【摘要】：信號(hào)交叉口是城市道路網(wǎng)中的重要節(jié)點(diǎn),是各類(lèi)交通流匯集、轉(zhuǎn)向和通過(guò)的必經(jīng)之地。隨著城市的快速發(fā)展和車(chē)輛保有量的增大,加之道路渠化和信號(hào)配時(shí)不盡合理,使信號(hào)交叉口經(jīng)常發(fā)生交通擁擠、堵塞或交通事故,交通高峰時(shí)段更甚,不僅降低了交叉口的通行能力,同時(shí)加劇了環(huán)境污染及能源的消耗。因此,為解決城市信號(hào)交叉口具體交通問(wèn)題,對(duì)其進(jìn)行科學(xué)、合理的優(yōu)化研究迫在眉睫。首先,本文從我國(guó)混合交通流的特點(diǎn)出發(fā),通過(guò)對(duì)交叉口混合交通流沖突的分析,提出了時(shí)間分離、空間分離兩種方法,以減少?zèng)_突點(diǎn);以交通組織為基礎(chǔ),分析研究了渠化交通的作用、設(shè)計(jì)流程以及信號(hào)配時(shí)的兩種計(jì)算方法,為信號(hào)交叉口的優(yōu)化提供理論依據(jù)。其次,本文以西安市太乙路-友誼東路信號(hào)交叉口為具體實(shí)例,對(duì)現(xiàn)場(chǎng)道路幾何條件、交叉口信號(hào)相位及配時(shí)方案和交通流量進(jìn)行了調(diào)查;從道路渠化、信號(hào)控制、交通流沖突等方面分析了該交叉口存在的交通問(wèn)題,針對(duì)這些問(wèn)題,分別提出了渠化交通優(yōu)化方案和信號(hào)控制優(yōu)化方案,并將其結(jié)合起來(lái),根據(jù)不同的信號(hào)配時(shí),提出了兩種交通組織優(yōu)化方案。最后,本文使用常用的交通仿真軟件VISSIM(Vision Traffic Simulation),對(duì)該信號(hào)交叉口的現(xiàn)有交通組織方案及兩種優(yōu)化方案進(jìn)行模型建立以及仿真運(yùn)行,并使用三大類(lèi)四種評(píng)價(jià)指標(biāo)(排隊(duì)時(shí)間、行程時(shí)間、延誤、排隊(duì)長(zhǎng)度)對(duì)各方案進(jìn)行評(píng)價(jià),以表格形式表示出了各方案的評(píng)價(jià)指標(biāo)的數(shù)值,以圖形形式直觀地給出各方案的評(píng)價(jià)結(jié)果,通過(guò)對(duì)比分析,選取出最佳交通組織優(yōu)化方案,有效地改善該信號(hào)交叉口的交通現(xiàn)狀。
[Abstract]:The signalized intersection is an important node in the urban road network. It is the necessary place for all kinds of traffic flow to converge, turn and pass through. With the rapid development of the city and the increase of the number of vehicles, the traffic congestion, congestion or traffic accidents often occur at signalized intersections, especially during rush hours. It not only reduces the capacity of intersection, but also intensifies environmental pollution and energy consumption. Therefore, in order to solve the specific traffic problems of urban signalized intersections, it is urgent to study them scientifically and rationally. Firstly, according to the characteristics of the mixed traffic flow in China, this paper analyzes the conflict of the mixed traffic flow at the intersection, and puts forward two methods: time separation and space separation to reduce the conflict point. On the basis of traffic organization, this paper analyzes and studies the function of channelized traffic, the design process and two calculation methods of signal timing, which provides theoretical basis for the optimization of signalized intersections. Secondly, taking the signal intersection of Taiyi Road and East Friendship Road in Xi'an as a concrete example, this paper investigates the road geometric condition, the signal phase, the timing scheme and the traffic flow of the intersection. The traffic problems at the intersection are analyzed from the aspects of road channelization, signal control, traffic flow conflict and so on. Aiming at these problems, the traffic optimization scheme and signal control optimization scheme are put forward and combined. According to different signal timing, two traffic organization optimization schemes are proposed. Finally, the traffic simulation software VISSIM (Vision Traffic Simulation), is used to model and simulate the existing traffic organization and two optimization schemes of the signalized intersection, and three kinds of four evaluation indexes (queue time) are used. Travel time, delay, queue length) to evaluate each scheme, to express the evaluation index value of each scheme in the form of table, to give the evaluation results of each scheme intuitively in the form of graph, and to compare and analyze the results of each scheme. The optimal traffic organization optimization scheme is selected to effectively improve the traffic situation at the signalized intersection.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：U491

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

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本文編號(hào)：2321538