Design study on the function of school overhead sports fields as community emergency shelters based on UNA analysis

Communities are at the forefront of urban disaster prevention and mitigation efforts, where community emergency shelters are a key part of improving community resilience and building healthy cities. Schools are built with low intensity, have an open field environment, and are often used as urban shelters. Primary and secondary schools are within a reasonable service radius of the community, and their sports sites are bound to be disaster emergency sites for the communities in which they are located. In recent years, with the process of urbanization, the land conditions of primary and secondary schools have shown a general constraint, and elevated sports fields are increasingly becoming a new construction trend. As a result, the question of whether or not elevated spaces can continue to serve the function of emergency evacuation has become a new and interesting proposition. Based on the architectural case study, this study uses UNA analysis to investigate the adaptability of elevated sports fields and community emergency shelters, and concludes that elevated sports fields have their own advantages as emergency shelters. The design strategies for the emergency shelter function of overhead sports fields are proposed from two levels: planning layout and design of building units.