Ultimate strength prediction of steel–concrete composite cellular beams with PCHCS

• A finite element model of composite cellular beams with PCHCS was developed. parametric study carried out by geometrical non-linear analyses. Symmetric and asymmetric section were considered. The predominant failure mode the web post buckling. strength not limited only beam. This paper aims to predict ultimate behavior steel–concrete using precast hollow core slabs. is developed analysis. out, considering symmetric sections key parameters such as web-post width opening diameter are varied, well presence concrete topping. total 120 analyses performed. results compared typical slab models cast in-situ concrete. For symmetrical sections, slabs, although some observations occurred formation plastic mechanism, combination mechanism buckling accompanied shear connector rupture. In both cases, asymmetrical excessive cracking observed in upper part slab. cases where end-post greater than web-post, there damage at region slab/concrete topping, close support. numerical when showed efficiency structural behavior. imply that steel beam, but also, slab, due resistance stress.