Stress-strain state model of building metal frame made of tube trusses and bar joists with regard to geometrical imperfections

Abstract

The paper studies the metal frame industrial building during the reconstruction of its bar joists having imperfections in the form of non-uniform geometric deviations from the vertical position.Purpose: The aim of this work is to calculate the allowable value of horizontal deviation of bar joists from the vertical position.Methodology: The computational justification of using roof bar joists with regard to geometric imperfections in the reconstruction of the industrial building, is provided by modeling the stress-strain state of the metal frame in Ing + 2021, MicroFe software using the finite element model.Research findings: The limiting value of the geometric deviation from the bar joist plane, at which their vertical position or replacement is not required, is justified by calculation.