大型車比例對城市快速路通行能力的影響研究
發(fā)布時間:2018-08-04 13:15
【摘要】:大型車輛的影響是混合交通流通行能力計算時無法回避的問題。傳統(tǒng)基于大車修正系數(shù)的方法雖簡單,但取值多參考國外,合理性值得研究;而基于混合交通流車頭時距的模型雖考慮全面,但過多的參數(shù)影響了實際可操作性。以快速路感應(yīng)線圈數(shù)據(jù)為基礎(chǔ),采用實測數(shù)據(jù)分析和理論推導(dǎo)相結(jié)合的方法探索大型車比例和快速路通行能力之間的定量關(guān)系。研究指出,隨著大型車比例的增加(不超過30%時),未經(jīng)車型換算的快速路單車道通行能力下降規(guī)律符合特定二次函數(shù)。
[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.
【作者單位】: 杭州市綜合交通研究中心;
【分類號】: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.
【作者單位】: 杭州市綜合交通研究中心;
【分類號】:U491.114
【共引文獻(xiàn)】
相關(guān)期刊論文 前10條
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