世界建筑

本研究以上海殷行社区为例，采用卡方检验识别老年居民分龄行为差异，提取步行距离和活动频率两个差异最为显著的行为参数，并将其纳入改进的两步移动搜索模型，量化不同类型公共空间的分龄可达性差异。结果表明：与引入分龄行为参数并按年龄结构加权的可达性结果相比，采用全年龄组统一行为参数会系统性高估公共空间实际供需匹配水平；不同类型正规公共空间对可达性的影响存在显著差异；且正规公共空间可达性不足与非正规公共空间分布显著相关。建议老龄化社区公共空间建设基于老年居民分龄行为差异，将非正规公共空间纳入公共空间体系。

This study takes the Yinhang community in Shanghai as a case study,uses chi-square tests to identify age-segmented behavioural differences among elderly residents,and selects walking distance and activity frequency as the two behavioural parameters with the most significant inter-age differences.These parameters are then incorporated into an improved two-step floating catchment area model to quantify age-segmented accessibility differences across different types of public spaces.The results show that,compared with accessibility measures that incorporate age-segmented behavioural parameters and are weighted by the age structure of elderly residents,using uniform behavioural parameters for all elderly age groups systematically overestimates the actual level of supply-demand matching of public spaces;different types of formal public spaces have significantly different impacts on accessibility;and insufficient accessibility of formal public spaces is significantly associated with the spatial distribution of informal public spaces.The study suggests that public space development in aging communities should be grounded in age-segmented behavioural differences of elderly residents and incorporate informal public spaces into the overall public space system.