Studi sperimentali per la caratterizzazione di dispositivi antisismici hanno evidenziato come alcune specifiche siano difficili da realizzare e di discutibile significatività per la progettazione. Normative esistenti e modelli di calcolo, basati su forti semplificazioni del comportamento dei dispositivi comunemente utilizzati, non tengono conto della variabilità dei parametri prestazionali, evidenziata sperimentalmente. È necessario l’aggiornamento delle norme ma anche rendere consapevoli i progettisti dei limiti delle modellazioni semplificate
Design considerations associated with the response of seismic isolators and real scale energy absorbers
Few observations obtained from extensive experimental programs for the characterization of anti-seismic devices are proposed hereafter. Specifically, few current code requirements, originally intended for the acquisition of fundamental characteristics of performance, proved difficult to be implemented and of questionable significance for the design phase of a seismic isolation application. In particular, for commonly used devices as elastomeric and friction-based isolators, the experimentally validated variation of performance parameters is often not addressed in existing codes and typically neglected in structural models, based on extreme simplification of the device behaviour. The goal of this paper is to suggest an update to specific codes but particularly to solicit the designer’s awareness against oversimplification in the modelling phase of the device performance