Abstract
AbstractAnalytical solutions are derived for the dynamic characteristics of base‐isolated shear buildings supported on laminated rubber bearings. The solution process takes into account the combined effects of the superstructure flexibility and the base raft inertia on the dynamic characteristics. A series of parametric studies is carried out and the effects of varying the stiffness and mass of the base‐isolation system on the frequencies and mode shapes are identified. Approximate solutions for the fundamental base‐isolated frequency and mode shape are obtained, which are suitable for use in the preliminary design of non‐rigid base‐isolated buildings.
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