Abstract
This paper presents the results of experimental and numerical studies of the fundamental response of normal concrete (NSC) columns under fire exposure with pre concentric load. The present study aims to investigate experimentally the behavior of reinforced concrete columns exposed to fire flame with concentric axial load, post-fire behavior under the effect of axial eccentric load. Also, it aims to give a comprehensive account of the fire effects on the ductility and stiffness of these columns. The test results indicated that columns lost about (47.60-51.4) % of bearing capacity after exposure to fire at 500 °C with one hour. Moreover, increased decrease in residual bearing capacity significantly with increasing load level applied during fire exposure. Also, Non-linear finite element (FE) analyses of postfire exposed RC columns with axially load using the ABAQUS computer program is discussed in this paper.
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