Steel-concrete composite slabs provide an excellent flooring solution, leveraging the key properties of two materials: steel, used for the decking, and concrete, which may be reinforced or not. Due to the impossibility of ensuring full interaction between the two materials, the design is primarily governed by horizontal shear-bond strength, which must be experimentally assessed. While the procedure for evaluating actual resistance has been extensively studied and is now well-established, further investigations are still required for the estimation of flexural stiffness. At the serviceability limit state (SLS), slab deformability -and consequently, also the vibration modes- are critical factors influencing the overall design. In this context, this paper presents a discussion about the deformability of steel-concrete composite slabs. Specifically, based on experimental tests on slabs of varying lengths (2000, 2400, 2800, 3200, and 3600 mm), under monotonic and cyclic loads, the influence of cracking on the flexural response is discussed. Finally, a numerical finite element strategy is briefly presented to capture their structural response.
DEFORMABILITY OF STEEL-CONCRETE COMPOSITE SLABS
M. Simoncelli
2025-01-01
Abstract
Steel-concrete composite slabs provide an excellent flooring solution, leveraging the key properties of two materials: steel, used for the decking, and concrete, which may be reinforced or not. Due to the impossibility of ensuring full interaction between the two materials, the design is primarily governed by horizontal shear-bond strength, which must be experimentally assessed. While the procedure for evaluating actual resistance has been extensively studied and is now well-established, further investigations are still required for the estimation of flexural stiffness. At the serviceability limit state (SLS), slab deformability -and consequently, also the vibration modes- are critical factors influencing the overall design. In this context, this paper presents a discussion about the deformability of steel-concrete composite slabs. Specifically, based on experimental tests on slabs of varying lengths (2000, 2400, 2800, 3200, and 3600 mm), under monotonic and cyclic loads, the influence of cracking on the flexural response is discussed. Finally, a numerical finite element strategy is briefly presented to capture their structural response.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
