Bemessung von Trägern mit Anschlüssen in Form des hängenden Profils

Analysis and design of members with hanging-profile connections.

The so called hanging-profile is a commonly used type of joint in steel structures for horizontal bracing systems, where large compression forces are transferred. This kind of joint is characterized by the connection of a bracing beam to gusset plates only at the top flange. This type of structure is usually simplified as a single-span beam with fork bearings. Due to the overestimation of the system stiffness in the connection areas under this assumption, basic engineering with this conventional approach has been considered generally not safe.
Based on an extensive parametric study using finite-element-models calibrated on a serial of 1:1 scale tests, a new design approach was developed for the lateral torsional buckling check of members with this kind of connection. To meet the standards safety level, the new design formulae were further analyzed with the semi-probabilistic method according to EN 1990 Annex D.