The effects of different opening spacing for cantilever castellated beam

Abstract

Steel is a material that is in great demand as a structural component because it is elastic, ductile, easy to form and joins by welding. This makes steel developed for high-rise and long-span structures. One method that can be used is castellated beams. Castellated beams are very suitable to be applied because they are relatively light, strong, and economical in materials. Castellated beams have a larger moment of inertia and lower specific gravity due to the addition of the profile cross-sectional height. The purpose of this study was to determine the effect of variations with different opening spacing (e) (80â mm, 100â mm, 120â mm) on the stiffness and load ultimate that can be carried. In this study, castellated beams were modeled with one of the joint being fixed and the other free with a span of 2 meters with an even distribution of opening web. The model was analyzed by static monotonic loading using finite element analysis with MSC Nastran and Patran software. From the results of this study, it was found that the greatest stiffness value was in the castellated beam with e=80mm, while the largest ultimate load value was on the castellated beam with e=100mm. Although the difference between the three specimens is not too significant.