双向四车道高速公路超车道封闭施工作业区交通运行特性研究  

Research on Traffic Operation Characteristics of Closed Construction Working Area of Dual 2-lanes Expressway

作　　者：陈卫霞 郑俞 孟祥海[3] 孙佳豪 黄曜 田海涛 CHEN Wei-xia;ZHENG Yu;MENG Xiang-hai;SUN Jia-hao;HUANG Yao;TIAN Hai-tao(CCCC Highway Consultants Co.Ltd.,Beijing 100088,China;CCCC-SHEC Sixth Engineering Co.Ltd.,Xi’an 710075,China;School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,China;CCCC Highway Bridges National Engineering Research Centre Co.Ltd.,Beijing 100088,China)

机构地区：[1]中交公路规划设计院有限公司,北京市100088 [2]中交二公局第六工程有限公司,西安市710075 [3]哈尔滨工业大学交通科学与工程学院,哈尔滨市150090 [4]中交公路长大桥建设国家工程研究中心有限公司,北京市100088

出　　处：《公路》2022年第6期229-237,共9页Highway

摘　　要：为了给高速公路施工作业区的交通组织与管控提供一定的理论依据,针对四车道高速公路超车道封闭施工作业区的车头时距分布特性、车辆换道特性、车速分布特性、道路通行能力等交通运行特性开展研究工作。标定了描述车头时距分布的Erlan模型,拟合出了警告区、上游过渡区车辆换道比例曲线,得到了施工作业区各区段的速度分布曲线,确定出了上游过渡区、警告区、施工作业区段等主要区段的道路通行能力。研究结果表明:车辆换道位置集中分布在警告区末端,且仍有少部分车辆在上游过渡区内不安全换道;各区段的车速变化与作业区的交通控制条件大体相当,但减速过程没有及时均匀地出现在合理减速区域上;从上游正常路段至警告区再至施工作业区段道路通行能力逐渐降低,交通瓶颈的施工作业区段(只有一条可通车的车道)道路通行能力只有1 526 pcu/(h·ln)。In order to provide a certain theoretical basis for the traffic organization and management of the expressway construction area, the researches on traffic operation characteristics such as headway distribution characteristics, vehicle lane change characteristics, vehicle speed distribution characteristics, and highway traffic capacity in the four-lane expressway super-vehicle closed construction area. The Erlang model describing the distribution of the headway time is demarcated, the vehicle lane change ratio curve of warning area and upstream transition area is fitted, the velocity distribution curve of each section of the construction operation area is obtained,and the road capacity of the main sections such as the upstream transition area,warning area and construction operation section is determined.The results show that the vehicle lane change position is concentrated at the end of the warning zone,and there are still a small number of vehicles that are unsafely changing lanes in the upstream transition zone;the vehicle speed change of each section is roughly equivalent to the traffic control conditions of the work area,but the deceleration process does not appear in a timely and uniform deceleration area;from the normal road section to the warning zone to the construction operation section,the road capacity is gradually reduced,and the traffic capacity of the construction section of the traffic bottleneck(only one lane can pass the vehicle)is only 1 526pcu/(h·ln).

关 键 词：交通工程 高速公路改扩建 道路通行能力 施工作业区 车头时距分布 换道特性 车速分布特性 

分 类 号：U491.4[交通运输工程—交通运输规划与管理]