Dimensionamento de elementos em estrutura mista de aço e concreto

Abstract

Among the structural systems, those formed by composite elements of steel and concrete present some advantages over the usual systems, as it takes advantage of the best properties of the most used two materials in construction, steel and concrete. The present study has as objective to design the elements of a commercial building of eight floors in steel and concrete structure using current standards. After presenting the composite elements succinctly, it was made the calculation of action effects and design of structural elements of the building-example. For the slabs, the composite slab used is the steel deck in all floors, its dimensioning was given through the supplier's catalog and, later, the normative verifications were made for the construction stage and final stage, showing that the design by the supplier's catalog is conservative. For the beams was used the simply supported composite beams system with partial interaction, where the type I laminate profile was chosen that the final stage and construction stage checks. For some beams, the verification of the construction stage were determinant for the choice of the profile. Due to the high vertical deflection presented in the construction stage, the use of precambering was adopted to avoid compromising the vertical deflection in the final stage. The columns has rigid joints that resists the wind actions, the type of composite column used was the one partially encasement with concrete, and for the steel profile was used the CS type. It was verified to by the calculation combined compression and uniaxial bending model II and did not present efficient results, although important verifications such as the global stability and horizontal displacements were not made. The uses of some elements, such as beams and slabs, were adequate for the building under study.