A predictive continuum dynamic user-optimal model for a polycentric urban city

A predictive continuum dynamic user-optimal model for a polycentric urban city
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多中心城市的预测连续动态用户最优模型

DOI:
10.1080/21680566.2016.1163297
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发表时间:
2017-07
期刊:
Transportmetrica B: Transport Dynamics
影响因子:
--
通讯作者:
Y.C. Du
Y.C. Du
中科院分区:
其他
文献类型:
--
作者:
P. Zhang;Y.Q. Jiang;K. Choi;Y.C. Du

文献摘要

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摘要扩展了预测连续介质动态用户最优模型,研究了多中心城市多中心商务区的交通均衡问题。城市内部的道路网络被认为是密集的,可以被视为一个连续体,在这个连续体中,旅行者可以在二维空间中选择他们的路线。假设旅行者选择他们的路线是为了将到达目的地(即CBD)的实际总成本降至最低。该模型由两部分组成:守恒律部分和哈密顿-雅可比部分。采用有限体积法对非结构网格上的各部分进行求解。由于这两个部分是紧密联系的,并且具有不同的初始时刻,所以求解该模型可以看作是一个不动点问题,采用逐次平均的自适应方法来求解。对一个有两个CBD的城市进行了数值实验,验证了该模型和数值算法的有效性。
ABSTRACT A predictive continuum dynamic user-optimal model is extended to investigate the traffic equilibrium problem for a polycentric urban city with multiple central business districts (CBDs). The road network within the city is assumed to be dense and can be viewed as a continuum in which travellers can choose their routes in a two-dimensional space. Travellers are assumed to choose their route to minimise the actual total cost to the destination (i.e. the CBD). The model consists of two parts: the conservation law part and the Hamilton–Jacobi part. The finite volume method is used to solve each part on unstructured meshes. Because the two parts are closely interconnected and have different initial times, solving the model can be treated as a fixed-point problem, which is solved using a self-adaptive method of successive averages. Numerical experiments for an urban city with two CBDs are presented to demonstrate the effectiveness of the model and the numerical algorithm.
DOI: 10.1016/s0191-2615(01)00011-x
发表时间: 2002-06-01
影响因子: 6.8
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期刊: Transportation Research Part B: Methodological
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发表时间: 2001-06
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多中心区域和多类用户的拥堵定价问题:连续统建模方法
DOI: 10.1080/18128602.2011.621652
发表时间: 2013
期刊: Transportmetrica A: Transport Science
影响因子: --
作者:
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通讯作者: ["H. Ho