交通运输系统工程与信息
交通運輸繫統工程與信息
교통운수계통공정여신식
JOURNAL OF COMMUNICATION AND TRANSPORTATION SYSTEMS ENGINEERING AND INFORMATION
2014年
6期
86-91
,共6页
文江辉%江泽武%徐佳恒%张随远%毛树华
文江輝%江澤武%徐佳恆%張隨遠%毛樹華
문강휘%강택무%서가항%장수원%모수화
城市交通%改进沙漏模型%元胞自动机%突发事件%通行能力%排队长度
城市交通%改進沙漏模型%元胞自動機%突髮事件%通行能力%排隊長度
성시교통%개진사루모형%원포자동궤%돌발사건%통행능력%배대장도
urban traffic%optimized hourglass model%cellular automata%emergency%traffic capacity%length of queuing
通过分析突发事故导致车道被占用时,道路通行能力的演变过程及交通流的变化特征,将占道发生后车流与沙漏模型中颗粒物质运动类比,结合突发事件下交通流中不同类型车辆的换道规律,提出了含概率崩塌各异性的改进沙漏模型.并结合元胞自动机仿真理论,运用MATLAB进行仿真计算不同时刻的车辆排队长度,与实际数据对比,该模型的平均相对误差为6.5097%,验证了模型的可靠性.最后利用该模型预测不同车道被占用和不同车流量的情况下车队长度达到特定长度所需的时间,进而探讨其分别对道路通行能力的不同影响程度,为交通部门监管道路提供理论依据.
通過分析突髮事故導緻車道被佔用時,道路通行能力的縯變過程及交通流的變化特徵,將佔道髮生後車流與沙漏模型中顆粒物質運動類比,結閤突髮事件下交通流中不同類型車輛的換道規律,提齣瞭含概率崩塌各異性的改進沙漏模型.併結閤元胞自動機倣真理論,運用MATLAB進行倣真計算不同時刻的車輛排隊長度,與實際數據對比,該模型的平均相對誤差為6.5097%,驗證瞭模型的可靠性.最後利用該模型預測不同車道被佔用和不同車流量的情況下車隊長度達到特定長度所需的時間,進而探討其分彆對道路通行能力的不同影響程度,為交通部門鑑管道路提供理論依據.
통과분석돌발사고도치차도피점용시,도로통행능력적연변과정급교통류적변화특정,장점도발생후차류여사루모형중과립물질운동류비,결합돌발사건하교통류중불동류형차량적환도규률,제출료함개솔붕탑각이성적개진사루모형.병결합원포자동궤방진이론,운용MATLAB진행방진계산불동시각적차량배대장도,여실제수거대비,해모형적평균상대오차위6.5097%,험증료모형적가고성.최후이용해모형예측불동차도피점용화불동차류량적정황하차대장도체도특정장도소수적시간,진이탐토기분별대도로통행능력적불동영향정도,위교통부문감관도로제공이론의거.
From the analysis of the evolving of traffic flow when traffic congestion emerges caused by accident, analogies of traffic flow with the movement of particulate matter in hourglass model and various vehicles’lane changing pattern in emergency situation, an optimized hourglass model is propose. Based on cellular automata method, we simulate the queuing lengths of vehicles in different time on MATLAB and compare them with the practical data .We find that the average relative error of the model is 6.509 7%, verifying the reliability of the model. Finally, according to the model, we predict the time required for the specific queuing length on various lanes and traffic volumes. Thusly, we can study the impacts of time on traffic capacity and provide a theoretical basis for transportation administration.