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基于行程时间可靠度的有限离散路网优化

, PP. 94-99

Keywords: 交通工程,城市路网设计,双层规划模型,行程时间可靠度

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Abstract:

?为了提高城市道路交通网络的行程时间可靠度,将交通规划专家依照其经验和综合判断能力提出的若干待建、改建道路作为被优化对象,建立了考虑城市路网改造中工程约束的有限离散路网设计双层规划模型。针对该模型设计了基于蒙特卡罗随机模拟技术并考虑约束条件的遗传算法进行求解,将该模型及其求解算法在广州老城区主干路网上进行了实际应用。结果表明:在路网改造成本约束下,该模型及其求解算法能有效提高行程时间可靠度,路网改造方案有较强的工程可行性;研究结果可为城市路网的改善和建设提供决策支持。

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