基于集对分析的城市道路交通安全性评价-《郑州大学学报(工学版)》

文章信息/Info

Author(s):: Zhang Shaonan; Qian Xiaodong; School of Transportation, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070

Keywords:: set pair analysis; traffic safety; safety evaluation; urban roadindex weight

摘要:: 传统评价方法对城市道路交通安全进行评价时,只能对其中所包含的部分不确定信息进行处理,而集对分析方法可以对不确定性因素引起的所有模糊性、不确定性信息做出统一的处理和描述,本文采用集对分析方法对城市道路交通安全作出评价.以城市道路交通系统为研究对象,首先,建立指标权重的集对分析模型,对影响城市道路交通安全因素的权重进行分析;其次,将所评价城市的各实测指标值组成一个集合,将城市道路评价标准所对应的指标值组成另外的一个集合,使这两个集合组成一个集对进行评价.由于评价标准等级不同,所以构成的集对有多个.通过计算这些集对联系度的大小,选出联系度最大的等级作为此城市道路交通安全等级的最终评价结果.通过实例分析验证该方法的可行性及现实价值.

Abstract:: The previous method in safety evaluation of urban traffic just proced part of the uncertain information,while the SPA (Set Pair Analysis) theory was able to process and describe all the fuzzification and indeterminacy caused by uncertain factors uniformly.This paper adopted SPA to evaluate the safety of urban traffic.Taking urban traffic system as the object,the evaluation was conducted in the following two aspects.Firstly,it was to build the SPA model of index weight and to analyze the weight of influential factors;Secondly,it was to group the actual targeted value and the standard targeted value into two sets,which were consequently formed as one set pair.Due to the different evaluation criteria,there might be several set pairs.By calculating the connection degrees of those set pairs,the grade with the highest connection degree would be chosen as the final evaluation result.The feasibility and actual value of this method were verified by instance analysis.