城市地下车行环路精细化交通管控研究——以广州南沙横沥岛尖地下车行环路为例

Study on Refined Traffic Control of Urban Underground Ring Road for Guangzhou

地下车行环路多与城市中心商务区地下空间相连通,形成规模较大的地下路网结构,整合了区域地下停车资源,已成为改善交通拥堵、空间缺乏等问题的一条较为有效的途径。然而,地下车行环路存在诸多衔接界面,不同系统间的交通流交织频繁,同时,交通出行潮汐效应明显,早晚高峰局部进出环路的交通流集中,易产生交通瓶颈。研究分析了预防和疏解地下环路交通拥堵的基本需求,从建议类和强制干预类角度提出了典型的交通管控对策。在此基础上,总结了几种地下车行环路典型交通管控需求场景,并以南沙横沥岛尖地下车行环路为例,选取突发事件下地块出口控制、地下车行环路-地块出入口一体化联动控制、重点路段的实时监管、地下车行环路洞口控制等几个场景,进行了精细化交通管控对策分析与建议。

Underground ring roads are mostly connected to the underground space of the urban central business district to form a large-scale underground road network and integrate the regional underground parking resources,which has become a more effective way to improve the traffic congestion,lack of space and the others.However,there are many interfaces in the underground ring roads,and the traffic flows among the different systems are frequently intertwined.At the same time,the tidal effect of traffic travel is obvious,and the traffic flow in and out of the ring road is concentrated in the morning and evening peaks,which is easy to produce the traffic bottlenecks.The basic needs to prevent and relieve the traffic congestion in the underground ring roads are studied and analyzed.The typical traffic control countermeasures are proposed from the perspective of suggestion and mandatory intervention.On this basis,several typical traffic control demand scenarios of underground ring roads are summarized.Taking the underground ring road at Hengli Island in Nansha as an example,several scenarios are selected such as the exit control of parking lot under emergencies,the integrated linkage control of underground ring road and parking lot passageway,the real-time supervision of key road sections,and the entrance control of underground ring road.The countermeasures and suggestions for the refined traffic control are analyzed.