文章编号：1672-5328（2010）02-0066-09

王晓华，朱兆芳，曾　伟
（天津市市政工程设计研究院，天津 300051）

摘要：城市快速路互通立交通行能力在现行的规范、规程中缺乏相应的分析、计算方法。为了寻求其可行的分析、计算方法，合理确定互通立交的规模和形式，以天津市快速路典型互通立交为例，采集大量数据，利用数理统计方法，分析互通立交各组成部分的交通特性。通过实测数据的标定，建立互通立交仿真实验平台，得到天津市快速路互通立交基本路段，分、合流区，交织区，各类型匝道的通行能力推荐值，并提出了互通立交通行能力的计算公式。最后针对如何提高互通立交的通行能力给出了设计建议。

关键词：交通工程；互通式立交；通行能力；仿真

中图分类号：U491.1⁺14

文献标识码：B

Interchange Capacity of Urban Expressways in Tianjin

WANG Xiao-hua, ZHU Zhao-fang, ZENG Wei
(Tianjin Municipal Engineering Design & Research Institute,Tianjin 300051, China)

Abstract：Lack of the detailed interchange capacity analysis method is a problem in the current specification of urban expressway design. In order to develop a feasible and reliable computational method to determine a proper interchange design alignment, this paper, taking typical urban expressway interchanges in Tianjin as examples, analyzes the traffic characteristics at each part of an interchange with the massive collected data. A simulation platform is developed based on the real-world data, which is used to recommend capacity values for basic segment, diverging and merging segments of an interchange, as well as for various types of ramps. Finally, the paper provides a few suggestions on how to improve the capacity of interchange.

Keywords：traffic engineering; interchange; capacity; simulation