Naslov
Testing the acceptability of different creep strain calculation models in structural fire analysis

Autori
Torić, Neno ; Sun, Rui Rui ; Burgess, Ian

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Progress on Safety of Structures in Fire / Li, Guo-Qiang ; Kodur, Venkatesh ; Jiang, Shou-Chao ; Jiang, Jian ; Chen, Su-Wen ; Lou, Guo-Biao - Shanghai : Tongji University Press, 2014, 895-902

ISBN
978-7-5608-5494-6

Skup
8th International Conference on Structures in Fire

Mjesto i datum
Šangaj, Kina, 11.06.2014. - 13.06.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Steel; fire; creep strain; numerical model

Sažetak
This paper investigates the accuracy of a selection of creep models in predicting the structural behaviour of steel under various heat rates and load ratios. Most of the commonly-used stress strain laws of steel for structural fire engineering have already implicitly considered the creep strain, however, these considerations cannot adequately capture the effects of the stress level, heat rate and strain rate on the creep strain of the steel. In this paper, several available creep models were implemented into the finite element code-Vulcan and the acceptability of these creep models was tested by the comparisons with published experimental results. In order to introduce an explicit creep model into the structural fire analysis, the substantial implicit creep should be removed from the initial material laws. A practical way to obtain the creep-free material curves from established material laws is proposed and it has been demonstrated that the combination of an creep-free stress strain curve with an explicit creep model can improve the accuracy of the prediction of the creep strain of steel in fire.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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