基于可靠度的单轨道交通施工区建设方案优化

发布时间：2018-01-17 00:34

本文关键词：基于可靠度的单轨道交通施工区建设方案优化　出处：《交通运输系统工程与信息》2017年05期 　论文类型：期刊论文

【摘要】：为降低城市轨道施工对交通流的影响,建立了基于可靠度的施工区形式及建设时序综合优化模型.施工区的规定阈值时间与实际行程时间之差大于零的概率为可靠度,分别建立交叉口及路段施工区的可靠度模型.定义可靠度与施工时长之积为施工效率系数,以全施工周期效率系数折减最少为目标,建立施工区建设方案综合优化模型,优化施工区形式及建设时序.西安市轨道交通汉城南路站方案的测试结果表明,施工区形式及建设时序会使道路交通可靠度产生不同程度的折减.该方法可为城市轨道交通施工方案的制订提供理论依据.
[Abstract]:In order to reduce the impact of urban rail construction on traffic flow. A comprehensive optimization model of construction area form and construction time sequence based on reliability is established. The probability that the difference between the specified threshold time and the actual travel time in the construction area is greater than zero is reliability. The reliability models of intersection and construction area are established respectively. The product of reliability and construction time is defined as the construction efficiency coefficient, and the goal is to reduce the efficiency coefficient to the minimum during the whole construction period. The comprehensive optimization model of the construction project, the form of the construction area and the construction timing are established. The test results of the Seoul South Road Station of Xi'an Rail Transit show that. The form of construction area and the time sequence of construction will reduce the reliability of road traffic in different degrees. This method can provide theoretical basis for the formulation of urban rail transit construction scheme.
【作者单位】：中交第一公路勘察设计研究院;长安大学公路学院;
【基金】：国家自然科学基金(51408049) 中国博士后科学基金(2016M590914) 陕西省自然科学基础研究计划项目(2015JQ5167) 陕西省博士后科研项目(2016BSHEDZZ134) 中央高校基本科研业务经费专项资金(310821161011,310821172202)~~
【分类号】：U215;U491
【正文快照】： 0引言城市轨道交通施工占用道路空间资源多、施工周期长、多采用分批施工,对城市交通流的运行带来不利影响[1].各城市在轨道交通施工前均对施工区域交通组织及管控措施进行研究[2-3],以降低施工期间对通行能力或运行车速[4]等的影响.目前对施工区交通组织优化措施的研究多集中

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