基于城市公共交通的区域可达性研究

Study of Regional Accessibility on Public Transportation

为了准确描述区域内各点可达性及空间分布情况,解决城市公共交通网络不合理分布问题,以城市公共交通系统为研究对象,以可达时间、可达距离和公共交通服务状态作为可达性指标的研究数据基础,对区域内易达性、可动性和通达性指标进行研究分析.在现有的空间阻隔模型基础上建立了公交二次可达性模型,并通过空间分析法对可达性分布进行研究.经实例验证,表明该方法不仅能够准确计算区域各个节点的可达性,还能反映区域内可达性分布特征,为城市公共交通优化发展提供了有力的科学依据.

In order to describe the accessibility and distribution within the region accurately to solve the unrea- sonable distribution of urban public transport network, urban public transport system is studied. Accessibility index accessible time, accessible distance and public transport service status are used as data base, and the ac- cessibility mobility and accessibility indicators of the region are analyzed. The secondary accessibility model of public transportation is established based on the existing spatial barrier model, and the accessibility distribution is studied by spatial analysis. Case study shows that the method can accurately calculate the reachability of each node in the region, and reflect the distribution of accessibility within the region characteristics, which pro- vides a scientific basis for the optimization of urban public transport.