On the optimal design of base isolation devices

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The paper deals with the optimal design of a base isolation system for a given structure subjected to seismic loads. In particular, an appropriate minimum displacement seismic protection device optimal design formulation is proposed for an assigned elastic perfectly plastic steel frame constrained to behave in conditions of elastic shakedown. The chosen base isolation device is constituted by elastomeric isolators. Suitable combinations of fixed and seismic loads are considered. According to the unrestricted shakedown theory, the seismic input is given as any load history appertaining to a suitably defined seismic load admissibility domain. The relevant dynamic structural response is obtained by means of a modal analysis making reference to the non-classically damped structural model. Some numerical applications conclude the paper.
Lingua originaleEnglish
Numero di pagine0
Stato di pubblicazionePublished - 2013


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