Investigation on the Behaviour of a Composite Floor Made of Cellular Beams in Fire Situation

Abstract

The main results from a numerical investigation on a composite floor made of cellular beams at elevated temperatures are presented. From a full-scale natural fire test, a 3D finite element model has been developed under ANSYS code to simulate the thermo-mechanical behaviour of a composite floor with cellular beams. The calibration of this numerical model is based on the measured material properties and temperatures. A good correlation between the test and the numerical simulation is observed, in terms of temperatures, deformed shape and deflections. The finite element model is then used in a parametric study varying bay size, mechanical load and fire resistance rate. The results from this parametric study are compared to those from an analytical method, highlighting the conservativeness of the latter.

Citation

Bihina, G., Zhao, B. and Bouchaïr, A. (2014), "Investigation on the Behaviour of a Composite Floor Made of Cellular Beams in Fire Situation", Journal of Structural Fire Engineering, Vol. 5 No. 2, pp. 175-188. https://doi.org/10.1260/2040-2317.5.2.175