期刊论文

Research on the key design parameters of"2+1"lanes layout mode for second-class highway

中文

山西建筑

1009-6825

2024

50

7

118-123

10.13719/j.cnki.1009-6825.2024.07.028

S202210536058:湖南省大学生创新创业训练计划项目 202106:湖南省交通运输厅科技进步与创新项目 20A023:湖南省教育厅重点项目

本校为第一机构

采用"2+1"车道布局有利于解决现状双车道二级公路车辆排队、强行超车等问题,但由于目前国内尚未针对"2+1"车道设计理论开展系统研究,其工程实践非常欠缺.通过对公路设计规范、国外"2+1"车道设计等资料的分析,确定了二级公路"2+1"车道布局概念模式,并运用交通工程与交通安全方法,对"2+1"车道二级公路超车段、合流与分流渐变段长度等关键参数开展了理论分析,然后运用交通仿真手段,采用效率评价指标对理论分析结果进行测试、调优,最终确定了"2+1"车道设计最优参数及适应交通量.其研究成果能为"2+1"车道在我国二级公路上的应用提供技术参考,有望丰富我国二级公路设计建设相关标准.

The adoption of"2+1"lanes layout is conducive to solving the problems of vehicle queuing and forced overtaking on the existing two lanes second-class highway.However,due to the lack of systematic research on the"2+1"lane design theory in China,its engineering practice is very deficient.Based on the analysis of highway design specifications,foreign"2+1"lane design and other data,this paper determines the concept mode of"2+1"lane layout of second-class highway,and u-ses traffic engineering and traffic safety methods to carry out theoretical analysis of key parameters such as overtaking section,m...