基于多相位變相序的單交叉口信號配時優(yōu)化研究
發(fā)布時間：2019-07-09 08:34
【摘要】：隨著我國經(jīng)濟(jì)的飛速發(fā)展以及城鎮(zhèn)化和汽車普及進(jìn)程的加快，各種規(guī)模城市的交通擁堵現(xiàn)象不斷加劇，由此產(chǎn)生的環(huán)境污染和交通事故頻發(fā)等問題嚴(yán)重影響了公眾出行服務(wù)水平，甚至危及到人民的生命財產(chǎn)安全。這使得城市交通問題成為復(fù)雜而棘手的社會問題。單交叉口是構(gòu)成城市交通網(wǎng)絡(luò)的重要節(jié)點，單交叉口信號配時是交通控制的關(guān)鍵因素。本論文提出多相位可變相序基礎(chǔ)上的信號配時優(yōu)化方法，以減少交通沖突，確保居民出行安全，減少車輛對環(huán)境的危害，有效預(yù)防交通擁堵并提高交叉口車輛通行率。 首先，根據(jù)交叉口信號控制理論，確定交通信號的控制方式及參數(shù)，并對單交叉口各交通流間的關(guān)系、信號組間關(guān)系進(jìn)行定義。 其次，根據(jù)交叉口相位相序設(shè)計的影響因素及設(shè)計原則，，對單交叉口相位相序進(jìn)行設(shè)計。根據(jù)交叉口的各進(jìn)口道交通流量是否均衡，把相位的設(shè)計分為帶搭接車流和不帶搭接車流的多相位設(shè)計。針對兩種不同類型的車流模型，在考慮相位數(shù)、相位組合、初始相序安排的情況下，建立基于損失時間最少的相序優(yōu)化模型，并利用遺傳算法對相序優(yōu)化模型求解。 再次，在單交叉口信號配時優(yōu)化研究中，以幾種典型的信號配時方法為基礎(chǔ)，建立了以總延誤最小，通行能力最大和停車次數(shù)最少為目標(biāo)的單交叉口信號配時優(yōu)化模型，并利用拉格朗日乘數(shù)法對模型求解。同時提出了一種可變相序的多相位感應(yīng)信號配時優(yōu)化方法，并提出算法的具體步驟。 最后，以北京市石景山區(qū)晉元莊路與楊莊東街丁字交叉口為例，對其進(jìn)行信號配時設(shè)計，通過多相位變相序的配時優(yōu)化，提高了交叉口的通行能力，減少了車輛的總延誤及停車次數(shù)。
文內(nèi)圖片：
圖片說明：十字交叉口示意圖
[Abstract]:With the rapid development of economy and the acceleration of urbanization and automobile popularization in China, the traffic congestion in cities of all sizes is becoming more and more serious. The resulting environmental pollution and frequent traffic accidents have seriously affected the level of public travel service, and even endangered the safety of people's lives and property. This makes the urban traffic problem become a complex and thorny social problem. Single intersection is an important node of urban traffic network, and signal timing of single intersection is the key factor of traffic control. In this paper, a signal timing optimization method based on multi-phase variable phase sequence is proposed to reduce traffic conflict, ensure residents' travel safety, reduce the harm of vehicles to the environment, effectively prevent traffic congestion and improve the traffic rate at intersections. Firstly, according to the signal control theory of intersection, the control mode and parameters of traffic signal are determined, and the relationship between traffic flow and signal group at a single intersection is defined. Secondly, according to the influencing factors and design principles of intersection phase sequence design, the phase sequence of single intersection is designed. According to whether the traffic flow of each entrance road at the intersection is balanced or not, the phase design is divided into multi-phase design with and without lap traffic flow. For two different types of traffic flow models, the phase sequence optimization model based on the least loss time is established under the consideration of phase number, phase combination and initial phase sequence arrangement, and the phase sequence optimization model is solved by genetic algorithm. Thirdly, in the research of signal timing optimization of single intersection, based on several typical signal timing methods, a signal timing optimization model of single intersection with the goal of minimum total delay, maximum traffic capacity and minimum parking times is established, and the Lagrangian multiplier method is used to solve the model. At the same time, a multi-phase induction signal timing optimization method with variable phase sequence is proposed, and the concrete steps of the algorithm are put forward. Finally, taking the intersection of Jinyuanzhuang Road and Yangzhuang East Street in Shijingshan District of Beijing as an example, the signal timing design is carried out. through the optimization of multi-phase sequence timing, the traffic capacity of the intersection is improved and the total delay and parking times of the vehicle are reduced.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U491.54
本文編號：2512024
文內(nèi)圖片：
圖片說明：十字交叉口示意圖
[Abstract]:With the rapid development of economy and the acceleration of urbanization and automobile popularization in China, the traffic congestion in cities of all sizes is becoming more and more serious. The resulting environmental pollution and frequent traffic accidents have seriously affected the level of public travel service, and even endangered the safety of people's lives and property. This makes the urban traffic problem become a complex and thorny social problem. Single intersection is an important node of urban traffic network, and signal timing of single intersection is the key factor of traffic control. In this paper, a signal timing optimization method based on multi-phase variable phase sequence is proposed to reduce traffic conflict, ensure residents' travel safety, reduce the harm of vehicles to the environment, effectively prevent traffic congestion and improve the traffic rate at intersections. Firstly, according to the signal control theory of intersection, the control mode and parameters of traffic signal are determined, and the relationship between traffic flow and signal group at a single intersection is defined. Secondly, according to the influencing factors and design principles of intersection phase sequence design, the phase sequence of single intersection is designed. According to whether the traffic flow of each entrance road at the intersection is balanced or not, the phase design is divided into multi-phase design with and without lap traffic flow. For two different types of traffic flow models, the phase sequence optimization model based on the least loss time is established under the consideration of phase number, phase combination and initial phase sequence arrangement, and the phase sequence optimization model is solved by genetic algorithm. Thirdly, in the research of signal timing optimization of single intersection, based on several typical signal timing methods, a signal timing optimization model of single intersection with the goal of minimum total delay, maximum traffic capacity and minimum parking times is established, and the Lagrangian multiplier method is used to solve the model. At the same time, a multi-phase induction signal timing optimization method with variable phase sequence is proposed, and the concrete steps of the algorithm are put forward. Finally, taking the intersection of Jinyuanzhuang Road and Yangzhuang East Street in Shijingshan District of Beijing as an example, the signal timing design is carried out. through the optimization of multi-phase sequence timing, the traffic capacity of the intersection is improved and the total delay and parking times of the vehicle are reduced.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U491.54
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