Larissa Degliuomini Kirchhof - Sistemas SET - USP

ABSTRACT
KIRCHHOF, L.D. (2004). A contribution to the study of simply-supported composite steelconcrete
beams in ambient temperature and in fire situations. São Carlos, 2004. 143p.
Dissertação (Mestrado) – Escola de Engenharia de São Carlos, Universidade de São Paulo.
Composite steel-concrete beam have been commonly considered in steel-framed building
used in civil engineering, not only in Brazil but also in the worldwide context. The
efficiency of this structural element is directly related with the type of interaction between
steel beam and concrete slab, which is assured using metallic elements called shear
connectors, with the objective to transfer longitudinal shear forces from concrete slab to
steel beam, in the interface, and avoid the vertical separation between concrete slab and
steel beam (uplift).In this sense, the aim of the present work is to carry out a bibliographical
review about composite steel-concrete beam, as well as propose a three-dimensional nonlinear
procedure for modeling only full shear connection in composite beam. The threedimensional
numerical models constructed must be capable of predicting de response of
composite beam, in ambient temperature an also in elevated temperatures (fire conditions).
The computer program ABAQUS® 6.3-1, based on Finite Element Method, was used to
analyze the numerical modeling. The accuracy of the three-dimensional numerical models
are demonstrated by analyses of the results obtained with the models which are compared
with the experimental results, obtained and presented by others researches.
Keywords: composite structures, steel-concrete composite beams, numerical analysis, fire
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