改进潜能模型的城市公共交通系统可达性测度方法——以成都市中心城区为例  

A method for accessibility measurement of urban public transportation system based on improved potential model:A case study of Chengdu city center

作　　者：章震 刘刚[1] 何敬[1] ZHANG Zhen;LIU Gang;HE Jing(College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]成都理工大学地球科学学院,成都610059

出　　处：《时空信息学报》2024年第1期85-93,共9页JOURNAL OF SPATIO-TEMPORAL INFORMATION

基　　金：国家自然科学基金项目(42371418);河北地信集团科技创新项目(HBDXKJ2023-03)。

摘　　要：城市公共交通系统主要为城市居民提供高效出行服务,故其可达性情况将直接影响城市的稳定运行。针对传统的潜能模型对居民的交通站点选择影响因素考虑较少的问题,本研究使用改进潜能模型对城市公共交通系统的可达性进行度量研究。首先,利用复杂网络理论,考虑公共交通线路和站点的度中心性、介数中心性和接近中心性构建出一种综合中心性度量指标;其次,引入潜能模型并考虑人口空间分布,建立顾及人口空间异质性的改进潜能模型,进而结合综合中心性度量指标提出一种城市公共交通系统可达性测度方法;最后,为评价方法的有效性,以成都市中心城区为例,对融合地面公交网络和地铁网络的公共交通网络进行实验分析。结果表明:武侯区和锦江区的公共交通可达性较优,成华区和金牛区的可达性较差;可达性的高值区域主要分布在城市几何中心处和武侯区与锦江区的交界处。研究结果较好地反映了成都市中心城区公共交通系统的可达性情况,可为进一步评价城市公共交通系统可达性提供方法支撑。With rapid urbanization,ensuring high accessibility to public transport is critical for promoting sustainable urban development and improving the quality of life for residents.Public transport accessibility is a significant concern in urban and transport planning,involving the convenience of public services,the efficiency of transport links,and the interconnectivity between different areas.The potential model is an important method for measuring the accessibility of public transportation.To promote urban sustainable development,this paper uses the potential model to measure the accessibility of urban public transportation system.Based on complex network theory,this paper constructs a comprehensive centrality measurement index considering the degree,number of intersections,and proximity centrality of public transport lines and stations.Building on this foundation,the potential model is introduced,taking into account the spatial distribution of population.The improved potential model is established,considering the spatial heterogeneity of the population.Subsequently,a comprehensive centrality measurement index is proposed to measure the accessibility of urban public transport system.To test the method’s effectiveness,the improved potential model is compared with the traditional potential model in the downtown area of Chengdu.The public transportation network,integrating the surface bus network and the subway network,is experimentally analyzed.The results show that the improved potential model considers more factors than the traditional potential model,providing more practical significance.High accessibility areas are widely distributed in the central urban area of Chengdu,while low accessibility areas are mainly situated in the city’s periphery.Concentrated areas with high accessibility in the southeast of Wuhou District are attributed to its proximity to Chengdu South Railway Station and the relatively high surrounding transportation capacity..Wuhou District and Jinjiang District exhibit better public transpor

关 键 词：复杂网络 可达性 潜能模型 城市公共交通 

分 类 号：U491.14[交通运输工程—交通运输规划与管理]