信号交叉口通行能力随机影响因素建模（英文）  

Modeling Effect of Random Factors on Signalized Intersection Capacity

作　　者：赖元文[1] EASA S 

机构地区：[1]福州大学土木工程学院,福建福州350116 [2]瑞尔森大学土木工程系

出　　处：《中国公路学报》2016年第11期130-138,共9页China Journal of Highway and Transport

基　　金：financially supported by the National Scholarship Fund,Natural Science Fund of Fujian Province (2014J05060)

摘　　要：为了确定通行能力随机影响因素,以准确计算信号交叉口通行能力值,将随机因素分为特定地区和特定交叉口。基于平均饱和车头时距,提出了信号交叉口通行能力随机影响因素的判别方法;提出从影响程度和发生概率两方面考虑随机因素的选取,采用可拓理论选取信号交叉口通行能力随机影响因素。根据影响程度和发生概率,将随机影响因素对通行能力的影响分为低、中、高3级。采用中国北部和南部地区2个城市的25个交叉口实测数据,验证所提判别方法。研究结果表明:随机影响因素可以反映城市或者交叉口的典型特征;反映区域主导特性和特定交叉口特性的随机影响因素会显著影响信号交叉口通行能力;随机影响因素在一定时间内相对稳定,其对交叉口的影响水平达到中、高级时,建议考虑将该随机影响因素纳入通行能力计算模型中。In order to determine the random factors of traffic capacity, so as to calculate the sig- nalized intersection capacity accurately. The random factors were divided into regional-specific factors and intersection-specific factors. A discrimination method for modeling the random factors that influence signalized intersection capacity was proposed based on the average headway. The random factors were selected using the extension method based on their degrees of influence and the probabilities of occurrence. The influence level of random factors were divided to low, medi- um and high according to the degrees of influence and the probabilities of occurrence. Actual data from 25 intersections located in two cities located in the northern and southern regions of China were used to verify the discrimination method. The results show that the random factors can re- flect typical characteristics of the city or an intersection, which greatly influence signalized inter- section capacity, and they remain stable during a certain period. It is recommended that a random factor should be considered in the capacity calculation model at signalized intersections when its influence level is medium or high.

关 键 词：交通工程 随机影响因素 可拓理论 信号交叉口通行能力 判别方法 

分 类 号：U491.23[交通运输工程—交通运输规划与管理]