基于VISSIM仿真的冰雪条件下快速路交织区长度确定研究  

Study on Length Determination of Weaving Area in Urban Expressway under Ice-snow Conditions Based on Vissim Simulation

作　　者：李明剑[1] 练象平[1] 王志华[1] 

机构地区：[1]天津市市政工程设计研究院,天津市300074

出　　处：《城市道桥与防洪》2015年第11期179-182,23,共4页Urban Roads Bridges & Flood Control

摘　　要：通过控制交织区长度以及快速路主线交通量对道路在正常条件、积雪条件、冰板条件以及冰膜条件四种情况下的交通状况,利用VISSIM仿真软件进行仿真。选取了时间占有率的指标进行服务水平评价。结果表明,随着道路条件变得逐渐恶劣,时间占有率有大幅增加。在正常、积雪和冰板条件下,交织区长度的增加可以在一定程度上提高快速路的服务水平。而在冰膜条件下,交织区长度对于快速路服务水平的影响并不显著。该研究成果可以为快速路交织区的设计提供参考。Through the control of the length of weaving area and the traffic flow of the expressway, the paper simulates the traffic status of road under four normal, snowing, ice sheet and ice film conditions by VISSIM simulation software. The paper selects the index of time occupancy to assess the service level. The result shows that the time occupancy has a rapid increment with the condition of roads becoming more and more serious. Under the normal, snowing and ice sheet conditions, the length increment of wearing area can improve the service level of expressway to some extent, but under the ice film condition, the length of wearing area does not significantly affect the service level of expressway. This study result can be referenced for the design of expressway wearing areas.

关 键 词：城市快速路 交织区长度 冰雪条件 交通仿真 服务水平 

分 类 号：U491.1[交通运输工程—交通运输规划与管理]