A study on effects of base isolators and dampers on steel structures design
Keywords:steel frame, base isolator, plumbic damper, frictional damper, time history analysis
Base isolation is a design method for reducing response of a structural system under ground motion. With progress of science and technology in recent years, enhancing safety and performance of buildings during the earthquake, is exceedingly considered important. Today there are two methods for resisting earthquake forces: first, improvement of structural seismic capacity by for example using of lateral resistant systems such as moment frames and shear walls and bracings. Second, reducing the structural seismic demand by base isolation system.In this paper we investigated the effect of base isolation system on behavior of a 10 stories steel frame, in comparison of using ordinary systems. We studied some cases such as base shear, period, drift and structural member sections.
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