000011924 001__ 11924
000011924 005__ 20141205160001.0
000011924 04107 $$aeng
000011924 046__ $$k2008-10-12
000011924 100__ $$aTrombetti, Tomaso
000011924 24500 $$aCorrelations Between the Displacement Response Spectra and the Parameters Characterising the Magnitude of the Ground Motion

000011924 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011924 260__ $$b
000011924 506__ $$arestricted
000011924 520__ $$2eng$$aWithin a Displacement-Based Seismic Design approach, the seismic input is described through displacement design spectra. Until now, these spectra are commonly obtained from the corresponding pseudo-acceleration design spectra, widely used in a Force-Based Seismic Design approach, and are therefore affected by uncertainties regarding the schematization of pseudo-acceleration spectra. In this paper, the relationships between earthquake ground motion parameters and displacement spectra have been faced starting afresh to provide an updated schematization of the spectra which consciously accounts for the most representative ground motion parameters. First, in order to identify the fewest independent parameters which best describes the seismic input, for each record, different earthquake ground motion parameters have been computed and compared to each other through correlation analyses. The results indicate that the parameters Peak Ground Acceleration (PGA), Peak Ground velocity (PGV) and Peak Ground Displacement (PGD) are both necessary and sufficient to exhaustively characterize the seismic input. Second, on the basis of the well-established “tripartite” earthquake elastic response spectrum, analytical relationships have been derived between the PGA, PGV and PGV parameters and the average amplification factors of the structural response. Finally, simple formulas are proposed for the displacement spectrum which account for the PGA, PGV and PGD. Comparison with common code displacement spectra which accounts for the PGA only show that, to best capture the trend of real earthquake spectra and to avoid both over- and under-estimations, it is fundamental to take into account at least the PGV (if not also the PGD).

000011924 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011924 653__ $$aearthquake ground motion parameters, displacement spectra, linear regression, “tripartite” earthquake response spectrum, peak ground acceleration, peak ground velocity 

000011924 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011924 720__ $$aTrombetti, Tomaso$$iSilvestri, Stefano$$iGasparini, Giada$$iRighi, Marco$$iCeccoli, C.
000011924 8560_ $$ffischerc@itam.cas.cz
000011924 8564_ $$s247466$$uhttps://invenio.itam.cas.cz/record/11924/files/02-0130.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 02-0130.
000011924 962__ $$r9324
000011924 980__ $$aPAPER