轨道交通车站十字冲突区域优化研究

为解决轨道交通车站冲突问题,通过对某轨道交通车站十字冲突区域行人行为的研究,分析了冲突区域的瓶颈竞争,建立了行人步行社会力模型。从优化步行空间方面,提出了十字冲突区域占地面积优化模型和环岛行人流组织方案两种优化方法。运用Massmotion软件对上述优化方案进行仿真,提出了行人滞留量、行人速度、行人密度等评价指标,比较了不同优化方案的实施效果。结果表明,扩大十字区域的面积可以有效增加行人通行空间,行人流平均强度降低13.1%,行人平均密度降低21%;建设环岛对行人提前分流,有效提高行人速度,行人流平均强度降低27.1%,行人平均密度降低27%。

轨道交通十字客流管控方法

为了探究轨道交通十字客流管控策略,对北京市轨道站点的客流组织现状开展调查分析.明确十字客流冲突的形成过程,解析冲突客流基本特征.提出基于可接受间隙理论和环流现象的客流管控优化方法,并采用行人实验的方法开展了2类管控措施的优化效果验证.结果表明:间隙控制方法可有效避免主-次客流冲突,环岛设置方法可有效避免主-主客流冲突;分别从冲突持续时间、客流速度、通行效率方面进行了2类优化措施的效果量化.

Set methods of left-turn waiting zone at signalized intersection

To maximize the number of vehicles passing by the stop-line in a cycle and improve the operation efficiency of intersection in China, the settlement of left-turn lane waiting-zone is becoming prevailing. Based on conflicting-point method, the internal mechanism of left-turn flow after stopping line was analyzed through taking postposition left-turn lane waiting-zone intersection for instance. The relationship between the first left-turn vehicle and the last vehicle of previous phase passing the conflicting point was expounded. According to the time of successive arriving of two vehicle flows at conflicting-point, the reasonable layout for waiting area of left-turn vehicles was researched when the clearance index was less than O. The results suggest that the appropriate layout for waiting area of left-turning vehicles can improve the operation efficiency of intersections.