Abstract
The creep buckling behavior of steel tee columns was studied experimentally and theoretically at high temperatures. The tee column specimens with width-to-thickness ratio b/t=10 were subjected to various constant load with eccentricities at high temperatures from 500 to 550℃, and all of them failed by local buckling of the tee stem. The lateral deflection and contraction curves of the columns versus time were obtained and it was clarified how the load, eccentricities and temperatures affected the creep buckling behavior of tee columns. The test results were also com-pared with the values of nonlinear analysis by the finite element method which adopted the mechanical model of structural steel at high temperature propesed by authors. Consequently the validity and efficiency of the present analytical method were examined by the experimental results.
