Force resistance of steel columns of industrial buildings with corrosion damage

Abstract

It is proposed to use the computer modeling results to assess the degree of operational suitability and the possibility of further safe operation of building metal structures of industrial buildings and structures that have received corrosion damage, and to predict their reliability at various stages. The force resistance of steel eccentrically compressed columns, taking into account corrosion wear, was determined in SCAD PCS using a linear model of universal finite elements for shell calculation, as well as taking into account physical and geometric nonlinearity in ANSYS PCS. The authors obtained isofields and isolines of various components of displacements and stresses for the linear model, isofields of main stresses per Mises-Hencky, and displacements for the model, taking into account changes in the elastic material modulus with increasing stresses beyond the limits of proportionality. Verification of the computer modeling results for compliance with reality was performed through an experiment. To perform the study, it is possible to evaluate the power resistance eccentrically compressed structures subject to corrosion, to determine the influence of corrosion factors and the locations of elements on the bearing capacity, to give recommendations on ensuring the reliability of the operational characteristics of structures when diagnosing the technical condition of buildings.