000019172 001__ 19172
000019172 005__ 20170118182302.0
000019172 04107 $$aeng
000019172 046__ $$k2017-01-09
000019172 100__ $$aAbrahamson, Norman
000019172 24500 $$aEvaluation of Ground-Motion Selection & Modification Methods Using Inelastic-Response Hazard Curves

000019172 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019172 260__ $$b
000019172 506__ $$arestricted
000019172 520__ $$2eng$$aPerformance assessments of the built environment using numerical simulation uses suites of ground motions which are selected, scaled and modified such that their energy content matches, or exceeds, that of a target spectrum, which is computed from a probabilistic seismic hazard analysis. There are many methods of selecting, scaling and/or modifying ground motions in engineering practice today. However, there is no objective methodology to determine whether the suite of ground motion corresponds to the same level of hazard and/or risk as the target spectrum. This paper presents a through methodology where different ground-motion suites are evaluated using hazard curves (annual rate of exceedance) for inelastic response parameters instead of the elastic models used in the PSHA. Specifically, the paper evaluates three different methods of ground-motion modification: simple amplitude scaling, tight spectral matching (at the record level), and mean spectral matching (at the suite-average level). While tightly-matched records have no dispersion in the elastic spectral response, the records obtained from the other two methods do. Also, the mean of the spectra of the amplitudescaled records are expected to be conservative in comparison to those obtained using the other two methods. These three different methods are, therefore, compared in the inelastic realm on the basis of the mean response of the suite as well as the dispersion of the results. The quantitative measure of comparison is based on probabilistic metrics rather than response measures.

000019172 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019172 653__ $$aseismic risk; seismic hazard

000019172 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019172 720__ $$aAbrahamson, Norman$$iMazzoni, Silvia
000019172 8560_ $$ffischerc@itam.cas.cz
000019172 8564_ $$s746921$$uhttps://invenio.itam.cas.cz/record/19172/files/3015.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3015.
000019172 962__ $$r16048
000019172 980__ $$aPAPER