Review article

There is obtained an analytical solution to the problem of the overall stability of two-branched element of steel structures, taking into account ensuring the stability of the branch between the lattice nodes (local stability) with an arbitrary distribution of bending moments along the length of the rod. Herewith, the physical nonlinearity along the axis of the most loaded branch from the limit of proportionality to the yield point is compensated by additional eccentricities of the longitudinal force. The use of the actual loading scheme of the element made it possible to reveal significant reserves of stability, which is very important when assessing the technical condition of metal structures of operated buildings and structures.