Comparison of a Three-Dimensional Numerical Model for Fire Resistance of Axially Loaded Concrete Filled Steel Tubular Columns with Eurocode 4

Abstract

In this paper, the behaviour of slender axially loaded square and circular CFT columns exposed to fire is modelled using the finite element analysis package ABAQUS. A realistic sequentially coupled nonlinear thermal-stress analysis is conducted for a series of columns available in the literature. By means of this model, a comparison between fire resistance simulations results and experimental tests found in literature is made. Similarly, simulations results are compared to the Eurocode 4 simplified calculation model predictions. Comparisons show that whereas Eurocode 4 predictions are very conservative for both circular and square section CFT columns, the results obtained from the developed numerical model are much more realistic.

Citation

Espinós, A., Ibáñez, C., Romero, M. and Hospitaler, A. (2011), "Comparison of a Three-Dimensional Numerical Model for Fire Resistance of Axially Loaded Concrete Filled Steel Tubular Columns with Eurocode 4", Journal of Structural Fire Engineering, Vol. 2 No. 2, pp. 67-79. https://doi.org/10.1260/2040-2317.2.2.67