大型车比例对城市快速路通行能力的影响研究
发布时间：2018-08-04 13:15
【摘要】：大型车辆的影响是混合交通流通行能力计算时无法回避的问题。传统基于大车修正系数的方法虽简单,但取值多参考国外,合理性值得研究;而基于混合交通流车头时距的模型虽考虑全面,但过多的参数影响了实际可操作性。以快速路感应线圈数据为基础,采用实测数据分析和理论推导相结合的方法探索大型车比例和快速路通行能力之间的定量关系。研究指出,随着大型车比例的增加(不超过30%时),未经车型换算的快速路单车道通行能力下降规律符合特定二次函数。
[Abstract]:The influence of large vehicles is an unavoidable problem in the calculation of traffic flow capacity. Although the traditional method based on the correction coefficient of large vehicle is simple, the rationality of the model based on the head-distance of mixed traffic flow is worth studying, but the model based on the head-distance of mixed traffic flow takes into account all aspects, but too many parameters affect the practical maneuverability. Based on the data of the induction coil of the expressway, the quantitative relationship between the ratio of the large vehicle and the capacity of the expressway is explored by combining the analysis of the measured data with the theoretical derivation. It is pointed out that with the increase of the proportion of large vehicles (not more than 30 hours), the law of decreasing capacity of single lane of expressway without type conversion accords with the special quadratic function.
【作者单位】： 杭州市综合交通研究中心;
【分类号】：U491.114
[Abstract]:The influence of large vehicles is an unavoidable problem in the calculation of traffic flow capacity. Although the traditional method based on the correction coefficient of large vehicle is simple, the rationality of the model based on the head-distance of mixed traffic flow is worth studying, but the model based on the head-distance of mixed traffic flow takes into account all aspects, but too many parameters affect the practical maneuverability. Based on the data of the induction coil of the expressway, the quantitative relationship between the ratio of the large vehicle and the capacity of the expressway is explored by combining the analysis of the measured data with the theoretical derivation. It is pointed out that with the increase of the proportion of large vehicles (not more than 30 hours), the law of decreasing capacity of single lane of expressway without type conversion accords with the special quadratic function.
【作者单位】： 杭州市综合交通研究中心;
【分类号】：U491.114
【共引文献】
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