In this work, a simplified approach for the integrated design of the structural and the viscoelastic bracing-damper systems is presented. With reference to the viscous or viscoelastic dampers, the optimal integrated design is based on the possibility of achieving the seismic protection through the integration of the elastic lateral stiffness resources and the viscoelastic properties of a dissipative bracing-damper system. The optimal design is defined by determining the combination of the variables which minimizes a total cost function. Then a validation of the integrated procedure is performed by verifying that the dynamic response of an optimal single-degree-of-freedom integrated system achieves in average the expected performance displacement by considering a set of seven unscaled acceleration records compatible in average with the elastic spectrum relative to the life safety state, provided by the new Italian seismic code. Finally the extension of this procedure to a proportionally damped multidegrees- of-freedom integrated system, having a regular stiffness distribution in elevation, is developed on the basis of specific hypotheses by evaluating the different energy rates and the average displacement of the time history responses to the seven unscaled acceleration records and highlighting the effectiveness of the proposed integrated design methodology.

A simplified approach for the integrated design of viscoelastically damped structural systems / Castaldo, Paolo; Palazzo, B.. - ELETTRONICO. - (2013), pp. 1-10. (Intervento presentato al convegno XV Convegno ANIDIS - L'Ingegneria sismica in Italia tenutosi a Padova nel 30 giugno - 4 luglio 2013).

A simplified approach for the integrated design of viscoelastically damped structural systems

CASTALDO, PAOLO;
2013

Abstract

In this work, a simplified approach for the integrated design of the structural and the viscoelastic bracing-damper systems is presented. With reference to the viscous or viscoelastic dampers, the optimal integrated design is based on the possibility of achieving the seismic protection through the integration of the elastic lateral stiffness resources and the viscoelastic properties of a dissipative bracing-damper system. The optimal design is defined by determining the combination of the variables which minimizes a total cost function. Then a validation of the integrated procedure is performed by verifying that the dynamic response of an optimal single-degree-of-freedom integrated system achieves in average the expected performance displacement by considering a set of seven unscaled acceleration records compatible in average with the elastic spectrum relative to the life safety state, provided by the new Italian seismic code. Finally the extension of this procedure to a proportionally damped multidegrees- of-freedom integrated system, having a regular stiffness distribution in elevation, is developed on the basis of specific hypotheses by evaluating the different energy rates and the average displacement of the time history responses to the seven unscaled acceleration records and highlighting the effectiveness of the proposed integrated design methodology.
2013
9788897385592
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2664998
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo