本文選題：交通工程　切入點：信號控制　出處：《昆明理工大學》2017年碩士論文　論文類型：學位論文

【摘要】：在交通需求較小的情況下,環(huán)形交叉口可以使車輛連續(xù)順暢的通過,不僅消除了沖突點而且還提高了行車的安全性。但是近些年來,連續(xù)增長的交通流量使單純的無控制環(huán)形交叉口已經(jīng)不再適用。針對環(huán)形交叉口的左轉車流二次停車控制方法由同濟大學的楊曉光等提出,該方法不僅能擴大環(huán)形交叉口的容量瓶頸,使左轉車流能在環(huán)道空間上二次排隊停車,還能提高環(huán)形交叉口的通行能力,降低行車延誤。但是左轉二次控制方法一般采用對稱放行的兩相位信號控制,實際運用中環(huán)形交叉口的各個進口方向流量完全相同的概率較小。當對向兩個進口道方向流量存在差異性的情況時,仍使用對稱放行的控制方案,會使得同一相位中對向進口方向環(huán)形交叉口內部環(huán)道利用不均,進口道方向信號相位中的綠燈時間利用率不均。所以,需要在環(huán)形交叉口左轉二次控制的研究內容中,面向大型環(huán)形交叉口在對向存在流量差異情況下的信號控制進行深一步的研究。論文主要通過介紹現(xiàn)存針對于大型環(huán)形交叉口左轉二次信號控制中的對稱放行控制方案,并對其在現(xiàn)實對向存在流量差異性情況下存在著有效綠燈時間利用率不足和環(huán)道空間利用有效性缺失的問題進行了分析和總結。為了后續(xù)對比分析的方便,對常規(guī)的對稱放行左轉二次信號控制方案的具體適用條件,信號控制方案參數(shù)的具體標定過程進行了詳細敘述。論文的主要創(chuàng)新之處在于,根據(jù)對稱方向控制方案中對環(huán)道空間利用不足的情況,提出了一種利用剩余環(huán)道空間,提前放行高流量進口方向車流的控制方法。并詳細分析了該提前放行控制方案的控制策略的具體思路與優(yōu)化步驟。針對流量差異性在控制方案的實施過程中,對相關進口道的各個相位時間的總體狀況進行分析,對相應進口道流量進行修正。最后,結合常規(guī)的對稱放行左轉二次信號控制方案中的對應參數(shù)標定過程對提前放行控制方案中的環(huán)形交叉口的信號周期,左轉綠燈時間,第二停車線綠燈時間;各個相位中的綠燈時間,黃燈時間,全紅時間等相關參數(shù)進行分析和確定,完成了對相應的信號控制參數(shù)進行了最終模型標定和后續(xù)優(yōu)化,進而完成了整個提前放行控制方案的提出和確定過程。最后,通過建立優(yōu)化控制方案的評價體系。利用VISSIM仿真技術,針對曲靖市區(qū)現(xiàn)實存在的環(huán)形交叉口流量數(shù)據(jù)進行調查與合理預測。將提前放行控制方案與對稱放行控制方案進行對比,表明提前放行控制方案可以縮短信號周期。在不同流量差異性存在的情況下,按照兩種不同的信號控制方案分別進行仿真分析,經(jīng)過對稱控制放行控制方法和優(yōu)化控制方法兩種方案對實例交叉口的仿真結果比較分析,表明了優(yōu)化控制方案具有優(yōu)越性和適用性。
[Abstract]:In the case of low traffic demand, circular intersections can make vehicles flow smoothly, not only eliminate conflict points, but also improve the safety of traffic. But in recent years, With the continuous increase of traffic flow, the simple uncontrolled roundabout is no longer applicable. The second stop control method for the left turn flow at the circular intersection was put forward by Yang Xiaoguang and others of Tongji University. This method can not only enlarge the capacity bottleneck of the annular intersection, but also increase the capacity of the annular intersection. But the second control method of left turn is usually controlled by symmetrical two phase signal. In practical use, the probability of flow in each direction of the annular intersection is quite small. When there is a difference in the flow in the direction of two entry channels, the control scheme of symmetrical release is still used. In the same phase, the utilization of the inner loop in the inlet direction intersection is uneven, and the green light time utilization in the phase of the inlet direction signal is uneven. Therefore, it is necessary to study the secondary control of the left turn in the circular intersection. This paper mainly introduces the existing symmetrical release control scheme for the left turn secondary signal control of large circular intersection. This paper also analyzes and summarizes the problems of the lack of effective green light time utilization rate and the lack of efficiency of ring space utilization under the condition of traffic flow difference in reality. The specific conditions of the conventional symmetrical left turn secondary signal control scheme and the specific calibration process of the parameters of the signal control scheme are described in detail. The main innovation of this paper lies in the fact that, According to the underutilization of the loop space in the symmetrical direction control scheme, a new method of utilizing the residual loop space is proposed. The control method of the traffic flow in the direction of high flow inlet in advance is analyzed in detail. The detailed thinking and optimization steps of the control strategy of the control scheme are analyzed in detail. In view of the flow difference in the implementation process of the control scheme, The overall situation of each phase time of the relevant inlet channel is analyzed, and the flow rate of the relevant inlet channel is corrected. Finally, Combined with the corresponding parameter calibration process of the conventional symmetrical left turn secondary signal control scheme, the signal period, the left turn green time and the second stop line green time of the circular intersection in the early release control scheme are studied. The green time, yellow light time, all red time and other related parameters in each phase are analyzed and determined, and the final model calibration and subsequent optimization of the corresponding signal control parameters are completed. Finally, through the establishment of the evaluation system of the optimal control scheme and the use of VISSIM simulation technology, Based on the investigation and reasonable prediction of the actual flow data of circular intersection in Qujing city, this paper compares the advance release control scheme with the symmetrical release control scheme. The results show that the early release control scheme can shorten the signal cycle. Under the condition of different flow difference, the simulation analysis is carried out according to two different signal control schemes. The comparison and analysis of the simulation results between symmetric control release control method and optimal control method show that the optimal control scheme has advantages and applicability.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U491.54

【參考文獻】

相關期刊論文 前10條

1 成衛(wèi);別一鳴;劉志遠;;基于機動車延誤的Hook-turn交叉口信號控制方案優(yōu)化方法[J];中國公路學報;2015年03期

2 易葉青;羊四清;劉友繼;;多車道多車型下的環(huán)島進口道通行能力的數(shù)學模型[J];湖南人文科技學院學報;2009年04期

3 彭彼樂;馬萬經(jīng);;十字環(huán)形交叉口的非對稱信號控制[J];交通信息與安全;2009年01期

4 楊曉光;趙靖;汪濤;;環(huán)形交叉口信號控制最佳周期計算方法[J];中國公路學報;2008年06期

5 劉會斌;鄧衛(wèi);李東屹;;環(huán)形交叉口的信號控制方法研究[J];道路交通與安全;2008年02期

6 鄒博;石京;陸化普;袁健;;環(huán)島進入通行能力影響因素分析與模型改進研究[J];公路工程;2007年04期

7 馬瑩瑩;楊曉光;曾瀅;;十字環(huán)形交叉口綠燈間隔時間計算方法研究[J];公路交通科技;2007年07期

8 樊立軍;;環(huán)形平面交叉口設計理論的發(fā)展及其在我國的應用[J];民營科技;2007年03期

9 張旭e，

本文編號：1630689