蚁群算法下交通流分配对路网结构可靠度的影响

发布时间：2018-03-24 17:34

本文选题：交通运输工程　切入点：改进蚁群算法　出处：《重庆交通大学学报(自然科学版)》2017年05期

【摘要】：利用自编的MATLAB软件下的蒙特卡罗程序求解路面结构可靠度,并将之与道路网络可靠度相结合,得到能够更加反应实际情况的道路网络结构可靠度,并给出了其计算的数学模型。提出了以饱和度0.6作为交通流量分配的标准。鉴于目前蚁群算法理论研究方面的不充分性,将改进蚁群优化算法下的交通流量分配方法与传统的较成熟的解析型求解算法以道路网络结构可靠度为依据进行定量比较,通过具体的实例对比,在一定程度上验证了蚁群算法用于路网交通流量分配的正确性和可靠性。同时,通过改进的蚁群优化算法对拥堵道路进行流量分配前后的结果对比可知:在交通流量分配后,同一路网的道路网络结构可靠度会降低。这表明对路网中的拥堵道路进行流量分配时,其他道路上的车流量会增加、可靠度会降低,最终会致使整个路网的可靠度下降。
[Abstract]:The reliability of pavement structure is solved by Monte Carlo program under MATLAB software, and the reliability of road network is obtained by combining it with the reliability of road network. The mathematical model of its calculation is given, and the saturation 0.6 is proposed as the standard of traffic flow allocation. In view of the insufficiency of ant colony algorithm theory research at present, The traffic flow allocation method based on improved ant colony optimization algorithm is compared quantitatively with the traditional analytical algorithm based on the reliability of road network structure. To a certain extent, it verifies the correctness and reliability of the ant colony algorithm used in the traffic flow allocation of road network. At the same time, through the improved ant colony optimization algorithm, the results before and after the traffic allocation of congested roads are compared: after the traffic flow allocation, The reliability of the network structure of the same road network will be reduced, which indicates that the traffic flow on other roads will increase and the reliability will decrease, which will eventually lead to the decrease of the reliability of the whole road network when the traffic flow is distributed to the congested road in the road network.
【作者单位】：上海大学土木工程系;
【基金】：上海市教委科研创新项目(13YZ001)
【分类号】：U491

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