| Abstrakt: |
Generally, the cellular beam structure (CBS) consists of prefabricated modules of cellular steel beams embedded in a multi-layered flooring system, which provides an innovative structure with many advantages, including reduced construction time and costs. The Southern African Institute for Steel Construction (SAISC) has developed a new cellular beam structure (CBS) for two or ten-story office buildings. Therefore, the present study uses Tekla structural designer software to describe the linear static analysis of G + 3 and G + 7 steel building frames with standard beam and cellular beams (CB). The primary variable in the analysis is the presence of cellular beam (CB) in steel frames of opening sizes 200 mm, 250 mm, and 300 mm. The study compares the behaviour of multi-storey steel structures using cellular versus standard beams under the inbuilt load combination for strength 1.35G + 1.5Q + 1.5RQ following Eurocode (EN 1990:2002). According to the linear static analysis results, deflection, major shear, and major moments in beams, axial force in columns, and lateral storey displacement of cellular beam structures are reduced compared to standard beam structures. Furthermore, cellular beams consistently offer reduced deflection compared to standard beams, and the diminishing impact of openings on axial force is consistent. The major shear, major moment, and lateral displacement remain relatively stable across varying storey heights, irrespective of beam size or opening dimensions. The results revealed that a multi-storey steel structure with a cellular beam has a higher stability and load-carrying capacity than a structure with a standard beam, especially at higher-storey heights. |
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