快速路交通流状态突变边界提取及其演化规律  

Extraction of Catastrophe Boundary and Evolution of Expressway Traffic Flow State

作　　者：刘浩敏 曲大义 宋慧 孟奕名 LIU Haomin;QU Dayi;SONG Hui;MENG Yiming(School Of Mechanical&Automotive Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学机械与汽车工程学院,山东青岛266525

出　　处：《复杂系统与复杂性科学》2023年第3期74-81,共8页Complex Systems and Complexity Science

基　　金：国家自然科学基金(52272311,51678320)。

摘　　要：为解决快速路日益严重的拥堵现象,探讨其交通运行状态及演化规律,确定交通状态判别标准。运用交通仿真平台Vissim软件进行模拟分析,应用谱聚类分析算法精确提取交通状态突变边界,结合尖点突变理论,研究分析不同时间、位置的交通流状态。结果表明:交通流在自由流与拥堵流两种状态之间相互转化时,存在明显的突变现象。In order to solve the increasingly serious congestion of expressways,the traffic operation state and its evolution law are discussed,and the traffic state discrimination standard is determined.The traffic simulation platform VISSIM software is used for simulation analysis,and the spectral clustering analysis algorithm is used to accurately extract the abrupt boundary of traffic state.Combined with the cusp catastrophe theory,the traffic flow state at different times and locations is studied and analyzed.The results show that there is an obvious catastrophe phenomenon when the traffic flow transforms between the two states of free flow and congestion flow.

关 键 词：交通流状态 尖点突变理论 谱聚类分析算法 交通演化规律 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]