Percorrer por autor "Rafagnin, Luan Paulo"
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- Isoladores Sísmicos em EdifíciosPublication . Rafagnin, Luan Paulo; Rouxinol, Gilberto Antunes Ferreira; Dalcanal, Paôla ReginaCivil engineering seeks to protect buildings against seismic action. Traditional design is based on material ductility, allowing controlled structural damage to occur in order to prevent building collapse. However, this approach results in inoperable structures and requires costly repairs after an earthquake. Base isolation emerges as a technological alternative that decouples the structure from ground motion and preserves its integrity. This dissertation aims to analyze the different available seismic protection technologies, their regulatory framework, and their practical insertion in the construction industry. The study classifies and evaluates the mechanical operation of passive, active, and semi-active systems. The research uses a qualitative and bibliographic review methodology. The work details the technical specifications, constitutive models, and qualification tests of commercial passive devices, such as high damping rubber bearings (HDRB), lead rubber bearings (LRB), and friction pendulum systems (FPS). In addition, the document addresses the design requirements and analysis methods stipulated by European regulations, especially Eurocode 8. The implementation of these technologies increases direct construction costs, with an initial rise ranging from 10.3% to 23.6%. Nevertheless, the building’s life cycle analysis demonstrates the economic viability of the solution. The total cost over the useful life becomes 2.5% to 4.8% lower than that of fixed-base structures. This savings is justified by an 82% to 84% reduction in costs associated with post-earthquake losses and by ensuring the operational continuity of the infrastructure