Analysis of cold-formed steel truss and prefabricated concrete slab composite floor system

Resumo

Steel and concrete composite floor systems improve the resistance capacity and flexural stiffness. Stud-
ies on composite floor of buildings available in the literature consider, for the most part, open steel cross sections

and solid or steel deck reinforced concrete slabs. The present work is based on the results obtained in an ex-
perimental campaign carried out by the research group on steel and composite construction at the Laboratory of

Structures and Materials from COPPE /UFRJ, and proposes the validation of a numerical model based on the
Finite Element Method (FEM), in order to improve the knowledge of the structural behavior of the construction
system. This work aims to extend the original investigation of the composite structural system proposed and tested
by Luiz Alberto Leal (doctoral thesis in 2019), associating lattice girder in cold-formed steel members (CFS) and
composite unidirectional prefabricated concrete slab, for which there are few numerical and experimental studies.

In this context, the present work performs the FEM-based numerical modeling, calibrated with the help of exper-
imental results, consisting of CFS trussed girders and unidirectional slabs, combined with innovative thin-walled

perfobond (TWP) shear connectors.