SEISMIC RESPONSE SPECTRA HAVING UNIFORM MEAN FAILURERATES: SYSTEMS WITH DISSIPATING DEVICES AND WITHOUTTHEM

摘要

An approach is presented for calculating seismic response spectra with uniform annual failure rates,applicable to conventional systems as well to those provide with energy-dissipating devices. Theapproach is based on the analysis of single-degree-of-freedom systems with uncertain mechanicalproperties subjected to simulated ground motions. The effect of uncertainties related to thestructural stiffness, the yield displacement and the ductility capacity on the response spectra withuniform annual failure rate is analyzed. Based on this, the importance of taking into account theuncertainty implicit in the available ductility is underlined.