Abstract
ABSTRACTThe corrugated web beams represent an alternative for material saving by decreasing the web thickness. By reducing the web thickness to values of 1.5 mm to 3 mm, the thermal massivity of the web is reduced, leading to faster temperature increase in fire situation. Moreover, since the flange thickness is unchanged compared to a common flat web beam, the temperature gradient between the two parts is higher in case of corrugated web beams.In a previous study of the authors, an ISO fire test was performed on five typologies of individual elements in a furnace, in which the temperature development in the corrugated web beams were monitored. Starting from the simple relations provided in EN 1991‐1‐2, an analytical model was proposed to consider the heat transfer by conduction from the web to the flange. Two of the individual elements tested were also studied numerically, using the general purpose computer code Abaqus. The temperatures obtained numerically follow closely the temperatures recorded during the three considered specimens.The present paper further validates the numerical model against the experimental results obtained for the other three specimens and presents a numerical study on the recently added typology of corrugated web beams with the web thickness of 6 mm.
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