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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2023, Vol. 42 ›› Issue (9): 69-76.DOI: 10.3969/j.issn.1674-0696.2023.09.10

• 交通基础设施工程 • 上一篇    

客货分离高速公路单车道减速车道长度研究

潘兵宏1，李成财2，葛蕊诚1，李翔1   

  1. (1. 长安大学 公路学院，陕西 西安 710064； 2. 中国电建集团华东勘测设计研究院有限公司，浙江 杭州 311122)
  • 收稿日期:2022-04-01 修回日期:2022-07-03 发布日期:2023-10-16
  • 作者简介:潘兵宏（1974—），男，湖北黄陂人，副教授，博士，主要从事道路工程方面的研究。E-mail：409291838@qq.com 通信作者：葛蕊诚（1997—），男，陕西兴平人，硕士研究生，主要从事道路工程方面的研究。E-mail：1356075122@qq.com
  • 基金资助:
    河北省高速公路安全评价技术及高风险路段甄别技术研究专项项目(19275601D)

Length of Single Lane Deceleration Lane on Car and Truck Separation Highway

PAN Binghong1, LI Chengcai2, GE Ruicheng1, LI Xiang1   

  1. (1. School of Highway, Chang’an University, Xi’an 710064, Shaanxi, China; 2. Power China Huadong Engineering Co., Ltd., Hangzhou 311122, Zhejiang, China)
  • Received:2022-04-01 Revised:2022-07-03 Published:2023-10-16

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摘要： 客货分离高速公路上采用客、货专用出口时，因减速车道上车型不同，其车道长度应有别于客货混行形式。基于跟踪雷达实测车辆在出口范围内的运行数据，构建了驶出车辆速度与减速距离之间的回归函数，并采用拟合优度选择方法，确定了单车道减速车道长度计算模型；根据实测数据和回归函数，确定了减速车道长度计算模型中的减速度、初速度、分流鼻运行速度等关键参数的取值，提出了减速车道长度和渐变率的建议值。研究结果表明：出口范围内大多数车辆减速过程为一次匀减速，且减速起点为渐变段起点，减速车道由渐变减速段和等宽减速段构成；货车专用减速车道长度大于客车专用减速车道的长度，我国规范规定的减速车道长度基本满足客车驶出减速的需要，但不满足货车所需减速长度，驶出的货车需要在主线上提前减速。

关键词: 道路工程；专用减速车道长度；减速模型；客货分离高速公路

Abstract: When using a dedicated exit for passenger and freight on a car and truck separation highway, the length of the deceleration lane should be different from that of the mixed passenger and freight traffic form due to different types of vehicles on the deceleration lane. Based on the operational data of the vehicles within the exit range measured by the tracking radar, the regression function between the speed of the exiting vehicles and the deceleration distance was constructed and a single lane deceleration lane length calculation model was determined by using the goodness of fit selection method. According to the measured data and the regression function, the values of key parameters in the deceleration lane length calculation model such as deceleration speed, initial speed and running speed of distributing spot were determined. The recommended values of the length of dedicated deceleration lane and the gradual rate were proposed. The research results show that most vehicles within the exit deceleration process are in a uniform deceleration, the starting point of deceleration is the starting point of gradual section, and the deceleration lane is composed of gradual deceleration section and equal width deceleration section. The length of the dedicated deceleration lane for trucks is greater than that of the dedicated deceleration lane for cars. The deceleration lane length specified in China’s regulations basically meets the needs of passenger cars to decelerate when driving out, but it does not meet the required deceleration length for trucks. The departing trucks need to decelerate in advance on the main line.

Key words: highway engineering; length of dedicated deceleration lane; deceleration model; car and truck separation highway

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