Abstract
This paper presents a practical optimum design method for base isolated buildings. In this study, first, we propose a simple cost function for a base-isolation story. Then, we present a two-stage optimization problem by dividing a base isolated building into two substructures, the base-isolation story and its upper and lower structures. This allows us to get a closed-form solution to the sub-optimization problem of base-isolation story. The use of the closed form solution makes the proposed method efficient. Design examples demonstrate the validity of the present method.
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