A numerical model, in the form of a computer program, for evaluating the fire resistance ofinsulated wide-flange steel columns is presented. The three stages associated with the thermal andstructural analysis in the calculation of fire resistance of columns is explained. The use of the computerprogram for tracing the response of an insulated steel column from the initial pre-loading stage tocollapse, due to fire, is demonstrated. The validity of the numerical model used in the program isestablished by comparing the predictions from the computer program with results from full-scale fire tests.Details of fire tests carried out on wide-flange steel columns protected with ceramic fibre insulation,together with results, are presented. The computer program can be used to evaluate the fire resistance ofprotected wide-flange steel columns for any value of the significant parameters, such as load, sectiondimensions, column length, type of insulation, and thickness of insulation without the necessity of testing.
Key Words
fire resistance; computer program; high temperature; wide flange steel columns; insulated columns; contour protection.
Address
V.K.R Kodur, Institute for Research in Construction, National Research Council, Ottawa, CanadaB.A. Ghani, Department of Mechanical Engineering, University Technology of Malaysia, MalaysiaM.A. Sultan and T.T. Lie, Institute for Research in Construction, National Research Council, Ottawa, CanadaM. El-Shayeb, Department of Mechanical Engineering, University Technology of Malaysia, Malaysia
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