城市信號交叉口調(diào)頭選位方法研究
發(fā)布時間：2019-04-07 17:11
【摘要】：調(diào)頭組織作為保障城市路網(wǎng)交通運行順暢有序的重要手段得到了廣泛應(yīng)用,其一般包含路段調(diào)頭和交叉口集中調(diào)頭兩種形式。而隨著城市路網(wǎng)調(diào)頭需求的不斷增加,交叉口集中調(diào)頭由于其在交通流運行組織安全性方面的突出優(yōu)勢,已成為當(dāng)前城市路網(wǎng)中的主要應(yīng)用模式。由于我國目前的設(shè)計規(guī)范中還缺少交叉口調(diào)頭選位方面的規(guī)定,使得設(shè)計人員都是根據(jù)經(jīng)驗確定,這就導(dǎo)致進口道內(nèi)左轉(zhuǎn)車流和調(diào)頭車流之間的相互影響加劇,使得調(diào)頭組織的效益不能充分發(fā)揮,降低了交叉口的運行效率。為此,本文針對信號交叉口的調(diào)頭需求,以通行效率最優(yōu)為目標(biāo)研究了交叉口的調(diào)頭選位計算方法。文章的主要研究內(nèi)容包含以下幾個部分:首先,研究了信號交叉口調(diào)頭需求及組織方法。分析了交叉口調(diào)頭需求的形成及車流運行特征,并總結(jié)了當(dāng)前常用的幾種交叉口調(diào)頭組織形式和調(diào)頭信號控制方法,在對比分析的基礎(chǔ)上確定了本文的研究對象。其次,研究了單左轉(zhuǎn)車道交叉口調(diào)頭選位。通過建立左轉(zhuǎn)與調(diào)頭共用車道的損失時間模型,揭示了不同交通條件下左轉(zhuǎn)與調(diào)頭共用車道上左轉(zhuǎn)車流與調(diào)頭車流之間的相互影響機理,并在此基礎(chǔ)上結(jié)合交叉口車輛到達率及不同流向車輛的概率分布函數(shù),構(gòu)建了單左轉(zhuǎn)信號交叉口左轉(zhuǎn)與調(diào)頭共用車道的通行能力計算模型,并以通行能力最優(yōu)為目標(biāo)確定了單左轉(zhuǎn)車道交叉口調(diào)頭選位方法。然后,研究了雙左轉(zhuǎn)車道交叉口調(diào)頭選位。根據(jù)交通流的啟動波模型,分別建立了雙左轉(zhuǎn)車道交叉口左轉(zhuǎn)專用車道和左轉(zhuǎn)與調(diào)頭共用車道的預(yù)期通行時間計算模型,并結(jié)合Wardrop原理中的用戶平衡思想,建立了調(diào)頭車流影響下的雙左轉(zhuǎn)車道交叉口左轉(zhuǎn)車輛選道模型,在此基礎(chǔ)上構(gòu)建了信號交叉口的雙左轉(zhuǎn)車道綜合通行能力計算模型,并以綜合通行能力最優(yōu)為目標(biāo)確定了雙左轉(zhuǎn)車道交叉口調(diào)頭選位方法。最后,進行了實例分析及仿真驗證。分別選取了淄博市中心城區(qū)設(shè)置調(diào)頭開口的典型單左轉(zhuǎn)車道交叉口和雙左轉(zhuǎn)車道交叉口進行交通調(diào)查,并利用本文研究得出的計算方法,求解相應(yīng)交叉口的調(diào)頭開口最佳位置,結(jié)果表明:對于所選單左轉(zhuǎn)車道交叉口,該方法能夠使左轉(zhuǎn)與調(diào)頭共用車道通行能力由432pcu/h提升到509pcu/h,提高了17.82%;對于所選雙左轉(zhuǎn)車道交叉口,該方法能夠使雙左轉(zhuǎn)車道的綜合通行能力由643pcu/h提升到691pcu/h,提高了6.95%。然后,運用VISSIM仿真軟件分別建立了兩個交叉口的仿真模型對文中所述計算方法進行仿真驗證,最終仿真運行結(jié)果同模型計算結(jié)果基本一致。
[Abstract]:As an important means to ensure the smooth and orderly traffic operation of urban road network, turn-around organization has been widely used, which generally includes two forms: road section turn-off and intersection centralized turn-off. With the increasing demand for urban road network turn-around, intersection centralized turn-around has become the main application mode of urban road network because of its outstanding advantages in traffic flow operation organization safety. Due to the lack of the provisions in the current design code of our country, the designers are determined on the basis of experience, which leads to the aggravation of the interaction between the left-turn traffic flow and the turn-around traffic flow in the entrance road, which leads to the increase of the interaction between the left-turn traffic flow and the turn-around traffic flow. The efficiency of the turn-around organization can not be brought into full play and the operation efficiency of the intersection is reduced. Therefore, aiming at the turn-off demand of signalized intersections, this paper studies the calculation method of turn-off selection for intersection with the goal of optimal traffic efficiency. The main contents of this paper include the following parts: firstly, the switching requirements and organization methods of signalized intersections are studied. This paper analyzes the formation of turn-off demand at intersection and the operation characteristics of traffic flow, summarizes several common organization forms and signal control methods of turn-off at present, and determines the research object of this paper on the basis of comparative analysis. Secondly, the turn-around selection of single left-turn lane intersection is studied. By establishing the loss time model of left-turn and turn-turn shared lane, the interaction mechanism between left-turn and turn-over traffic flow on the shared lane of left turn and turn-turn shared lane under different traffic conditions is revealed. On this basis, combined with the vehicle arrival rate at intersection and the probability distribution function of different flow direction, the capacity calculation model of left-turn and turn-around common lane at single left-turn signalized intersection is established. Based on the optimal traffic capacity, a single left turn lane intersection selection method is proposed. Then, the double left-turn lane intersection turn-around position selection is studied. According to the start-up wave model of traffic flow, the calculation models of the expected traffic time for the left-turn special lane and the left-turn and turn-turn common lane at the double-left lane intersection are established respectively, and combined with the user balance thought in the Wardrop principle. Based on the model of left-turn vehicle selection under the influence of turning-around traffic flow, the comprehensive capacity calculation model of double-left-turn lane at signalized intersection is constructed. In order to optimize the integrated traffic capacity, the double left turn lane intersection is selected to select the turn-around position. Finally, an example analysis and simulation verification are carried out. The typical single left-turn lane intersection and double left-turn lane intersection with turn-around opening in the city center of Zibo are selected for traffic investigation, and the calculation method obtained in this paper is used to solve the optimal position of turn-around opening at the corresponding intersection. The results show that for the selected left-turn lane intersection, the traffic capacity of the left-turn and turn-around shared lane can be increased from 432pcu/h to 509pcuh, which can be increased by 17.82%. For the selected left-turn lane intersection, the combined traffic capacity of the double-left lane can be increased from 643pcu/h to 691pcuh, with an increase of 6.95%. Then, the VISSIM simulation software is used to establish the simulation models of the two intersections, and the simulation results are basically consistent with the results of the model calculation.
