Beams with corrugated web at elevated temperature, analytical and numerical models for heat transfer

10.29: The thermal response of corrugated web beams subjected to fire

“…2.c), closely follow the temperatures recorded during the test for specimens WTB750-250x12 and WTC500-300x20, see Fig. 3a,b [5]. Fig.…”

“…In order to highlight the thermal response of the CWB's, a fire test was performed on isolated elements, in a furnace at the testing laboratory Veselí Nad Lužnicí [5]. For further distinguish of the web thickness, the specimen name with letter A, B and C are related to 2, 2.5, and 3 mm respectively.…”

“…A reduced web thickness of 2 mm was tested with a flange thickness of 15 mm (WTA 500-200x15), and one specimen was tested with a web thickness of 2.5 mm and a flange thickness of 12 mm (WTB750-250x12). Details about the fire test are presented in Vacha et al [5] and supporting documents of the analytical model [9], [10]. The temperatures along the web height were monitored according to Fig.…”

“…3. Web temperature a) WTB750-250x12; b) WTC500-300x20 [5] In order to validate the FE model, the numerical analysis of specimens WTC1000-300x20, WTA500-200x15 and WTC1000-200x12 was further performed. The evolution of the temperatures for the mid-height and for the lower part of the web, are presented together with the temperatures determined in the test in Fig.…”

“…The fire experiment performed in Linz [4] was carried out in order to monitor temperature development in beams and evaluate their performance under mechanical load, but supplementary data would still be needed for verification and validation. In a previous paper [5], the authors studied the temperature distribution over the cross-section of a beam with sinusoidal corrugation of the web, by means of experimental, analytical and numerical analyses. The analytical model, based on the simple relations provided by the fire design codes, enables the conductive heat transfer and radiative heat transfer between the cross-section parts.…”