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The response of structural steel columns to high temperatures is investigated. Both numerical prediction and experimental testing are carried out. The material properties of the steel are obtained from a series of tensile coupon tests at various temperatures and two different strain rates. A high strain rate was used to determine instantaneous material properties, while a low strain rate allowed some creep strain to be included implicitly. These strain rate dependent material properties are incorporated in a finite element analysis (FEA) to simulate the results of stub column buckling tests, conducted at range of temperatures up to 600°C. Good agreement has been obtained between the numerical simulations and the tests.

Numerical Predictions And Experimental Observations Of The Structural Response Of Steel Columns To High Temperatures