A Simple Model for the Fire Resistance of Axially-loaded Members According to Eurocode 3

摘要

A general model, i.e. a non-linear computer code, has been extensively used to determine the buckling load of axially-loaded members according to the hypotheses of Eurocode 3, Part 10 or Part 1.2. Two yield strengths, two buckling axes, six ultimate temperatures and 10 different lengths have been considered for 339 different steel H-sections. The numerical results have been statistically sorted and compared to the simple models presented in Eurocode 3, Part 10 and Eurocode 3, Part 1.2. The simple models that have been proposed up to now can lead to different safety levels when compared to the general model, the safety level depending mainly on the buckling length. A new proposal has thus been made for a simple model that systematically ensures a conservative result when compared to the general model.