000021521 001__ 21521
000021521 005__ 20170622131250.0
000021521 04107 $$aeng
000021521 046__ $$k2017-06-15
000021521 100__ $$aCastaldo, Paolo
000021521 24500 $$aSEISMIC RELIABILITY-BASED DESIGN OF PERFECTLY ELASTOPLASTIC STRUCTUTRES ISOLATED BY FPS

000021521 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021521 260__ $$bNational Technical University of Athens, 2017
000021521 506__ $$arestricted
000021521 520__ $$2eng$$aThis paper deals with seismic reliability of nonlinear structural systems equipped with friction pendulum isolators (FPS). The isolated structures are described by employing an equivalent 2dof model characterized by a perfectly elastoplastic rule to account for the inelastic response of the superstructure, whereas, the FPS behavior is described by a velocity dependent model. An extensive parametric study is carried out encompassing a wide range of elastic and inelastic building properties, different seismic intensity levels and considering the friction coefficient as a random variable. Employing a set of natural seismic records and scaled to the seismic intensity corresponding to life safety limit state for L’Aquila site (Italy) according to NTC08, the inelastic characteristics of the superstructures are designed as the ratio between the average elastic responses and increasing strength reduction factors. Incremental dynamic analyses (IDA) are developed to evaluate the seismic fragility curves of both the inelastic superstructure and the isolation level assuming different values of the corresponding limit states. Integrating the fragility curves with the seismic hazard curves related to L’Aquila site (Italy), the reliability curves of the equivalent inelastic base-isolated structural systems, with a design life of 50 years, are derived proposing seismic reliability-based design (SRBD) abacuses useful to define the FPS properties and superstructure properties.

000021521 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021521 653__ $$aseismic isolation; friction coefficient; seismic reliability; displacement ductility demand; strength reduction factor.

000021521 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021521 720__ $$aCastaldo, Paolo$$iFerrentino, Tatiana$$iPalazzo, Bruno
000021521 8560_ $$ffischerc@itam.cas.cz
000021521 8564_ $$s852198$$uhttp://invenio.itam.cas.cz/record/21521/files/16851.pdf$$yOriginal version of the author's contribution as presented on CD, section: [RS15] Performance-based earthquake engineering
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000021521 962__ $$r21500
000021521 980__ $$aPAPER