基于出行效用的城市轨道交通时空可达性研究

Time and Space Accessibility Research of Urban Rail Transit Based on Travel Utility

随着社会的快速发展,满足个性化需求是现代地理服务软件、交通服务部门的目标之一,基于活动出行的时空可达性研究更具实践意义。本文综合时空约束理论与效用模型,提出了基于出行效用的城市轨道时空可达性模型,其影响因子不仅包含了站点的活动吸引力、个体出行的时间和费用成本,还有站点在整个轨道交通系统中的区位因素。和以往模型相比,考虑的影响因素更加全面,实现了更接近于反映真实状况的个人出行可达性研究。最后,通过对广佛地铁可达性进行实证验算,结果表明该方法在分析特定时空约束条件下可达性分布特征的有效性,可为个体出行活动地点推荐以及智能交通出行提供最优的出行选择方案。

With the rapid development of society, the highest goal of modern geographic service software, transportation services is to meet the individual needs. Thus, the spatio-temporal accessibility based on specific travel activities becomes more practical significance, Based on traditional researches, this paper puts forward an spatio- temporal model of urban rail accessibility based on the utility. The influencing factors include the attraction of the site, individual travel time and cost, and the location factors in the rail transit system. Compared with the previous model, it considers factors more comprehensive and it is closer to reflect the real situation of the individual travel accessibility research. Finally, it gets reasonable results through the Guangfo subway empirical calculation, which demonstrates the effectiveness of this method for accessibility analysis in specific time and space constraints. It can recommend appropriate location for individual travel and provide the best travel options based on different travel purpose.