Szukana fraza: [Abstract = "The main purpose is to present the stochastic perturbation\-based Finite Element Method analysis of the stability in the issues related to the influence of high temperature resulting from a fire directly connected with the reliability analysis of such structures. The thin\-walled beam structures with constant cross\-sectional thickness are uploaded with typical constant loads, variable loads and, additionally, a temperature increase and we look for the first critical value equivalent to the global stability loss."]