Effect of local instability on fire response of steel beams

PSU Research Review

Mohannad Z. Naser¹  Venkatesh Kodur¹ 

[1] Department of Civil and Environmental Engineering, Michigan State University, East Lansing, Michigan, USA;

关键词: Civil engineering;    Structural engineering;    Structural fire engineering and diagnostics;   

DOI  :  10.1108/PRR-05-2017-0025

来源: DOAJ

【 摘 要 】

Purpose – This purpose of this paper is to quantify the effect of local instability arising from high shear loading on response of steel girders subjected to fire conditions. Design/methodology/approach – A three-dimensional nonlinear finite element model able to evaluate behavior of fire-exposed steel girders is developed. This model, is capable of predicting fire response of steel girders taking into consideration flexural, shear and deflection limit states. Findings – Results obtained from numerical studies show that shear capacity can degrade at a higher pace than flexural capacity under certain loading scenarios, and hence, failure can result from shear effects prior to attaining failure in flexural mode. Originality/value – The developed model is unique and provides valuable insight (and information) to the fire response of typical hot-rolled steel girder subjected to high shear loading.

【 授权许可】

Unknown