Experimental Study of Flanged Joints of Damaged Steel Frame Elements

Among the enterprises currently operating in Russia, there is a large proportion of industrial buildings with a load-bearing steel frame, in which there are various types of damage received over the years of operation. It is difficult to prevent the appearance of such defects, and given the long time of operation of buildings, many of which were built in the middle of the last century during the era of industrialization, the amount of accumulated damages is increasing. The assessment of the bearing capacity of frames of industrial buildings and structures in the presence of damages must be carried out taking into account the actual weakening of the sections of the bearing elements. Verification calculations of elements and assemblies in accordance with regulatory documents should be carried out according to methods that take into account the weakening of the structure by introducing correction factors. However, in this case, it is impossible to obtain information about the presence of stress concentration in the damaged zone and about the tendency for the development of plastic deformations in it. The results of tests of experimental samples of flange joints, graphs of their displacements and relative deformations are presented. These data can be used both to create finite element models of nodes and calculate them in a non-linear setting, and to analyze the actual stress distribution in the nodes of the frames of multi-storey buildings.

N.A. BUZALO¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
S.I. EVTUSHENKO², Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
B.A. CHERNIKHOVSKY¹, Graduate Student (This email address is being protected from spambots. You need JavaScript enabled to view it.);
O.V. NEVELSKY³, Chief Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ South Russian State Polytechnic University (NPI) named after M.I. Platov (132, Prosveshcheniya Street, Novocherkassk, 346428, Russian Federation)
² National Research Moscow State University of Civil Engineering (26, Yaroslavskoye Shosse, Moscow, 129337, Russian Federation)
³ Research Institute of Building Physics of RAACS (21, Lokomotivniy proezd, Moscow, 127238, Russian Federation)

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