000011332 001__ 11332
000011332 005__ 20141205155900.0
000011332 04107 $$aeng
000011332 046__ $$k2008-10-12
000011332 100__ $$aPeruš, Iztok
000011332 24500 $$aSimplified Nonlinear Seismic Assessment of Structures Using Approximate SDOF-IDA Curves

000011332 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011332 260__ $$b
000011332 506__ $$arestricted
000011332 520__ $$2eng$$aSimplified inelastic procedures used in seismic design and assessment combine the nonlinear static (pushover) analysis and the response spectrum approach or nonlinear dynamic analysis of a single-degree of freedom model (SDOF). One of such procedures is the N2 method which has been developed at the University of Ljubljana and implemented into the Eurocode 8 standard. The inelastic spectrum, which is prescribed by Eurocode 8 and used for the determination of the target displacement, allows only a rough bi-linear idealization of the pushover curve and assumes an unlimited ductility. In this study an attempt has been made to predict the target displacement by four-linear idealization of the pushover curve using the approximate SDOF-IDA curves. Instead of calculating the SDOF-IDA curve for particular input parameters that describe the equivalent SDOF system, a large database of SDOF-IDA curves, which correspond to uniformly distributed input parameters (i.e. periods, damping ratios, force-displacement envelopes) and different ground-motion records, was established. The prediction of the IDA curve for a specific structure can be made by combining the database of the SDOF-IDA curves with a simple approach, known as n-dimensional linear interpolation. The application of the proposed methodology is demonstrated using an example of a four-storey reinforced concrete structure. The results obtained by the simplified nonlinear seismic assessment method are compared with the results based on the IDA analysis.

000011332 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011332 653__ $$asimplified method, inelastic, N2 method, SDOF-IDA curve, n-dimensional linear interpolation

000011332 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011332 720__ $$aPeruš, Iztok$$iFajfar, Peter$$iDolšek, Matjaz
000011332 8560_ $$ffischerc@itam.cas.cz
000011332 8564_ $$s362473$$uhttps://invenio.itam.cas.cz/record/11332/files/05-01-0249.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0249.
000011332 962__ $$r9324
000011332 980__ $$aPAPER