Experimental bending tests of partially encased beams at elevated temperatures

PEB attained lateral torsional buckling as deformed failure mode at the ultimate limit state, except for the case of PEB tested at 600 °C that results in a plastic hinge failure. The bending resistance was determined for the maximum load event (Fu) and for the displacement limit corresponding to L/30 (FL/30) and compared with the results of the Eurocode 3 part 1-2 simple calculation method, considering an adaptation of its formulae to PEB. The expected reduction in bending resistance at elevated temperature is in good agreement with the experimental reduction factor, when the deformation criterion is used.