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Earthquakes and Structures Volume 3, Number 3, June-August 2012 , pages 315-340 DOI: https://doi.org/10.12989/eas.2012.3.3.315 |
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Base-isolated building with high-damping spring system subjected to near fault earthquakes |
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Miguel Eduardo Tornello and Mauricio Sarrazin
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| Abstract | ||
| There are many types of seismic isolation devices that are being used today for structural control of earthquake response in buildings. The most commonly used are sliding bearings and elastomeric bearings, the latter with or without lead core. An alternative solution is the use of steel springs combined with viscoelastic fluid dampers, which is the case discussed in this paper. An analytical study of a three-story building supported on helical steel springs and viscoelastic fluid dampers, GERB Control System (GCS), subjected to near-fault earthquakes is presented. Several earthquakes records have been obtained by the acceleration network installed in the isolated building and in its non-isolated twin since they were finished. These experimental results are analysed and discussed. The aim is to show that the spring-based system can be an alternative for base isolation of small building located near active faults. | ||
| Key Words | ||
| building base isolation; spring bearing; viscous damping; near fault earthquakes | ||
| Address | ||
| Miguel Eduardo Tornello: Regional Center of Technological Developments for Construction, Seismology and Earthquake Engineering (CeReDeTec.), National Technological University, Rodriguez 273 (5500), Mendoza, Argentina; Mauricio Sarrazin: Department of Civil Engineering, University of Chile, Beauchef 850, Santiago (8370448), Chile | ||