A SIMPLE-MODEL FOR THE FIRE RESISTANCE OF AXIALLY LOADED MEMBERS - COMPARISON WITH EXPERIMENTAL RESULTS

A general model i.e. a non linear computer code, has been extensively used to determine the buckling load of axially loaded members, conside ring that the material model behaves at elevated temperatures accordin g to the hypotheses of Eurocode 3 Part 1.2, and the main results of th is numerical investigation ave summarised in this paper. The main para meters and the results of 59 experimental tests found in the literatur e ave reported, as well as the results of 21 original tests made withi n this research project. Those test results are used to evaluate the s everity factor of the analytical formula deduced from the numerical si mulations. This factor is chosen in order to obtain an analytically ca lculated ultimate load which is, in the average, the same as the exper imental load. The ultimate load or ultimate temperature can be determi ned by the proposed analytical formula or directly by interpolation in tables which give the ratio between the ultimate load and the plastic load at room temperature. Copyright (C) 1996 Elsevier Science Ltd.