Investigating the behavior of composite steel–concrete beams with X-HVB shear connectors exposed to various fire temperature levels

Abstract Composite steel–concrete beams are widely used in modern construction due to their advantageous structural behavior and efficiency. The performance of these beams under fire is crucial for ensuring their fire resistance and structural integrity. This paper investigates the performance of co...
Ausführliche Beschreibung

Abstract Composite steel–concrete beams are widely used in modern construction due to their advantageous structural behavior and efficiency. The performance of these beams under fire is crucial for ensuring their fire resistance and structural integrity. This paper investigates the performance of composite steel–concrete beams with X-HVB shear connectors after exposure to different levels of temperature, considering the effect of the direction of the profiled steel plate to the steel beam length. Experimental work was conducted using eight composite beam specimens to assess their load carrying capacity, stiffness, ductility and energy absorption under varying temperature degrees and corrugated steel plate orientations (parallel or transverse to the beam length). The results indicate that the load carrying capacity, stiffness, and ductility of the composite beam specimens decrease with increasing exposure temperature level. Furthermore, the orientation of the profiled steel plate was found to significantly influence the beam’s performance. By examining different temperature levels and the influence of corrugated steel plate orientation, valuable insights are gained regarding the fire resistance and structural performance of these beams. These insights can inform the design and implementation of composite structures, ensuring their safety and durability in fire-prone environments. Ausführliche Beschreibung