Predicted fire behaviour of steels and concrete structures

Analytical modelling has opened the door for fire behaviour prediction of not only building materials as concrete and steel but akso of quite complicated concrete structures in general. This paper reflects some of the progress made within the field. A behaviour model of steel is used for coupling results from steady state and transient sate tests. A recently developed procedure is shown on how to interpret and make such results comparable for practical use. The computational capability and realiability are illustrated for TASEF-2 temperature program and CONFIRE structural program developed at Lund Institute of Technology (LTH), Sweden and Norwegian Institute of Technology (NTH), Norway, respectively. The success of computation is decisively dependent on reliable material models. The influence of axial restraint on failure time is exemplified. (Less)