基于交通仿真的广汇立交桥交通拥堵改善方案研究

Guanghui Overpass Traffic Congestion Improvement Plan Based on Traffic Simulation

乌鲁木齐市广汇立交桥是苜蓿叶形完全互通式立交桥,是该区域交通的典型拥堵点。文章通过交通数据调查,分析了该立交桥交通拥堵的成因,从交织区域交通流的优化和提高匝道通行能力角度提出了交通组织优化方案,并利用交通微观仿真软件Vissim对该立交桥现状交通情况和优化组织方案进行了仿真比较。仿真结果显示优化后的立交桥区域交通拥堵情况得到了明显改善,研究成果可为该类型立交桥的交通组织提供参考。

Urumqi Guanghui overpass is the complete cloverleaf interchange, which is the typical traffic congestion point in this area.Through the traffic data investigation,this article analyzed the causes for the traffic congestion of this overpass, proposed the traffic organization optimization plan from the per- spective of optimizing the traffic flow of interweaving area and enhancing the ramp traffic capacity, and conducted the simulation comparison on the current traffic situation and optimization organization plan of this bridge by using the Vissim microscopic traffic simulation software.The simulation results showed that the regional traffic congestion of this overpass after the optimization has been significantly im- proved,and the research results can provide the reference for the traffic organization of similar over- pass.