Citation

Dimia MS, Guenfoud M, Gernay T, Franssen JM. J. Fire Prot. Eng. 2011; 21(4): 245-263.

Copyright

(Copyright © 2011, SAGE Publishing)

DOI

10.1177/1042391511423451

PMID

unavailable

Abstract

A study has been performed on the collapse of reinforced concrete columns subjected to natural fire conditions during and after the cooling phase of the fire. The aim is, first, to highlight the phenomenon of collapse of concrete columns during and after the cooling phase of a fire and then, to analyze the influence of some determinant parameters. The main mechanisms that lead to this type of failure are found to be the delayed increase of the temperature in the central zones of the element and the additional loss of concrete strength during the cooling phase of the fire. A parametric analysis considering different fires and geometric properties of the column shows that critical conditions with respect to delayed failure arise for short-duration fires and for columns with low slenderness or massive sections.

Language: en