基于“15分钟生活圈”的轨交站域步行可达性研究——以合肥轨道交通二号线为例

Pedestrian Accessibility of Rail Transit Stations Based on the"15 Minute Life Circle"

步行可达性是交通职能高效利用和综合开发成功的先决条件。为明确轨交站域步行可达性的影响因素并掌握其测度方法,促进生活圈和站域的耦合发展,本研究采用熵值法建立步行可达性指标体系和评价模型,通过对合肥市轨道交通二号线分类研究,测度典型站点15分钟生活圈空间内的步行可达性程度,量化分析不同功能导向下轨道站域空间构成要素对步行可达性的影响机制。结果发现商业服务区站点与公共服务区站点站域生活圈内步行可达性程度基本持平,且远高于居住区站点和混合区站点,最后根据该评估结果提出合理化建议,为站域空间优化调整提供有效支撑的同时,也为轨道交通站域空间的规划设计提供依据和参考。

Pedestrian accessibility is a prerequisite for efficient utilization and successful comprehensive development of transportation functions.In order to clarify the influencing factors of pedestrian accessibility in the rail transit station area and master its measurement methods,and to promote the coupling development of the living circle and station area,we adopt the entropy method to establish a pedestrian accessibility index system and evaluation model.Through the classification study of Hefei Metro Line 2,the degree of pedestrian accessibility within the 15 minute living circle space of typical stations is measured,then we quantitatively analyze the impact mechanism of the spatial components of rail station areas on pedestrian accessibility under different functional orientations.The results showed that the walking accessibility of commercial service area stations and public service area stations within the living circle was basically the same,and much higher than that of residential area stations and mixed type stations.Finally,based on the evaluation results,we proposed reasonable suggestions,so as to provide effective support for the optimization and adjustment of station space,while also to provide a basis and reference for the planning and design of rail transit station space.