MODEL IDENTIFICATION FOR THE EVALUATION OF CRITICAL BUCKLING LOAD IN REINFORCED CONCRETE RECTANGULAR COLUMNS

Abstract

The stability analysis of columns is a complex problem that includes not only first order
effects but also second order ones. The solution depends on a number of parameters and comes from nonpolynomial equations which make the resolution tedious and needs the use of computer programs or abacuses.
The objective of this paper is to establish a new model to determine the critical load for reinforced concrete
rectangular columns subjected to compression in accordance with the Eurocode 2. The tools presented in this
paper will enable engineers to design a broad spectrum of compressed columns or verify their stability
without the use of a computer or design charts. It will also help them to design columns in an economic way
as it evaluates the critical buckling load by taking into account the influence of each parameter on the
stability of the element.