PCA尺度对地铁站建成环境与客流关联影响研究  

The Influence of PCA Scale on the Correlation Model between Urban Built Environment and Rail Passenger Flow

作　　者：卢源[1] 赵瑾 姚轶峰 LU Yuan;ZHAO Jin;YAO Yifeng(School of Architecture and Design,Beijing Jiaotong University,Beijing 100044)

机构地区：[1]北京交通大学建筑与艺术学院,北京100044

出　　处：《都市快轨交通》2025年第1期30-36,共7页Urban Rapid Rail Transit

基　　金：国家自然科学基金(52102386);国家青年科学基金(51908028)。

摘　　要：地铁站点周边建成环境影响客流量,但行人集水区(pedestrian catchment area,PCA)大小尚未统一。本研究旨在验证PCA大小是否影响地铁客流与建成环境相关性研究的结果值。以南宁市轨道交通1号线25个站点为例,选取居住人口、工作岗位、商业设施等5个指标作为自变量,站点实际乘客量作因变量。采用OLS回归模型,对比不同PCA半径变量下模型拟合和影响因素的分析结果。地铁站点PCA不同范围的数据收集,对客流量与建成环境关系研究结果存在影响。针对南宁市,其PCA的半径取值为600 m,在地铁客流与建成环境相关性模型的拟合好于300 m和900 m。PCA范围会导致地铁客流与建成环境关联研究结果不一致。未来相关研究需针对不同PCA半径进行模型分析,根据拟合效果确定适宜的PCA尺度,提高研究准确性。With the rapid development of urban rail transit,the subway,as an important public transportation,provides an efficient large-scale travel option.Previous studies generally believe that the built environment around subway stations affects the passenger flow,but the size of PCA(Pedestrian Catchment Area)has not yet been unified.The purpose of this study was to verify whether the size of PCA affects the outcome value of the correlation study between metro ridership and the built environment.Taking 25 stations of Nanning Metro Line 1 as an example,five indicators were selected as independent variables,including residential population,jobs and commercial facilities,and the actual passenger volume of the stations was used as the dependent variable.The OLS regression model was used to compare the results of model fitting and influencing factor analysis under different PCA radius variables.There were differences in the research results of the relationship between passenger flow and built environment in the data collection of PCA in subway stations within different catchment areas.For Nanning,the radius of the PCA is 600 m,and the fitting of the correlation model between subway passenger flow and built environment is better than that of 300 m and 900 m.The scope of PCA will lead to inconsistency in the results of the study on the association between subway passenger flow and the built environment.In the future,it is necessary to conduct model analysis for different PCA radii and determine the appropriate PCA scale according to the fitting effect to improve the accuracy of the research.

关 键 词：城市轨道交通 行人集水区(PCA) 回归模型 建成环境 客流 南宁市 

分 类 号：U231[交通运输工程—道路与铁道工程]