000018216 001__ 18216
000018216 005__ 20170118182213.0
000018216 04107 $$aeng
000018216 046__ $$k2017-01-09
000018216 100__ $$aTsitos, Antonios
000018216 24500 $$aInfluence of Cyclic Degradation on Inelastic Seismic Demands in Steel Moment Frames

000018216 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018216 260__ $$b
000018216 506__ $$arestricted
000018216 520__ $$2eng$$aThis paper assesses the influence of the cyclic strength and stiffness degradation on the global and local inter-storey drift demands in moment resistant steel frames (MRF) designed according to Eurocode 8. The underlying question that motivated this research is whether refined structural modelling techniques such as those able to simulate steel degradation phenomena are relevant at the most typical design level, in order to satisfy the No-Collapse requirements imposed by the seismic code. For this purpose a set of low-rise and mid-rise MRFs, designed to European guidelines, were subjected to incremental dynamic analyses (IDA) using a suite of 56 far-field ground motion records. Two main modelling approaches were considered: (i) distributed plasticity modelling with fibre sections and elasto-plastic hardening material, and (ii) concentrated plasticity modelling with plastic hinges characterized by a constitutive model that includes deterioration effects. The results obtained from this set of analysis suggest that in the case of low-rise frames, cyclic degradation does not significantly affect the structural response, measured in terms of inter-storey drifts, while in the case of medium-rise frames degradation modelling is more relevant, resulting in up to 40% higher inter-storey drifts values. It is concluded, based on the findings of this study, that detailed assessments would be required in order to quantify the influence of cyclic degradation modelling in the structural response of medium-rise moment frame with various typologies.

000018216 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018216 653__ $$asteel moment frames; seismic design; Eurocode 8; displacement demands; deterioration modelling; cyclic degradation.

000018216 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018216 720__ $$aTsitos, Antonios$$iElghazouli, Ahmed$$iBravo-Haro, Miguel
000018216 8560_ $$ffischerc@itam.cas.cz
000018216 8564_ $$s1128938$$uhttps://invenio.itam.cas.cz/record/18216/files/1033.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1033.
000018216 962__ $$r16048
000018216 980__ $$aPAPER