Open AccessValidation of the load-bearing capacity of the frame assembly of metal structures on the standard 2.440 series using IDEA StatiCa
Author(s) -
Denis A. Melnikov,
Tatiana Dmitrieva
Publication year - 2020
Publication title -
izvestiâ vuzov. investicii, stroitelʹstvo, nedvižimostʹ/izvestiâ vuzov. investicii. stroitelʹstvo. nedvižimostʹ
Language(s) - English
Resource type - Journals
eISSN - 2500-154X
pISSN - 2227-2917
DOI - 10.21285/2227-2917-2020-3-406-419
Subject(s) - structural engineering , node (physics) , finite element method , series (stratigraphy) , welding , frame (networking) , coupling (piping) , vibration , component (thermodynamics) , stress (linguistics) , engineering , computer science , mechanical engineering , paleontology , linguistics , philosophy , physics , quantum mechanics , biology , thermodynamics
The paper aims to study the actual operation of a rigid frame unit for coupling a crossbar with a column on high-strength bolts according to the standard 2.440-2 series using modern software systems of the component finite element method. Special attention was paid to the operation of nodal elements, as well as their stress-strain state. Based on the results of static calculations, the cross-sections of the elements under consideration, as well as the components of the node (plates, bolts, seams, etc.) were selected from the tables of the standard series. Subsequently, using the component finite element method serving as the basis of the IDEA StatiСa software, all the components of the node were mod-elled with respect to acting forces. The conducted calculations confirmed the suitability of the obtained node model for identifying inconsistencies in the series and modern standards. Using stresses on plates, bolt and welding forces, as well as several forms of vibration to assess the stability of compo-nents, the applicability of the node in question in the proposed configuration was evaluated. It turned out that the node failed to meet modern standards in terms of design conditions. Moreover, the serial bolts were overloaded by almost 38%, and some welds approached the limit state. When used in real conditions, this can lead to serious losses, including human lives. Recommendations are given for changing the specific configuration of the node in order to protect it from the destruction of any nature, including local buckling failure.