Análisis comparativo entre sistemas estructurales sismo resistentes para edificios utilizando sistemas combinados con pórticos, muros o diagonales en hormigón y acero

Abstract

The occurrence of frequent seismic events has been one of the reasons for the study of new structural systems able to adequately address the challenges of building in this environment. This project contains a structural analysis and design of earthquake resistant buildings systems. The earthquake resistant buildings systems studied are Special Moment Frames, Special Concentrically Braced Frames, Concrete Shear Walls and Steel Plate Shear Walls. The systems were applied to buildings that would be located in Cuenca, Ecuador, and intended for residential use. For study methodology, the following codes were used as bases: AISC 341-10 for systems with structural steel, ACI 318-11 for systems with concrete, NEC-11 for load conditions. For modeling of different systems, the finite element software Etabs 2013 was used. To perform a comparative analysis of the above systems, the variables that are usually employed in buildings’ designs were considered, such as, height (number of floors) and clear spans between columns. Additionally, an economic and technical analysis comparing the above systems was considered. The variations of stories used in the buildings were four, eight and twelve stories. The clear spans between columns were six and nine meters in length. Budgets for different buildings were calculated according to the corresponding system. Together with the results of the design, they were useful in the economic and technical comparison, helping to highlight the advantages or disadvantages of each system.