Issue 46

S. Motsa et alii, Frattura ed Integrità Strutturale, 46 (2018) 124-139; DOI: 10.3221/IGF-ESIS.46.13

The force – displacement diagrams for the protected models, start with an initial stiffer branch, followed by a horizontal part attributed to the fact that fire passes on steel, then an ascending part, until the final, almost horizontal ending depicting failure of the structure. Similar temperature and plastic strain distributions, as the ones presented in Figs. 11, 12, are obtained from these simulations.

a) b) Figure 11 : a) Temperature ( o C) distribution at the protected structure at the a) 40 th , b) 80 th minute (end of analysis), of the fire event

a) b) Figure 12 : Equivalent plastic strain distribution at the protected structure at the a) 40 th b) 80 th minute (end of analysis), of the fire event

Figure 13 : Force – displacement diagrams for the unprotected and the fire protected structure (one fire protection board) with alternative thermal scenarios

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