A numerical study on the structural performance of a ductile connection under fire conditions

The component-based model of a novel ductile connection has been incorporated into the software Vulcan in order to facilitate global frame analysis within performance-based structural fire engineering design process. This paper reports on validation and verification model, as well applications investigate effects connections responses long-span frames at high temperature. Firstly, three single-beam models with both ends, connected rigid supports, are used verify that correctly Vulcan, via comparisons against detailed finite element modelling Abaqus. performance compared same idealized rigid, pinned conventional end-plate connections, initially using limited sub-frame model. Results show that, above mentioned types, provides much higher axial rotational ductilities accommodate deformations generated by beams their temperatures rise. As part this process, these instrumental greatly reducing forces which surrounding structure is subjected. Finally, parametric studies varying several key parameters have carried out, optimize enhance its subject catenary action very temperature prevent potential fracture progressive collapse.