【學(xué)位授予單位】：山東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U491.23
本文編號：2454256
[Abstract]:As an important means to ensure the smooth and orderly traffic operation of urban road network, turn-around organization has been widely used, which generally includes two forms: road section turn-off and intersection centralized turn-off. With the increasing demand for urban road network turn-around, intersection centralized turn-around has become the main application mode of urban road network because of its outstanding advantages in traffic flow operation organization safety. Due to the lack of the provisions in the current design code of our country, the designers are determined on the basis of experience, which leads to the aggravation of the interaction between the left-turn traffic flow and the turn-around traffic flow in the entrance road, which leads to the increase of the interaction between the left-turn traffic flow and the turn-around traffic flow. The efficiency of the turn-around organization can not be brought into full play and the operation efficiency of the intersection is reduced. Therefore, aiming at the turn-off demand of signalized intersections, this paper studies the calculation method of turn-off selection for intersection with the goal of optimal traffic efficiency. The main contents of this paper include the following parts: firstly, the switching requirements and organization methods of signalized intersections are studied. This paper analyzes the formation of turn-off demand at intersection and the operation characteristics of traffic flow, summarizes several common organization forms and signal control methods of turn-off at present, and determines the research object of this paper on the basis of comparative analysis. Secondly, the turn-around selection of single left-turn lane intersection is studied. By establishing the loss time model of left-turn and turn-turn shared lane, the interaction mechanism between left-turn and turn-over traffic flow on the shared lane of left turn and turn-turn shared lane under different traffic conditions is revealed. On this basis, combined with the vehicle arrival rate at intersection and the probability distribution function of different flow direction, the capacity calculation model of left-turn and turn-around common lane at single left-turn signalized intersection is established. Based on the optimal traffic capacity, a single left turn lane intersection selection method is proposed. Then, the double left-turn lane intersection turn-around position selection is studied. According to the start-up wave model of traffic flow, the calculation models of the expected traffic time for the left-turn special lane and the left-turn and turn-turn common lane at the double-left lane intersection are established respectively, and combined with the user balance thought in the Wardrop principle. Based on the model of left-turn vehicle selection under the influence of turning-around traffic flow, the comprehensive capacity calculation model of double-left-turn lane at signalized intersection is constructed. In order to optimize the integrated traffic capacity, the double left turn lane intersection is selected to select the turn-around position. Finally, an example analysis and simulation verification are carried out. The typical single left-turn lane intersection and double left-turn lane intersection with turn-around opening in the city center of Zibo are selected for traffic investigation, and the calculation method obtained in this paper is used to solve the optimal position of turn-around opening at the corresponding intersection. The results show that for the selected left-turn lane intersection, the traffic capacity of the left-turn and turn-around shared lane can be increased from 432pcu/h to 509pcuh, which can be increased by 17.82%. For the selected left-turn lane intersection, the combined traffic capacity of the double-left lane can be increased from 643pcu/h to 691pcuh, with an increase of 6.95%. Then, the VISSIM simulation software is used to establish the simulation models of the two intersections, and the simulation results are basically consistent with the results of the model calculation.
【學(xué)位授予單位】：山東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U491.23
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