高速公路改扩建中央分隔带开口长度通用计算模型构建与验证

doi:10.16097/j.cnki.1009-6744.2023.04.026

交通运输系统工程与信息 ›› 2023, Vol. 23 ›› Issue (4): 262-269.DOI: 10.16097/j.cnki.1009-6744.2023.04.026

高速公路改扩建中央分隔带开口长度通用计算模型构建与验证

郝嘉田¹，吴忠广^*1，田万利¹，韩峰²，刘博文³

1. 交通运输部科学研究院，标准与计量研究中心，北京 100029；2. 江苏省交通工程建设局，南京 210004； 3. 江苏现代路桥有限责任公司，南京 210096

收稿日期:2023-03-16 修回日期:2023-05-23 接受日期:2023-06-19 出版日期:2023-08-25 发布日期:2023-08-22
作者简介:郝嘉田(1996- )，男，北京人，研究实习员
基金资助:
江苏省交通工程建设局科技项目(2021(平广扩)055)；江苏省交通运输科技项目(2021(平广扩)243)

Construction and Validation of a General Calculation Model on Median Opening Length for Expressway Renovation and Expansion Project

HAO Jia-tian¹, WU Zhong-guang^*1, TIAN Wan-li¹, HAN Feng², LIU Bo-wen³

1. Research Center for Standards and Metrology, China Academy of Transportation Sciences, Beijing 100029, China; 2. Jiangsu Provincial Transportation Engineering Construction Bureau, Nanjing 210004, China; 3. Jiangsu Xiandai Road ＆ Bridge Co. Ltd., Nanjing 210096, China

Received:2023-03-16 Revised:2023-05-23 Accepted:2023-06-19 Online:2023-08-25 Published:2023-08-22
Supported by:
Science and Technology Project of Jiangsu Transportation Engineering Construction Bureau (2021(平广扩)055)；Science and Technology Project of Jiangsu Transportation Engineering (2021(平广扩)243)

摘要/Abstract

摘要： 为解决高速公路改扩建工程中多车道转换中央分隔带开口长度设置的问题，本文基于中央分隔带开口转换路段车辆行驶稳定性分析，以多车道转换时最内侧车道行驶的车辆不产生横向滑移的圆曲线半径作为多车道开口转换路段最小转弯半径，利用中央分隔带开口处道路线形几何关系，建立多车道转换中央分隔带开口长度通用计算模型。考虑车辆在多车道中央分隔带开口转换路段处的行驶安全与效率，选取时间占有率、路段饱和度、速度一致性和路段行程延误作为评价指标，建立中央分隔带开口转换路段车辆运行状态评价云模型。通过VISSIM仿真获取多车道转换中央分隔带开口处车辆运行评价指标数据，运用云模型确定不同转换车道数、不同中央分隔带开口长度条件下车辆运行状态等级。结果表明：依据本文所建模型设置多车道转换中央分隔带开口长度时，2车道与4车道转换条件下车辆运行状态综合评价结果为K1等级，5车道与6车道转换条件下车辆运行状态综合评价结果均在K2等级以上。验证了本文所建多车道转换中央分隔带开口长度模型可保障车辆在开口转换路段运行状态，且在保证中央分隔带开口转换路段最内侧车道车辆行驶稳定性的基础上可提高路段整体车辆运行的安全与效率。

关键词: 交通工程, 开口长度, 云模型, 中央分隔带, 高速公路改扩建, 交通仿真

Abstract: In order to solve the median opening length setting problem in the expressway renovation and expansion project, we analyze the vehicle driving stability in the median opening section. The curve radius of the innermost lane in the multi-lane conversion without transverse slip was taken as the minimum turning radius of the multi-lane median opening section, and the geometric relationship of the road alignment at the multi-lane median opening section was used to establish the general calculation model of the multi-lane median opening length. Considering the driving safety and efficiency of vehicles at the multi-lane median opening section, the time occupancy rate, section saturation, speed consistency, and section trip delay were selected as evaluation indexes to establish the cloud model for evaluating the vehicle operation status. By VISSIM simulation, we obtain the evaluation index data of vehicle operation at the multi-lane median opening section and used the cloud model to determine the vehicle operation status level under different numbers of conversion lanes and different median opening lengths. The results show that, with the median opening length obtained by the proposed model, the comprehensive evaluation results of vehicle operation status under the conditions of 2-lane and 4-lane are at K1 grade, and the comprehensive evaluation results of vehicle operation status under the conditions of 5-lane and 6-lane are above K2 grade. It is proved that the proposed median opening length model can guarantee the vehicle driving state in the median opening section, and it can improve the overall vehicle running safety and efficiency of the section and ensure the driving stability of the innermost lane of the median opening conversion section.

Key words: traffic engineering, opening length, cloud model, median, expressway renovation and expansion, traffic simulation

中图分类号:

U491

郝嘉田, 吴忠广, 田万利, 韩峰, 刘博文. 高速公路改扩建中央分隔带开口长度通用计算模型构建与验证[J]. 交通运输系统工程与信息, 2023, 23(4): 262-269.

HAO Jia-tian, WU Zhong-guang, TIAN Wan-li, HAN Feng, LIU Bo-wen. Construction and Validation of a General Calculation Model on Median Opening Length for Expressway Renovation and Expansion Project[J]. Journal of Transportation Systems Engineering and Information Technology, 2023, 23(4): 262-269.

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http://www.tseit.org.cn/CN/Y2023/V23/I4/262

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高速公路改扩建中央分隔带开口长度通用计算模型构建与验证

Construction and Validation of a General Calculation Model on Median Opening Length for Expressway Renovation and Expansion Project

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