000015922 001__ 15922
000015922 005__ 20161115135333.0
000015922 04107 $$aeng
000015922 046__ $$k2013-06-12
000015922 100__ $$aMihanovic, A.
000015922 24500 $$aEnvelope Principle in Multi-Mode Pushover Procedure for RC Buildings

000015922 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015922 260__ $$bNational Technical University of Athens, 2013
000015922 506__ $$arestricted
000015922 520__ $$2eng$$aPushover method is a practical procedure for comprehensive nonlinear analysis of structures subjected to seismic action. Application of this method, in accordance with the Eurocode 8 rules and due to engineering simplicity, favours application utilizing the first mode. Aim of research presented in this paper was to find the influence of multimodal combinations in assessing the bearing capacity of reinforced concrete (RC) frames and walls. This paper presents a procedure in which the most extreme state is defined by the lowest ground acceleration caused by a predetermined shape of an elastic spectrum. Extreme bearing value is obtained by the envelope principle. Mode shapes and period sizes are determined on a linear elastic model while the limit state of the load bearing system is evaluated in a nonlinear state of structures. Results of the analysis show that influences of higher modes are significantly bigger and that the safety/reliability, indicated by criteria for the target displacement, in accordance with Eurocode 8 (Annex B), is not achieved. Inclusion of higher modes, in some presented examples, decreases the limit ground acceleration by more than two times, which is significantly less favourable than the target displacement criteria.

000015922 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015922 653__ $$aMulti-mode pushover, Target acceleration, Envelope, RC frames.

000015922 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015922 720__ $$aMihanovic, A.$$iBalic, I.$$iTrogrlic, B.
000015922 8560_ $$ffischerc@itam.cas.cz
000015922 8564_ $$s1752356$$uhttps://invenio.itam.cas.cz/record/15922/files/1705.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-RS 03 COMPUTATIONAL SEISMIC STRUCTURAL ANALYSIS
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000015922 962__ $$r15525
000015922 980__ $$aPAPER