Analysis and structural design of a building with multiple floors in composite steel and concrete structure

This paper consists of the structural design and analysis of a commercial office building with seventeen floors using a composite structure of steel and reinforcement concrete. The static and modal analysis of the structure was performed using SAP 2000 software. To this end, the initial design criteria were defined, and subsequently, the structural design was carried out, defining the structural system, the selection of the construction method and materials used, and the determination of the actions and combinations used. The steel decking slabs, dimensioned using the tables provided by the manufacturer, and the composite beams were verified in both the construction and final stages in accordance with current regulatory criteria, with consideration of the shear connectors in this final post-cure stage. For the analysis of the columns, geometric nonlinear analysis was incorporated to determine the stresses and displacements of the steel columns. The modal analysis of the structure provided the vibration modes, showing that the first and second modes have frequencies lower than 1 Hz, confirming the overall flexibility of the structure against wind actions. Finally, beam-beam and beam-column connections were designed. Thus, this article provides a detailed description of a practical application of the design and analysis of a composite steel and concrete structure, contributing to the advancement of technical and practical knowledge of design, technological innovation, structural safety and direct application in engineering projects.