A Numerical Study on 3D Finite Element Model of Steel-Concrete Composite Beams with Trapezoidal Steel Decking

Abstract

Modern construction frequently employs steel-concrete composite beams (CBs), welding headed shear stud connections utilising profiled steel sheeting (PSS) to guarantee full or partial composite action across the beam and composite slab. Our study focuses on CBs having trapezoidal steel decking. CBs fail in several ways due to complicated component interactions. Finite element (FE) analysis can grasp the fundamental conduct of these beams. So, previous FE models simplified complex interactions, like those between shear studs and concrete, by making assumptions. Therefore, some failure modes remain unaccounted for by these FE models, and the forces acting on the studs and also PSS remain unquantified. This work aims to create a thorough 3D FE model for CBs having trapezoidal steel decking. The model simulates shear stud and PSS fractures, concrete tensile and compressive damage, and other component interactions. The full-extent load-deformation curves for the CBs and the shear force-slip (SFS) connection for the embedded shear studs are exactly what our FE model says they will be. The FE model accurately and reliably predicts the actions of steel-concrete CBs having trapezoidal steel decking, matching a vast array of test data from the literature.