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EnglishThis study aims to estimate the optimal properties of friction pendulum devices to seismically iso-late elastic structural systems under earthquake excitations having different characteristics in terms of frequency content. A two-degree-of-freedom model is considered to describe the isolated system behavior with a velocity-dependent model for the isolators. Specifically, a non-dimensional formulation of the governing equations of motion is presented in order to relate the characteristic parameters describing the isolator and structure properties to the response parame-ters of interest for the performance assessment. Several seismic artificial excitations, having fre-quency contents properly defined to describe respectively stiff, medium and soft soil conditions, are assumed. Finally, the optimum values of the friction coefficient that minimize the superstruc-ture displacements relative to the base mass as a function of the structural system properties, of the seismic input intensity and of the soil condition are computed.
SEISMIC PERFORMANCE OF BASE-ISOLATED STEEL STRUCTURES FOR DIFFERENT SOIL CONDITIONS / Castaldo, Paolo; Ripani, Marianela; Folino, Paula. - STAMPA. - 1(2017), pp. 345-356. ((Intervento presentato al convegno Le Giornate Italiane della Costruzione in Acciaio - The Italian Steel Days tenutosi a Venezia nel 28-30 settembre 2017.
| Titolo: | SEISMIC PERFORMANCE OF BASE-ISOLATED STEEL STRUCTURES FOR DIFFERENT SOIL CONDITIONS | |
| Autori: | ||
| Data di pubblicazione: | 2017 | |
| Abstract: | This study aims to estimate the optimal properties of friction pendulum devices to seismically is...o-late elastic structural systems under earthquake excitations having different characteristics in terms of frequency content. A two-degree-of-freedom model is considered to describe the isolated system behavior with a velocity-dependent model for the isolators. Specifically, a non-dimensional formulation of the governing equations of motion is presented in order to relate the characteristic parameters describing the isolator and structure properties to the response parame-ters of interest for the performance assessment. Several seismic artificial excitations, having fre-quency contents properly defined to describe respectively stiff, medium and soft soil conditions, are assumed. Finally, the optimum values of the friction coefficient that minimize the superstruc-ture displacements relative to the base mass as a function of the structural system properties, of the seismic input intensity and of the soil condition are computed. | |
| ISBN: | 9788885522008 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| CTA-2017-Seismic performance of base-isolated steel structures for different soil conditions.pdf | 1. Preprint / Submitted Version | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2683529
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