涌泉枢纽合流区拥堵原因分析与缓堵保畅措施研究

Research on Congestion Causes and Congestion Mitigation Measures at Yongquan Interchange Merging Area

涌泉枢纽作为天府机场高速公路与成宜高速公路合流并线节点,在节假日期间合流端部拥堵严重。基于春节期间及日常交通量结果,对路段交通运行特征进行评价。通过对涌泉枢纽拥堵原因进行深入分析,确定较大的合流交通量导致服务水平不足是产生拥堵的重要致因,合流端部车道数提前减少降低通行能力、主线行车道实线分界线影响合流交通汇入是形成交通拥堵的次要原因。基于拥堵原因分析结果,提出涌泉枢纽互通缓堵保畅原则及近期、远期采用的主要措施。研究对于提高高速公路运营水平、提高交通枢纽综合效益具有重要作用,并为今后类似问题处理提供借鉴。

As a merging point of Tianfu Airport Expressway and Chengyi Expressway,Yongquan System Interchange experiences severe congestion at its merging area during holidays.This paper comprehensively evaluates the traffic operation characteristics of road sections based on the traffic volume during Spring Festival and on regular days.Through in depth analysis and research,this paper identifies the main cause of congestion at the Yongchuan Interchange as inadequate service levels due to high merging traffic volumes.At the same time,the premature reduction of lanes at the merging area has reduced traffic capacity.Additionally,the solid line markings on the mainline lanes have also hindered the smooth merging of traffic,further contributing to traffic congestion as a secondary factor.Based on the analysis of congestion causes this paper proposes the principle of alleviating congestion and ensuring smooth traffic flow at the Yongquan System Interchange,as well as major short term and long term measures.This study plays an important role in enhancing the operational efficiency and optimizing comprehensive benefits of traffic hubs.Furthermore,it also provides valuable reference for addressing similar traffic issues in the future.