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力学学报  2012 

城市快速路交通流速密关系模型优化研究

DOI: 10.6052/0459-1879-11-377, PP. 709-717

Keywords: 交通流模型,实测数据,参数优化,拟合优度

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Abstract:

从实测得到的210920中国城市快速路“车速-车头间距”数据中,选取包含26773条数据的3个样本作为不同类型交通流的代表,对多个交通流“速-密关系”模型进行参数优化和拟合优度比较研究,给出优化模型参数的定性和定量规律.修正形式的Kerner-Konhauser平衡函数和Payne平衡函数通过参数优化,分别在畅通和拥挤条件下具有优度相对最高的拟合结果,Greenshields模型(等价地,m=3时的一维管流模型)则对介于两种条件之间的实测数据具有优度相对最高的拟合结果.

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