Research on Key Techniques for Long-Span Steel Roofs and Rooftop PV Systems Against Strong Typhoons

Wind resistance performance and safety reliability are key research focuses for metal roofs in regions prone to strong typhoons. Steel plate roofs offer high wind-uplift resistance， economic efficiency， and environmental sustainability， but research on their wind resistance remains relatively limited compared to that on aluminum-magnesium-manganese and stainless steel roofs. This paper takes the long-span roof project of Shenzhen Ice and Snow World as a case study. Based on the wind force transmission mechanisms of the steel roof and the photovoltaic （PV） system， it elaborates on the testing and development process of key load-bearing components such as enhanced PV modules， reinforced wind-resistant clips， and enhanced mounting bases. Through wind uplift tests on both the steel roof system and the PV system， this study investigates the load-stress and load-displacement curves of the steel roof， collects and analyzes experimental data and failure modes， and quantifies the contribution levels of influencing factors to the wind resistance capacity of the aforementioned structural elements.