Rocking Damage-Free Steel Column Base with Friction Devices: Design, Numerical and Experimental Evaluation (original) (raw)

Conventional seismic-resistant structures, such as steel moment resisting frames, are designed to experience significant inelastic deformations under strong earthquakes. Inelastic deformations result in damage of structural members and residual interstory drifts, which lead to high repair costs and disruption of the building use or occupation. The aforementioned socio-economic risks highlight the need for widespread implementation of minimaldamage structures, which can reduce both repair costs and downtime. Examples of such structures include steel frames equipped with self-centering beam-column connections, structural fuses, passive energy dissipation devices, self-centering braces, and others. These earthquake-resilient steel frame typologies have been extensively studied during the last decade but little attention has been paid to the behavior of their column bases. Conventional steel column bases are susceptible to experience non-repairable damage significantly affecting the res...

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