Abstract: The metal roof system is particularly sensitive to wind load, and the roof components are fixed by connectors, which is easy to cause connection failure under high wind loads. According to the stress distribution and failure mode of metal roof and connector under wind load, a novel snap-in type connector with free rotation capability puts forward. The rotation of the connector can offset the deformation of the roof and relieve the temperature-induced stress, rendering the whole roof system flexible and adaptable, so as to improve the anti-wind performance of the whole roof panel. The finite element model is established by the finite element software ANSYS, and the wind resistance bearing capacity and wind resistance failure mode of the new T-shaped connector is obtained. The effectiveness and rationality of the new T-shaped connector in enhancing the wind resistance of the metal roof system are verified by comparing it with the original T-shaped connector.

Key words: metal roof, new T-shaped connector, finite element analysis, anti-wind performance