【摘要】：交叉口作為城市交通網(wǎng)絡(luò)的關(guān)鍵節(jié)點(diǎn),是實(shí)現(xiàn)車(chē)輛和行人在不同路段間連續(xù)運(yùn)行的連接器。隨著城市機(jī)動(dòng)化出行率的不斷提高,人們逐漸認(rèn)識(shí)到對(duì)交叉口交通設(shè)計(jì)的重要性。信號(hào)相位方案設(shè)計(jì)作為信號(hào)交叉口交通設(shè)計(jì)的核心問(wèn)題,雖然已有部分相關(guān)研究,但仍然有所欠缺,本文在已有研究的基礎(chǔ)之上重點(diǎn)針對(duì)信號(hào)交叉口相位相序優(yōu)化設(shè)計(jì)展開(kāi)研究。本文從相位方案在信號(hào)控制中的重要性地位出發(fā),論證其優(yōu)化設(shè)計(jì)的必要性。通過(guò)對(duì)車(chē)輛在信號(hào)交叉口到達(dá)及離去特性圖的分析,闡述信號(hào)方案中相位相序問(wèn)題的本質(zhì)內(nèi)含,分析相位相序優(yōu)化設(shè)計(jì)的基本原則及其影響因素,并在此基礎(chǔ)之上提出相位方案設(shè)計(jì)流程；接著對(duì)不同相位中交通流的組合問(wèn)題和聚類(lèi)問(wèn)題的相似性進(jìn)行分析,將車(chē)輛在交叉口的到達(dá)和離去看作一個(gè)排隊(duì)等待服務(wù)的過(guò)程并從中提取對(duì)象特征屬性,建立基于聚類(lèi)思想的相位組合優(yōu)化模型,為相位優(yōu)化及最佳相位數(shù)目的確定提供科學(xué)理論依據(jù),相比傳統(tǒng)直觀(guān)的方法而言是一種精確、快捷實(shí)現(xiàn)相位組合優(yōu)化的方法；然后通過(guò)分析相序方案中的時(shí)空二維特征,確定相序方案設(shè)計(jì)中的關(guān)鍵問(wèn)題：相位次序優(yōu)化問(wèn)題和相位切換節(jié)點(diǎn)優(yōu)化問(wèn)題,分別建立基于損失時(shí)間最小的相位次序優(yōu)化模型和基于相位通行強(qiáng)度的相位切換控制策略；最后,為驗(yàn)證模型及控制策略的有效性,設(shè)計(jì)了四種不同信號(hào)控制方案并在VISSIM軟件中運(yùn)行仿真。仿真結(jié)果表明,經(jīng)過(guò)對(duì)原信號(hào)交叉口實(shí)施相位相序優(yōu)化后,其通行能力基本維持不變,但整體延誤卻降低35%左右且各相位延誤趨于均衡。
[Abstract]:As the key node of urban traffic network, intersection is the connector to realize the continuous operation of vehicles and pedestrians between different sections of road. With the increasing of urban motorized travel rate, people gradually realize the importance of traffic design at intersections. As the core problem of traffic design at signalized intersections, signal phase design has been studied in part, but it is still lacking. Based on the existing research, this paper focuses on the phase sequence optimization design of signalized intersections. Based on the importance of phase scheme in signal control, this paper demonstrates the necessity of its optimal design. Based on the analysis of the arrival and departure characteristic diagram of vehicles at signalized intersection, the essential content of phase sequence problem in signal scheme is expounded, and the basic principle of phase sequence optimization design and its influencing factors are analyzed. On the basis of this, the design flow of phase scheme is put forward. Then the similarity of traffic flow combination problem and clustering problem in different phases is analyzed. The arrival and departure of vehicles at intersection are regarded as a process of queuing and waiting for service and the characteristic attributes of objects are extracted from them. A phase combination optimization model based on clustering is established, which provides a scientific theoretical basis for phase optimization and the determination of the optimal number of phases. Compared with the traditional intuitive method, it is a precise and quick method to realize phase combination optimization. Then by analyzing the two dimensional characteristics of phase sequence scheme, the key problems in the design of phase sequence scheme are determined: phase sequence optimization problem and phase switching node optimization problem. The phase order optimization model based on minimum lost time and the phase switching control strategy based on phase passing intensity are established respectively. Finally, in order to verify the validity of the model and control strategy, four different signal control schemes are designed and simulated in VISSIM software. The simulation results show that after the phase sequence optimization of the original signalized intersection, the traffic capacity remains basically unchanged, but the overall delay is reduced by about 35% and each phase delay tends to equalize.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：U491.54

【引證文獻(xiàn)】

相關(guān)會(huì)議論文 前1條

1 高云峰;陳紅潔;;信號(hào)控制交叉口相位相序優(yōu)化研究[A];2007第三屆中國(guó)智能交通年會(huì)論文集[C];2007年

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本文編號(hào)：2425500