Research on the Spatial Mechanism and Strategies for Updating Industrial Heritage in Tianjin Based on Scene Theory

In the context of China’s shift from incremental urban expansion to stock-based regeneration, the adaptive reuse of industrial heritage is no longer limited to physical transformation but increasingly involves spatial reintegration, cultural memory, and public value reconstruction. Taking Tianjin as a case study, this paper introduces Scene Theory into an urban-regeneration framework and combines kernel density analysis, field observation, case comparison, and online public-perception text mining. The study first examines the spatial distribution, accessibility conditions, and renewal typologies of industrial heritage sites in Tianjin. It then uses online comments from Xiaohongshu and Ctrip as supplementary perception data to analyze how different renewal models are experienced in relation to neighborhood environment, material facilities, activities, authenticity, theatricality, and legitimacy. The results show that creative industrial parks, museum-oriented renewal, and commercial renewal differ significantly in spatial location, activity organization, cultural expression, and public recognition. Common problems include uneven accessibility, superficial representation of industrial symbols, excessive consumption orientation, weak continuity of labor memory, limited community participation, and the potential exclusion of local users. Based on these findings, the paper proposes an integrated renewal strategy that emphasizes spatial network repair, authenticity-oriented design, everyday public use, community participation, and inclusive governance. The study provides an analytical framework and practical references for the regeneration of industrial heritage in Tianjin and other post-industrial cities.