摘要
超多车道高速公路出口指路标志前置距离的研究可以为道路管理者和设计者提供参考,并提高超多车道高速公路的安全性和运行效率。文章以车辆驶出的运动过程特性为基础,构建了以车道数为参数的高速公路出口指路标志前置距离理论模型,并标定了模型的参数;对比分析了不同主线限速、指路标志设置方式和匝道限速条件下不同车道数的高速公路出口指路标志前置距离。结果表明:在相同条件下,高速公路龙门架式出口指路标志的前置距离不应小于路边直立式的;当高速公路出口指路标志为路边直立式时,双向十车道标志前置距离为2.7、1.7和1.2 km,而双向十二车道标志前置距离则为2.9、1.9和1.4 km;当高速公路出口指路标志为龙门架式时,双向十车道标志前置距离为2.8、1.8和1.3 km,而双向十二车道标志前置距离则为3.0、2.0和1.5 km。
The study on the leading distance of the exit signs on super multi lanes expressway can provide reference for road managers and designers,and also enhance the safety and operational efficiency of super multi lanes expressway.Based on the characteristics of the movement process of vehicles exiting,this study establishes a theoretical model of the leading distance to expressway exit signs with the number of lanes as the parameter,and calibrates the parameters of the theoretical model.Comparative analyses are conducted on the leading distance of expressway exit signs for different lane numbers under different mainline speed limits,setting methods of guide signs,and ramp speed limits.The results show that under the same conditions,the leading distance of the gantry structure exit signs is not less than the leading distance of the vertical structure exit signs at the roadside.For the vertical structure expressway exit signs,the leading distances of the signs are 2.7,1.7,and 1.2 kilometers for two-way ten lanes expressway,and 2.9,1.9,and 1.4 kilometers two-way twelve lanes expressway.For the gantry structure expressway exit signs,the leading distances of the signs are 2.8,1.8,and 1.3 kilometers for two-way ten lanes expressway,and 3.0,2.0,and 1.5 kilometers for two-way twelve lanes expressway.
作者
李美玲
叶新雨
姚坤
樊兆董
申全军
LI Meiling;YE Xinyu;YAO Kun;FAN Zhaodong;SHEN Quanjun(School of Transportation Engineering,Shandong Jianzhu University,Jinan 250101,China;Shandong Transportation Institute,Jinan 250102,China;Innovation Research Institute of Shandong Hi-speed Group Co.,Ltd.,Jinan 250000,China)
出处
《山东建筑大学学报》
2024年第4期73-80,共8页
Journal of Shandong Jianzhu University
基金
山东省交通运输科技计划项目(2020B48)。
关键词
超多车道
高速公路
出口指路标志
前置距离
车道数
参数标定
super multi lanes
expressway
exit guide sign
leading distance
number of lanes
parameter calibration
