Comparative analysis of the flexural capacity of conventional steel beams with Castellated beams

Abstract

South Kalimantan, especially Banjarmasin City, has a thick layer of soft soil. Low bearing capacity is a major issue in planning the structure. Castellated beam is an innovation to create high structural capability with low weight. This research aims to gain the effect of the hexagonal opening angle on the bending capacity of the castellated beam. The research was conducted by numerical testing using ANSYS. This research compares the flexural capacity of conventional steel beams to the geometric effect of castellated beam with hexagonal opening angle variations. This research concluded that the geometric effect of a castellated beam can provide an increase in flexural capacity of about 8 to 19% compared to conventional steel beams. The optimum bending capacity is at the hexagonal opening angle of 45° to 50°. At the 60° opening angle, the castellated beam has decreased its flexural capacity.

Effect of Stiffener Variation on the Flexural Capacityof Castellated Beam Hexagonal Opening

“…The advantage of castellated steel beams is that it increases the height of the steel profile so that the profile inertia increases. Castellated steel beams hexagonal opening increase the flexural capacity by 8-19% and the maximum flexural strength occurs at an opening angle of 45°-50° (Barkiah and Darmawan, 2020). Research (Permadi, 2021) shows that castellated beams hexagonal opening with a profile cut width of 30-70 mm produce the same value of flexural capacity.…”