Abstract:
in this study span to depth ratio, loading type, shear stud configuration and shear stud diameters
are the main variables under fire loading. FEA result shows that loading type of the beam has a
major impact on strength of composite beams under fire loading compared to span to depth ratio,
configuration of shear studs and diameter of shear studs. To be accurate, increasing the span to
depth ratio of the beam by 11.02% decreased the strength of composite beams by 7.65%, changing
the loading type from fire to static loading increased the strength of the beam by 8.02%, a change
in the configuration of shear studs of the beam from single to double and staggered, strength of a
composite beam decreased by 3.32% and 5.31% respectively. Moreover, an increase in the
diameter of shear connectors by 64.29% strength of composite beam increased by 2.85%. FEA
result proved that the span to depth ratio of the beam has a major impact on the stress of composite
beams under fire loading compared to loading type, configuration of shear studs and diameter of
shear connector. To be accurate, increasing the span to depth ratio of the beam by 11.02% reduced
the stress of composite beams by 5.38%, changing the loading type from fire to static loading
increased the stress of the beam by 1.69%, a change in the configuration of shear studs of the beam
from single to double and staggered manner increased the stress of composite beams by 0.018%
& 1.61%. In addition, an increase in the diameter of shear connectors by 64.29% increased by 0.0061%.
