城市轨道交通站点布局优化研究

A Study of Optimization of Station Distribution in Urban Rail Transit

由于轨道建设的高成本特性,站点布局的合理与否直接关系到轨道交通的运行效率和社会经济利益.为此,站点布局优化需从实际出发,在全面分析其影响因素的基础上,按照"按需分布、合理布设"的原则,依据轨道线路系统的总成本最小为优化目标,并考虑客流量随车站间距的概率分布来建立合理站间距的优化模型,结合其影响因素,提出科学合理的站点选址优化方法,实现轨道交通与其他交通方式的和谐发展.

Because of the high cost of rail construction, whether the station distribution of rail transit is reasonable or not directly relates to the efficiency and social and economic benefit. So. the optimization of station layout should be based on reality and comprehensive analysis of the influential factors on station locations and distribution, according to the principle of ＂distribution in term of need. reasonable layout＂. Taking the minimum total costs（including construction costs, operation costs, and passenger outgoing costs and the ticket costs） of the rail transit system as the optimization target, and considering probability distribution of passenger flow change with the station spacing, the designers are supposed to build up the reasonable station spacing model, then linking influential factors, put forward scientific and reasonable station locations to carry out the harmonious development of rail transit and other forms of transportation.