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换乘行为影响下的城市公交配流算法

, PP. 70-78

Keywords: 交通规划,公交配流,换乘行为,改进的Logit模型,公交路径,路径阻抗

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Abstract:

针对中国大城市的工作生活模式与公交网络的特性,以成都市居民公交出行为研究对象,提出了符合乘客路径选择行为的广义公交路径。考虑了公交出行的路段阻抗和站点阻抗,建立了公交路径阻抗函数,提出了有效路径的确定方法。基于改进的Logit模型,建立了一种换乘行为影响下的路径选择模型。以成都市部分公交网络为例,应用提出的配流算法进行实例验证。分析结果表明当选定的4条公交线路高峰时段的最小发车间隔分别为4、4、3、3min,非高峰时段的最大发车间隔均为10min时,对应的最小换乘步行时间和最大换乘步行时间分别为0、6min;当最大路径阻抗和最小路径阻抗分别为71.5、51.5min时,对应的乘车时间分别为60、48min,路径选择比例分别为5.53%、41.98%;当最大路径阻抗和最小路径阻抗分别为52.5、48.5min时,对应的乘车时间分别为42、39min,路径选择比例分别为13.40%、62.07%;考虑换乘行为时,配流结果与实际值的最大相对误差、最小相对误差和平均相对误差分别为16.46%、11.09%、14.42%,不考虑换乘行为时,最大相对误差、最小相对误差和平均相对误差分别为34.37%、11.38%、23.15%。考虑换乘行为的配流结果更贴近实际情况。

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