Contribution to the evaluation of the critical load of local (column) and global buckling of multi-storey buildings.

Abstract

This study focuses on evaluating the critical buckling load, both locally and globally, of columns integrated into multi-story structures. The methodology is based on a rigorous structural analysis, using the finite element method (FEM), combining numerical modeling, analytical approaches, and normative compliance according to CM66 and EC3 standards. The analysis of the local buckling critical load examines the stability of the column section, while the global evaluation focuses on the stability of the entire structure. Particular attention is paid to the influence of load proximity, element configuration, and support properties. Analytical methods, including Euler's theory and stability criteria, are integrated with numerical simulations to refine the accuracy of the evaluation. The main objective of this research is to identify the determining factors of buckling resistance, including effective length, cross-section, and support conditions. The conclusions of this study will serve to formulate recommendations aimed at optimizing the design and improving the safety of buildings. In conclusion, this study contributes to a thorough understanding of structural behavior under critical loads.