论文部分内容阅读
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。
In order to solve the problem that the existing reachability research does not have the relationship between quantitative reachability and passenger flow demand and the layout of the first and the last station of the line in an actual public transportation network, the concept of general reachability is first introduced and the reachability index On the basis of this, the number of known planned sites layout and planned routes is established. With the objective of matching the best passenger flow strength and reachable strength and maximizing the reachability value, the bus line network which is constrained by the layout requirements of the first and last stations is reachable The optimization model is designed, and the genetic algorithm to solve the model is designed. The model and algorithm are validated through examples. The results show that the matching degree between reachable strength and passenger flow intensity is improved by 1.57% compared with that of public transportation network without considering the above conditions, considering the relationship between reachability and passenger flow and the bus network optimization scheme after the constraints of first and last stations. , And the final optimization scheme can meet the layout constraints of the first and last stations. In the design and optimization of the public transportation network, considering the relationship between accessibility and passenger flow can effectively improve the matching between the layout of the line network and the travel demand of the passenger flow so that the direct Travel ratio is more convenient for passengers to travel. According to the actual situation that the first and last stations should be laid in the bus station or close to the bus market during the planning and optimization of bus network, increasing the layout constraints of the first and last stations can make the final optimized network and The actual match. The study provides a decision-making method for bus network design and optimization. The method takes into account the demand of passengers and the layout requirements of the first and last stations of the bus network, so that the final optimization result can be more in line with the actual demand.