现代有轨电车信号优先控制方法研究
发布时间：2018-08-04 11:00
【摘要】：随着我国社会经济的发展,小汽车的保有量持续增高,而我国城市道路资源有限,这就造成了交通日益拥堵的问题,同时也带来了环境污染和资源消耗的问题,大力发展城市公共交通能够有效地缓解交通的拥堵。现代有轨电车因为有着较低的能耗和排放、较大的运能储备、较快的运行速度、较强的地形适应性、较少的投资成本等优点越来越被重视。我国已经有许多城市已经开通运营现代有轨电车,更多的城市将要开通运营现代有轨电车。交叉口是解决交通拥挤问题的瓶颈,在确保交叉口整体效益的同时如何实现现代有轨电车的优先通行是一个值得深入研究的问题。本文运用系统分析法分析了信号交叉口时间优先控制策略的三大类型,着重分析了主动优先控制下的相对优先控制策略主要的三大措施,给出了各个措施的示意图和逻辑流程图。借鉴韦伯斯特图解法的思想定量研究了延长有轨电车通行相位绿灯时间和提前开始有轨电车通行相位绿灯时间后,交叉口优先相位减少的延误和非优先相位增加的延误,从而得出实施优先控制后交叉口整体延误变化量。根据交叉口延误变化量给出本文信号优先控制流程;基于车均延误建立了信号优先时长优化模型,不再给定信号优先时长的值;基于人均延误建立了信号交叉口周期时长优化模型并给出了现代有轨电车黄灯时间和绿灯间隔时间计算公式。对当前周期实施完优先控制后可在后续周期对非优先相位进行相应的绿灯时间补偿。根据文中建立的信号配时参数优化模型计算各个参数,利用微观仿真软件VISSIM中的VisVAP模块编写程序,在多个饱和度下进行仿真验证。对比分析了定时控制方法和传统的绝对优先控制方法以及本文所提出的信号优先控制方法的仿真结果,结果表明本文提出的优先控制方法可在有效降低交叉口延误的同时充分给予现代有轨电车优先通行权。
[Abstract]:With the development of our society and economy, the number of cars keeps increasing, and the urban road resources are limited in our country, which has caused the traffic jam day by day, at the same time has brought the environmental pollution and the resource consumption problem. Vigorously developing urban public transport can effectively alleviate traffic congestion. Modern trams are paid more and more attention because of their advantages such as low energy consumption and emission, large storage capacity, fast running speed, strong terrain adaptability and less investment cost. Many cities in China have opened modern trams and more cities will open modern trams. Intersection is the bottleneck to solve the problem of traffic congestion. How to realize the priority traffic of modern tram while ensuring the overall benefit of intersection is a problem worthy of further study. In this paper, three major types of time-first control strategies for signalized intersections are analyzed by means of system analysis, and three main measures of relative priority control strategies under active priority control are emphatically analyzed. The schematic diagram and logic flow chart of each measure are given. Using the idea of Webster graphic method for reference, this paper quantitatively studies the delay of priority phase reduction and the increase of non-priority phase at intersection after extending the tram phase green time and starting the tram phase green time in advance. Thus, the change of overall delay of intersection after priority control is obtained. According to the variation of intersection delay, the signal priority control flow is given, the signal priority time optimization model is established based on vehicle delay, and the value of signal priority time is no longer given. Based on the per capita delay, the optimal model of cycle time at signalized intersection is established, and the calculation formulas of yellow light time and green light interval time of modern tram are given. After the priority control is implemented in the current cycle, the green light time can be compensated for the non-priority phase in the subsequent cycle. According to the signal timing parameter optimization model established in this paper, the parameters are calculated, and the program is compiled by VisVAP module in VISSIM, and the simulation is carried out under multiple saturation. The simulation results of the timing control method, the traditional absolute priority control method and the signal priority control method proposed in this paper are compared and analyzed. The results show that the priority control method proposed in this paper can effectively reduce the intersection delay and give priority to the modern tram at the same time.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.54
[Abstract]:With the development of our society and economy, the number of cars keeps increasing, and the urban road resources are limited in our country, which has caused the traffic jam day by day, at the same time has brought the environmental pollution and the resource consumption problem. Vigorously developing urban public transport can effectively alleviate traffic congestion. Modern trams are paid more and more attention because of their advantages such as low energy consumption and emission, large storage capacity, fast running speed, strong terrain adaptability and less investment cost. Many cities in China have opened modern trams and more cities will open modern trams. Intersection is the bottleneck to solve the problem of traffic congestion. How to realize the priority traffic of modern tram while ensuring the overall benefit of intersection is a problem worthy of further study. In this paper, three major types of time-first control strategies for signalized intersections are analyzed by means of system analysis, and three main measures of relative priority control strategies under active priority control are emphatically analyzed. The schematic diagram and logic flow chart of each measure are given. Using the idea of Webster graphic method for reference, this paper quantitatively studies the delay of priority phase reduction and the increase of non-priority phase at intersection after extending the tram phase green time and starting the tram phase green time in advance. Thus, the change of overall delay of intersection after priority control is obtained. According to the variation of intersection delay, the signal priority control flow is given, the signal priority time optimization model is established based on vehicle delay, and the value of signal priority time is no longer given. Based on the per capita delay, the optimal model of cycle time at signalized intersection is established, and the calculation formulas of yellow light time and green light interval time of modern tram are given. After the priority control is implemented in the current cycle, the green light time can be compensated for the non-priority phase in the subsequent cycle. According to the signal timing parameter optimization model established in this paper, the parameters are calculated, and the program is compiled by VisVAP module in VISSIM, and the simulation is carried out under multiple saturation. The simulation results of the timing control method, the traditional absolute priority control method and the signal priority control method proposed in this paper are compared and analyzed. The results show that the priority control method proposed in this paper can effectively reduce the intersection delay and give priority to the modern tram at the same time.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.54
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