大型客运站站区交通拥堵仿真评价方法

Traffic congestion simulation and evaluation method for large passenger station region

客运站站区是连接大型客运站与区外交通的重要集散通道。根据客运站站区的实际情况,基于"点-线-面"的思想,提出"路段(交叉口)-道路-路网"3个层次的站区交通拥堵评价指标体系,并基于"状态分类"与"集成加权"原理提出"点"、"线"、"面"层的交通拥堵强度评价方法。以北京南站为实例,建立VISSIM仿真平台,对北京南站站区交通拥堵强度进行仿真评价与优化。研究结果表明:站区内大部分"点"处于轻度拥堵状态,部分"线"为严重拥堵,而整体路网的拥堵强度为中度拥堵,说明拥堵效果具有累加性,某一拥堵点的形成可能会造成整个路网的拥堵。

The passenger station region is an important distribution channel which connects the large passenger station with the outside traffic of the region.Based on the actual situation of passenger station region and'point-line-area'thought,a'section(intersection)-road-network'traffic congestion evaluation index system was built for the passenger station region.Moreover,the combined method of 'status division'and 'integrated weighting'was adopted to evaluate the traffic congestion intensity of'point','line'and'area'layers.Furthermore,a VISSIM simulation platform was established for the Beijing South Railway Station region to simulate and evaluate its traffic congestion intensity.The result shows that most of the'points'are in a state of mild congestion,parts of the'lines'are severe congested,and the whole network's traffic congestion intensity is moderate congested.This means that the congestion has a cumulative effect and a congested point may lead to the whole network congestion.3tabs,1fig,10 refs.