路外停车右转驶入对主路上游车流影响的动态长度模型

发布时间：2018-05-02 05:31

本文选题：交通工程 + 动态长度　；参考：《公路交通科技》2014年03期

【摘要】：以城市路外停车出入口影响区作为研究对象,将拟停放车辆从最右侧车道右转驶离主路进入停车场的过程对于上游运行车辆的影响区长度表述为停放车辆减速进入停车场距离和跟驰运行车辆的交通波传播距离2个部分。通过理论分析并结合调查数据建立了基于不同驶入时间及不同饱和度下影响区动态长度的计算模型,确定了停车影响时间、速度变化系数等主要参数的适用条件。通过实例并采用VISSIM5.3软件对模型进行了仿真对比验证,主要结论有:(1)当驶入时间在4~8 s时,饱和度与影响区长度呈现反比关系;驶入时间大于8 s时,饱和度与影响区长度呈现正比关系;(2)当饱和度在[0.46~0.5]驶入时间在4~15 s时车辆驶入对主路上游车辆没有影响;(3)当饱和度大于0.6,驶入时间大于9 s时,车辆驶入对主路上游车辆的影响长度增幅明显。
[Abstract]:Taking the influence area of parking entrance and exit outside the city road as the research object, In this paper, the length of the influence zone for the upstream running vehicle in the course of turning right from the right-most lane to the parking lot is expressed as two parts: the parking vehicle decelerating into the parking lot distance and the traffic wave propagation distance following the running vehicle. Based on the theoretical analysis and the investigation data, a calculation model of the dynamic length of the affected area is established based on the different entry time and different saturation, and the applicable conditions of the main parameters, such as the influence time of stopping and the coefficient of variation of the speed, are determined. The model is simulated and verified by using VISSIM5.3 software. The main conclusions are as follows: 1) when the entering time is 4 ~ 8 s, the saturation is inversely proportional to the length of the affected zone, and when the entering time is more than 8 s, the saturation is inversely proportional to the length of the affected zone. The saturation is proportional to the length of the affected area. When the saturation is at [0.46 0. 5] entry time is 4 ~ 15 s, the vehicle entry has no effect on the upstream vehicle of the main road.) when the saturation is greater than 0.6, the entering time is more than 9 s, when the saturation is greater than 0.6, the entering time is more than 9 s. The influence length of vehicle entering on the upper reaches of the main road increases obviously.
【作者单位】：东南大学交通学院;扬州大学建筑科学与工程学院;宁波大学海运学院;
【基金】：国家自然科学基金项目(51078084) 江苏省教育厅自然科学基金项目(12KJD580006)
【分类号】：U491

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