北京轨道交通28号线系统制式选择

System Selection of Urban Rail Transit Line 28 in Beijing

在中央商务区区域规划城市轨道交通无法满足出行要求的背景下,提出建设北京轨道交通28号线。这种"后建设补充发展"的城市轨道交通具有线路条件较差、客流特殊、工程投资风险高的工程特点,其系统制式的选择应通过综合比选。对线路的功能定位、线路条件及客流需求进行分析,在跨坐式单轨系统、自动导向轨道系统、中低速磁悬浮系统、高地板铰接车、直线电机Lb型车5种中运量系统中初选出自动导向轨道系统及直线电机Lb型车系统。对该两种制式进行详细对比研究后认为,直线电机Lb型车系统具有良好的线路适应性和系统包容性,建议28号线选用此制式。

Because the rail transit planning in central business district is unable to meet the travel requirements, the construction of Beijing rail transit Line 28 is proposed. This rail transit with "post-construction and supplementary development" characters will face up to poor line condition, special passenger flow and high engineering investment risks, therefore the selection of system standard should be considered comprehensively. Through analyzing the functional localization, line conditions and passenger flow requirements, AGR (automatic guided rail) system and Lb-type vehicle are preliminary selected from 5 medium traffic systems, including straddle monorail system, AGR, low-speed magnetic suspension system, high and low panel articulated vehicle and Lb-type vehicle. After a detailed comparative study of the two selected systems, due to the better line adaptability and system inclusiveness, the Lb-type vehicle is accounted to be more suitable for Line 28 and therefore is recommended.