Pontificia Universidad Católica de Chile Pontificia Universidad Católica de Chile
Vasquez J. and Riddell R. (2011)

A simple stepped-column buckling model and computer algorithm

Revista : Engineering Journal-American Institute of Steel Construction
Volumen : 48
Número : 1
Páginas : 19-30
Tipo de publicación : ISI


The paper presents a solution to the problem of obtaining the effective length ratios needed for the design of stepped columns. The formulation of a discrete model is presented, and a numerical algorithm is implemented to solve it as a matrix eigenvalue problem. The method is an alternative to using tabulated results, which have been obtained from closed-form solutions for a number of ideal boundary conditions, which in most practical cases is cumbersome and almost always unpredictably inaccurate. A MATLAB coding of the algorithm is provided, and examples illustrating its use are included.