This article examines the design of efficient nodal connections for steel frame elements, taking into account international experience. A comparative analysis of the calculation approaches adopted in the European standard EN 1993-1-8, the Chinese standard GB 50017-2017, and domestic regulatory documents is provided. Particular attention is paid to the impact of calculation assumptions and consideration of the deformative rigidity of nodal connections on the performance of frame systems. To verify the validity of the adopted models, numerical simulation of flange connections was performed using the finite element method. The results of the study confirm that the use of modern regulatory approaches allows for a more accurate consideration of the actual performance of nodal connections and contributes to a more rational design.

Keywords: nodal connections, steel frames, flange connections, nodal calculations, normative approaches, numerical modeling, international experience