aiming at the characteristics of urban road structure,a traffic impact assessment method suitable for urban arterial work zones was proposed.Combined with the characteristics of intermittent flow facilities of urban roads,the concept of equivalent capacity was applied to give the traffic impact evaluation index of equivalent saturation urban arterial work zones.Based on the improved bureau of public road(BPR),model,a travel time calculation model suitable for urban roads was given,and an evaluation method of the reliability evaluation index of the travel time was provided.Taking into account the evaluation indicators of average delay,equivalent saturation,and evaluation index of the travel time reliability,a comprehensive evaluation method for the traffic impact of urban arterial work zones was proposed.The evaluation threshold for traffic impact in urban arterial work zones was given from three different dimensions:“point”“line”and“surface”.The process for determining the scope of traffic impact in urban arterial work zones was provided based on the threshold of traffic impact assessment.The simulation results show that the established traffic impact assessment method for construction area based on equivalent traffic capacity established solves the problem that the existing methods are difficult to calculate and difficult to apply in practice,and gives specific traffic impact assessment thresholds at different levels,overcoming the defect that traditional methods only determine the traffic impact assessment threshold from a single level.

关 键 词：等效通行能力 占道施工 交通影响 评价指标 VISSIM仿真 

分 类 号：U491[交通运输工程—交通运输规划与管理]