货运停车场出口与信号交叉口合理间距计算及拥堵改善措施  

Reasonable Distance Calculation and Congestion Improvement Measures Between Exit of Freight Parking Lot and Intersection

作　　者：李启凡 丁文龙 潘晓东[1] 陈丰[1] LI Qifan;DING Wenlong;PAN Xiaodong;CHEN Feng(The Key Laboratory of Road and Traffic Engineering,Ministry of Education,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804

出　　处：《公路工程》2024年第4期149-154,共6页Highway Engineering

基　　金：国家自然科学基金项目(51978522)。

摘　　要：货运停车场出口与相邻信号交叉口距离过短容易造成主路的交通堵塞与货车的出行困难,该问题在物流园区出入口等货车占比较大的接入口也十分常见。为探究并减小货运停车场出口出行车辆对主路交通的影响,运用排队理论,参考无信号T型交叉口交通特征,建立货运停车场出入口与相邻信号交叉口合理距离计算模型,模型考虑货车车身长度、转弯半径等货车特征,对货车占比较大的接入口有更好的适用性。在实际场景中评价出入口与相邻信号交叉口距离的合理性,并对模型有效性进行验证,结果表明:构建模型的评价结果与场景实际情况均较为吻合,且能够较好地计算出货运停车场出口与相邻信号交叉口合理距离,实际场景中不能满足合理距离要求的货运停车场出口常出现货车出行困难,主路交通拥堵等不良交通状况。研究针对实际场景中出现的不良交通状况提出了相应改善措施。研究成果可为货运停车场出口接入管理提供理论指导。The short distance between the exit of the freight parking lot and the adjacent signalized intersection is easy to cause traffic jams on the road and difficulties for trucks to travel out of the parking.This problem is also very common in the exit of the logistics park where trucks occupy a large proportion.To explore and reduce the influence of export cargo parking lots on the main road traffic,this paper using the queuing theory,the reference T intersection with no traffic signal,establish a reasonable freight car park entrances and adjacent signal intersection distance calculation model.Model considers trucks characteristics such as body length,turning radius,andit has better applicability to the entrance where the trucks occupation is large.Using actual scene to prove the rationality of the distance between the parking exit,the adjacent signalized intersection and the validity of the model.The results showed that:the evaluation results of the model constructed in this paper are consistent with the actual situation of the scene,and can better calculate the reasonable distance between the exit of the freight parking lot and the adjacent signalized intersection.The actual scene which cannot meet the requirements of reasonable distance at the exit of the freight parking lot often appear lorry travel difficulties,traffic jams on the main road and other bad traffic conditions.This research provides some suggestions about the problems existing in the actual scene.Results can provide theoretical guidance for the exit access management of freight parking lot.

关 键 词：货运停车场 出口 信号交叉口 货车特征 排队论 合理距离模型 

分 类 号：U491[交通运输工程—交通运输规划与管理]