ESTUDIO DEL COMPORTAMIENTO MECÁNICO DE ELEMENTOS ESTRUCTURALES COMPUESTOS (CONCRETO-ACERO), POR MEDIO DE SIMULACIONES NUMÉRICAS BASADAS EN EL MÉTODO DE LOS ELEMENTOS FINITOS

Abstract

The aim of this work is to study the mechanical behavior of composite columns, which are classified as steel-concrete coat columns (or encased, SRC), circular concrete filled tubes (CCFT), and rectangular concrete filled tube (RCFT), as well as their structural response when they are subjected to different solicitations (in this case, compression and flexion loading). The numerical research has been done taking account of each material non linear behavior, as well as the effects of the bonding degradation. These numerical simulations were done in the framework of the Finite Element Method, by using FEAP, a program developed by Prof. R.L. Taylor from the University of Berkeley. The advantage of this numerical proposal is its capacity for predicting the structural response of the composite columns, in a better way in comparison to other similar models. Finally, the numerical results were compared to the AISC official recommendations as well to the experimental results.