考虑首末站约束和站间客流强度的公交线网优化

发布时间：2019-02-17 08:14

【摘要】：为解决已有可达性研究没有量化可达性与客流需求关系,以及没有考虑实际公交网络中线路首末站布局位置的问题,首先提出广义可达性的概念,引入可达强度指标,并在此基础上建立了已知规划站点布设和规划线路数量,以客流强度与可达强度匹配最佳和可达性值最大为目标,以首末站布局位置要求为约束的公交线网可达性优化模型,设计了求解该模型的遗传算法,并通过算例对模型和算法进行验证。研究结果表明:考虑量化可达性与客流关系及首末站约束条件后的公交线网优化方案,其可达强度与客流强度匹配程度比不考虑上述条件的公交线网优化方案提高了1.57%,且最终优化方案满足首末站布局位置约束条件;在公交线网设计及优化时,考虑可达性与客流关系能够有效提高线网布局与客流出行需求的匹配程度,使线网中的直达出行比例提高,乘客出行更为便捷;依据公交线网规划与优化过程中首末站点应布设在公交场站内或靠近公交场的实际情况,增加首末站点布局约束条件可使最终优化线网与实际相符。研究为公交线网设计及优化提供了一种辅助决策方法,该方法考虑了乘客出行需求量以及公交线网首末站布局要求,使最终优化结果更加符合实际需求。
[Abstract]:In order to solve the problem that there is no quantitative relationship between reachability and passenger flow demand in the research of reachability, and the location of the first and last station in the actual public transport network is not considered, the concept of generalized reachability is put forward, and the reachability index is introduced. On the basis of this, a public transit network accessibility optimization model with the best matching and maximum reachability value of passenger flow intensity and reachability intensity is established, and the location requirement of the first and last station is taken as the constraint. A genetic algorithm for solving the model is designed, and the model and algorithm are verified by an example. The results show that the optimal scheme of bus network after considering the relationship between reachability and passenger flow and the constraint conditions of the first and last stations, the matching degree between the reachability and the passenger flow intensity is 1.57 higher than that of the bus network optimization scheme which does not take into account the above conditions. And the final optimization scheme meets the position constraint condition of the first and last station layout; In the design and optimization of bus network, considering the relationship between reachability and passenger flow can effectively improve the matching degree between network layout and passenger flow travel demand, so that the proportion of direct travel in the network is increased, and the passenger travel is more convenient. According to the actual situation that the first and last stations should be located in or near the bus yard in the process of planning and optimization of the bus network, adding the constraint conditions of the layout of the first and last stations can make the final optimization of the network consistent with the actual situation. The study provides an auxiliary decision method for the design and optimization of bus network. This method takes into account the passenger travel demand and the layout of the first and last station of the bus network, so that the final optimization results are more in line with the actual needs.
【作者单位】：西南交通大学交通运输与物流学院;西南交通大学综合交通运输智能化国家地方联合工程实验室;
【基金】：国家自然科学基金项目(51578465);国家自然科学基金青年项目(71402149) 西南交通大学研究生创新实验实践项目(YC201507106)
【分类号】：U491.17

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