Numerical modeling of a steel beam strengthened by the method of changing the bending stiffness
Abstract
Numerical modeling of a steel beam strengthened by the method of changing the bending stiffness
Incoming article date: 03.07.2025The article contains the results of stress analysis in dangerous sections of a single-span steel box beam made of two channels, strengthened with two metal strips welded at the top and bottom between the channels, with different geometric characteristics of the strengthened elements. The results of a numerical experiment of strengthened beams are presented. According to the results of the numerical experiment, it was found that equalization of stresses in dangerous sections allows to reduce the material consumption of the structure in comparison with beams selected according to the assortment for the required moment of resistance.
Keywords: steel beam, load-bearing capacity, stresses, displacements, finite element method, structural strengthening