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Carlos Eduardo Luna de Melo1 and Guilherme Sales Soares de Azevedo Melo2


1. Department of Technology, Faculty of Architecture and Urbanism, University of Brasília , Brasília 70910-900, Brazil
2. Department of Civil Engineering and Environmental, Faculty of Technology, University of Brasília , Brasília 70910-900, Brazil


A nonlinear numerical model was developed to analyze reinforced concrete columns under combined axial load and bending up to failure. Results of reinforced concrete columns under eccentric compression tested to failure are presented and compared to results from a numerical nonlinear model. The tests involved 10 columns with cross-section of 250 mm × 120 mm, geometrical reinforcement ratio of 1.57% and concrete with compression strength around 40 MPa, with 3,000 mm in length. The main variable was the load eccentricity in the direction of the smaller dimension of cross-section. Experimental results of ultimate load and of the evolution of transverse displacements and concrete strains are compared with the numerical results. The estimated results obtained by the numerical model are close to the experimental ones, being suitable for use in verification of elements under combined axial load and bending.


Columns, reinforced concrete, combined axial load and bending, numerical analysis.

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