發(fā)布時(shí)間：2018-03-22 18:04

  本文選題：信號(hào)優(yōu)化　切入點(diǎn)：交通波理論　出處：《西南交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：城市道路交通干線是城市交通網(wǎng)絡(luò)的骨架,干線的暢通與否會(huì)直接影響到網(wǎng)絡(luò)整體的正常運(yùn)行。城市中心區(qū)域土地開發(fā)強(qiáng)度大,車流量超過道路網(wǎng)絡(luò)的通行能力,再加上中心城區(qū)行人過街等不確定因素的橫向干擾,導(dǎo)致干線信號(hào)協(xié)調(diào)方案失效,次干道和支路也無法有效的發(fā)揮出微循環(huán)的正常功效,帶來區(qū)域性交通擁堵。此時(shí),通過傳統(tǒng)地以均衡各個(gè)方向交通流為目標(biāo)的配時(shí)優(yōu)化和干線信號(hào)協(xié)調(diào)控制,已經(jīng)不適應(yīng)過飽和狀態(tài)下的交通管理對(duì)于緩堵控制需求。本文將在飽和或者過飽和交通狀態(tài)下,干線存在隨機(jī)不確定干擾因素的環(huán)境中,對(duì)城市中心區(qū)干道的信號(hào)優(yōu)化控制思路和方法進(jìn)行研究。 本文首先針對(duì)國內(nèi)外過飽和交通條件下,信號(hào)控制相關(guān)方面的研究進(jìn)行綜述分析。提出現(xiàn)有信號(hào)控制方法的優(yōu)劣,并且針對(duì)各個(gè)方法不完善的方面提出解決思路。 其次,以交叉口信號(hào)控制相關(guān)理論為基礎(chǔ),結(jié)合交叉口信號(hào)控制方案的優(yōu)化經(jīng)驗(yàn)做法,提出了本文對(duì)過飽和狀態(tài)下城市干線信號(hào)優(yōu)化的流程和方法。然后基于過飽和狀態(tài)下交通流特性的分析,提出改進(jìn)的信號(hào)交叉口排隊(duì)長度估算模型,并進(jìn)一步研究根據(jù)上下游信號(hào)相位相關(guān)性強(qiáng)弱確定信號(hào)配時(shí)的方法,最終完成城市中心區(qū)干線信號(hào)優(yōu)化控制方法策略。 最后,通過建立微觀交通仿真模型對(duì)本文提出的優(yōu)化方案進(jìn)行仿真驗(yàn)證。論文以PARAMICS軟件作為仿真平臺(tái),應(yīng)用其行人仿真模塊加載路段行人干擾,通過對(duì)軟件PLUGIN程序的開發(fā),去拓展模擬平臺(tái)中對(duì)信號(hào)燈的控制機(jī)理,從而對(duì)本文信號(hào)優(yōu)化控制方法進(jìn)行仿真實(shí)驗(yàn)評(píng)價(jià)。
[Abstract]:The urban road traffic trunk line is the skeleton of the urban traffic network. Whether the trunk line is smooth or not will directly affect the normal operation of the whole network. The development intensity of the land in the urban center area is great, and the traffic flow exceeds the traffic capacity of the road network. In addition, due to the lateral interference of uncertain factors such as pedestrian crossing in the central urban area, the coordination scheme of the trunk line signal will fail, and the secondary trunk roads and branches will not be able to effectively exert the normal function of microcirculation and bring about regional traffic jams. Through the traditional timing optimization with the goal of balancing traffic flow in various directions and the coordinated control of trunk signal, traffic management in supersaturated condition is not suitable for slow blocking control. In this paper, the traffic flow will be saturated or supersaturated. In the environment of random and uncertain interference factors in trunk roads, the optimal control method of trunk roads in urban center is studied. In this paper, firstly, the research on signal control is summarized and analyzed under the condition of oversaturated traffic at home and abroad. The advantages and disadvantages of existing signal control methods are put forward, and the solutions to these problems are put forward. Secondly, based on the related theory of intersection signal control, combined with the optimization experience of intersection signal control scheme, Based on the analysis of traffic flow characteristics under supersaturated condition, an improved queue length estimation model for signalized intersections is proposed. Furthermore, the method of determining signal timing according to the intensity of phase correlation between upstream and downstream signals is further studied, and the optimal control strategy of trunk line signal in urban center area is finally completed. Finally, the optimization scheme is verified by establishing microscopic traffic simulation model. In this paper, the PARAMICS software is used as the simulation platform, the pedestrian interference is loaded with the pedestrian simulation module, and the software PLUGIN program is developed. The control mechanism of the signal lamp in the simulation platform is expanded, and the simulation experiment evaluation of the signal optimization control method in this paper is carried out.
【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】：2014
【分類號(hào)】：U491.54

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