Design and analysis of an industrial steel building. Limit states, stability check

This work is focused on the design of a structural steel industrial building of double-T type section located in an industrial area of Valladolid (Spain). Firstly, a linear analysis is carried out to dimension the structure and check that it resists according to the established regulations, the Technical Building Code (CTE), the national adaptation of the Eurocodes (ECs). For the analysis of the structure, the 3D model of slender bar bending (Navier-Bernoulli bending theory) and the non-uniform twist or constrained warping model (Vlasov's torsion theory) are considered. In the second place, a nonlinear analysis is performed with the objective of verifying the Ultimate Limit State of stability of the structural elements and of the industrial building as a whole. All this without the need to estimate buckling coefficients of each of the beams that make up the structure, and without the need for important simplifications. Finally, a linear analysis is once more performed to check the Service Limit State for the frequent combination of actions. The solution of the problem results from an iterative process of searching for the best solution, that is, the one that, with the least amount of steel used, fulfills all the requirements: resistance, stability and displacement limits established by the current regulation.