Temperature Analysis On Fire Resistance
Experiments Of Partially Encased Beams
Author(s)
P. A. G. Piloto, A. B. R. Gavilán & L. M. R. Mesquita
Abstract
Twelve fire resistance tests, grouped in four series, were developed using
partially encased beams (PEB) without concrete slab, for different load level and
shear connection. PEB were built with standard hot rolled IPE100 profile and
reinforced concrete between flanges. Fire resistance was determined for standard
ISO834 nominal heating curve, using small fire resistance furnace and portal
frame. Temperature was measured in three different sections along PEB length,
for three different materials (steel, concrete and reinforcement). Average
temperature in each section and material was compared to the average over
length temperature. Each series presented similar results, with good
reproducibility. Special focus was given to critical temperature. The maximum
temperature difference between sections S1, S2, S3 and the average element
length temperature is smaller than 3.2% for test series 1. For test series 2, 3 and 4
the maximum temperature difference is smaller than 5.1%, 6.3% and 11.2%,
respectively. Temperature is not uniform in cross-section. After the initial
heating stage, temperature revealed a constant difference of approximately 150ºC
between temperatures measured inside and outside, defining two main
temperature evolutions. Temperatures measured outside revealed always higher
temperature level.
Keywords: partially encased beams, fire resistance, critical temperature.
Keywords
partially encased beams, fire resistance, critical temperature
Related Book
Other papers in this volume
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