Optimization of bolted connections configurations of frames composed of cold-formed sections

Abstract

Portal frames manufactured from hot-rolled steel are widely used in industrial buildings since the plastic analysis theory was developed, so knee connection behavior of these industrial frames has been well researched. With the increased use of portal frames composed of cold-formed sections, the development of structural connecting systems has become a more important research objective, that are favorable to connection elements and the behavior of bolted frame connections should be well understand. Bolted moment connections have been very popular for their better distribution of straining action and for better full filling serviceability requirements. However a clear understanding of the behavior of every single element in the connection as well as the interaction between them is not clear due to their complex behavior.