本文關(guān)鍵詞：信號控制交叉口可變導(dǎo)向車道的研究　出處：《大連理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 可變導(dǎo)向車道 車道功能 信號配時 效率 安全

【摘要】：隨著社會經(jīng)濟水平的迅速發(fā)展和居民機動車保有量的不斷提高,交通擁堵逐漸成為了城市所面臨的一大難題,尤其是對大城市而言。城市的不斷發(fā)展使得城市各個部分承擔(dān)著不同的城市功能,這使得城市交通流在道路網(wǎng)上的分布呈現(xiàn)出一定的時間和空間差異性。為了適應(yīng)交叉口內(nèi)隨著時間不斷變化的交通流,提出了可變導(dǎo)向車道的概念,它允許對車道功能進行優(yōu)化協(xié)調(diào)以充分利用交叉口內(nèi)的空間資源。本文構(gòu)建可變導(dǎo)向車道功能與信號配時協(xié)同優(yōu)化模型,對交叉口的時空資源進行優(yōu)化分配,研究可變導(dǎo)向車道對交叉口的運行效率和安全的影響。本文首先通過對優(yōu)化模型的目標(biāo)函數(shù)和約束條件的確定,構(gòu)建可變導(dǎo)向車道功能與信號配時協(xié)同優(yōu)化模型,分別對三相位控制和雙環(huán)相位控制下單進口道可變導(dǎo)向車道以及雙進口道可變導(dǎo)向車道的設(shè)置情況進行研究分析,根據(jù)不同的相位控制結(jié)構(gòu)對信號相位約束條件進行了模型調(diào)整。利用優(yōu)化模型對處于不同情境、不同交通流量條件下的交叉口進行優(yōu)化協(xié)調(diào),根據(jù)結(jié)果分析得出可變導(dǎo)向車道對于交叉口的運行效率的影響程度。并且對不同的交叉口參數(shù)的變化對于可變導(dǎo)向車道的影響進行研究,如飽和度、相位順序等,給可變導(dǎo)向車道的應(yīng)用提出了指導(dǎo)性意見。最后,根據(jù)交通沖突技術(shù)和替代安全度量方法(Surrogate Safety Measure, SSM)的思想來進行交叉口的安全評價,利用基于微觀仿真的替代安全評價模型(Surrogate Safety Assessment Measure, SSAM)對可變導(dǎo)向車道設(shè)置前后交叉口的安全性進行對比分析,驗證可變導(dǎo)向車道對于交叉口安全性的影響。研究結(jié)果表明,可變導(dǎo)向車道的設(shè)置能夠有效地空間上分配交叉口的通行資源,降低交叉口的車均延誤,提高交叉口的運行效率和服務(wù)水平。同時,在左轉(zhuǎn)流量較小時,設(shè)置可變導(dǎo)向車道前后的交叉口安全性差別較小,但當(dāng)左轉(zhuǎn)流量增大時,可變導(dǎo)向車道的設(shè)置能夠降低交通事故發(fā)生的可能性和嚴(yán)重程度,顯著地改善交叉口的安全性。
[Abstract]:With the rapid development of social and economic level and the continuous improvement of the number of motor vehicles, traffic congestion has gradually become a major problem facing the city. Especially for big cities, the continuous development of cities makes each part of the city bear different urban functions. This makes the distribution of urban traffic flow in the road network presents a certain difference between time and space. In order to adapt to the traffic flow in intersection which changes with time, the concept of variable steering lane is put forward. It allows the optimization and coordination of lane functions to make full use of space resources in intersection. This paper constructs a cooperative optimization model of variable steering lane function and signal timing to optimize the allocation of space-time resources of intersection. This paper studies the effect of variable steering lane on the operation efficiency and safety of intersection. Firstly, this paper determines the objective function and constraint conditions of the optimization model. The cooperative optimization model of variable steering lane function and signal timing is constructed. The setting of three-phase position control and two-ring phase control are studied and analyzed respectively. The signal phase constraints are adjusted according to different phase control structures. The optimal model is used to optimize and coordinate the intersections in different situations and different traffic flow conditions. According to the analysis of the results, the influence degree of the variable steering lane on the operation efficiency of the intersection is obtained, and the influence of different intersection parameters on the variable steering lane is studied, such as saturation. Phase sequence and so on, give the application of the variable steering lane guidance advice. Finally. According to the idea of surrogate Safety measure (SSM), the traffic conflict technology and alternative safety measurement method are used to evaluate the safety of intersection. Surrogate Safety Assessment Measure is used as an alternative security evaluation model based on micro simulation. SSAM) compares and analyzes the safety of the intersection before and after the setting of the variable steering lane, and verifies the influence of the variable steering lane on the safety of the intersection. The setting of the variable steering lane can effectively distribute the traffic resources of the intersection in space, reduce the vehicle delay at the intersection, improve the operation efficiency and service level of the intersection, and at the same time, the flow of the left turn is small. The safety difference of the intersection before and after the setting of the variable steering lane is small, but when the left turn flow increases, the setting of the variable steering lane can reduce the possibility and severity of the traffic accident. Significantly improve the safety of intersections.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U491.23

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相關(guān)期刊論文 前1條

1 孫強;;動態(tài)可變車道優(yōu)化算法研究[J];公路;2009年08期

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本文編號：1441662