基于排队最远点约束的最大周期时长优化方法

发布时间：2018-06-18 21:29

本文选题：交通拥堵 + 交通波　；参考：《华南理工大学学报(自然科学版)》2014年05期

【摘要】：为充分考虑排队最远点对上游节点的影响,尽量避免短连线路段发生排队溢流现象,利用交通波理论分析了进口道排队长度的演化规律,推导了饱和状态持续时段内排队最远点相对停车线位置距离的计算方法,并以交叉口关键相位关键车道排队最远点最近为优化目标,建立了一种最大周期时长的优化模型.然后,设计了8种不同交通需求的测试环境,运用文中方法和现有方法分别计算了最大周期的最优值,根据等饱和度原则确定了两种方法下的信号配时方案,并利用VISSIM仿真获取了不同测试环境下两种方法的运行效率指标.结果表明:8种测试环境中,相对于现有方法,文中方法下关键相位关键车道的平均排队长度、排队最远点相对停车线位置的距离和车均停车次数分别降低了10.67%、11.36%和11.01%,上下游交叉口总的车均延误和停车次数分别降低了3.86%和3.81%,通过车辆数和平均车速分别提高了1.19%和3.58%.
[Abstract]:In order to fully consider the influence of the longest queue on the upstream nodes, avoid the queuing overflow in the short link, analyze the evolution law of the queue length of the inlet channel by the traffic wave theory, and deduce the calculation method of the distance from the distance of the longest queue in the continuous period of saturation state, and the key phase of the intersection. The farthest point of the key Lane queue is recently optimized, and a maximum cycle time length optimization model is set up. Then, 8 kinds of test environment for different traffic demand are designed. The maximum period of the maximum period is calculated by the method and the existing method. The signal timing scheme under the equal saturation principle is determined by the principle of equal saturation, and the benefit of the two methods is determined. The operation efficiency index of two methods under different test environment is obtained by VISSIM simulation. The results show that, compared with the existing methods, the average queue length of key phase key lanes in the 8 testing environment, the distance to the location of the longest queue relative to the position of the parking line and the stop number of the car are reduced by 10.67%, 11.36% and 11.01% respectively. The total vehicle delay and parking times at the upstream and downstream intersections decreased by 3.86% and 3.81% respectively, and the vehicle number and average speed increased by 1.19% and 3.58%. respectively.
【作者单位】：浙江大学建筑工程学院;
【基金】：国家自然科学基金资助项目(51338008,61304191,51278454)
【分类号】：U491.54

【相似文献】