ESTUDO DO COMPORTAMENTO ESTRUTURAL DE VIGAS CASTELADAS DE AÇO EM PADRÃO LITZKA COM ABERTURAS HEXAGONAIS E OCTOGONAIS

Resumo

Castellated steel beams (CSB) are manufactured from the zigzag cut of the web of the I-sections, whose
halves are displaced and welded, making the beam expand in height, without changing the profile mass. Changing
dimensional cutting parameters makes it possible to create several geometric patterns of castellated beams. The
study in question addresses the addition of expansion plates to the Litzka CSB, further increasing the height of the
profile, and consequently the moment of inertia and the stiffness of the section, thus enabling the execution of
larger spans. The CSB has an architectural and functional appeal, due to their light appearance and the possibility
of passing ducts through the alveoli. In order to compare the results obtained, the cross section was varied, ranging
between supports, types of loading and the size of the expansion plate for performing numerical analysis using the
finite element method. The numerical model considers the initial geometric imperfections, residual stress and
physical nonlinearities derived from the manufacturing process. The results show the comparison of the structural
behavior and the resistant capacity of CSB with different characteristics.