000018981 001__ 18981
000018981 005__ 20170118182252.0
000018981 04107 $$aeng
000018981 046__ $$k2017-01-09
000018981 100__ $$aMarafi, Nasser
000018981 24500 $$aEffects of the Yufutsu Basin on Structural Response During Subduction Earthquakes

000018981 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018981 260__ $$b
000018981 506__ $$arestricted
000018981 520__ $$2eng$$aSedimentary basins tend to increase the intensity of ground-motions and the resulting damage to structures. Although current U.S. seismic hazard maps do not account for the effects of basins, most ground-motion prediction equations for crustal earthquakes include basin amplification terms, which amplify spectral acceleration at long periods. For most subduction earthquake GMPEs, these basin terms have not yet been developed. In addition, none of the available GMPEs account for the effects of basins on ground-motion duration and spectral shape. These omissions are particularly important in the Pacific Northwest of the United States, because this region has several deep basins, and even without considering basin effects, subduction earthquakes contribute a large portion of the overall seismic hazard, particularly at long periods. This paper quantifies the effects of the Yufutsu basin in Japan, which is similar to the deep basin underlying the Seattle region. For several subduction earthquakes of varying magnitude, the effects of basins are evaluated by comparing ground-motion recordings from stations located inside and near the Yufutsu basin. Basin effects are quantified using spectral acceleration, significant duration, and a new ductility dependent spectral shape intensity measure, SS a . The results of collapse analyses are reported for a set of well-studied archetypical building frame models, for which the ground-motion intensity at collapse is explained in terms of the three intensity measures. Finally, design strength amplification factors are developed with the aim of achieving collapse margin ratio for structures located inside basins during subduction earthquakes that are similar to those achieved by conventional structural designs.

000018981 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018981 653__ $$asedimentary basins, spectral acceleration, duration, spectral shape, structural collapse

000018981 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018981 720__ $$aMarafi, Nasser$$iBerman, Jeffrey$$iEberhard, Marc
000018981 8560_ $$ffischerc@itam.cas.cz
000018981 8564_ $$s578331$$uhttps://invenio.itam.cas.cz/record/18981/files/2629.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2629.
000018981 962__ $$r16048
000018981 980__ $$aPAPER