000010929 001__ 10929
000010929 005__ 20141205155818.0
000010929 04107 $$aeng
000010929 046__ $$k2008-10-12
000010929 100__ $$aMazza, Fabio
000010929 24500 $$aA Numerical Model for the Nonlinear Seismic Analysis of Three-Dimensional R.C. Frames

000010929 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010929 260__ $$b
000010929 506__ $$arestricted
000010929 520__ $$2eng$$aA lumped plasticity model for the nonlinear dynamic analysis of three-dimensional reinforced concrete (r.c.) frames subjected to bi-directional ground motion is proposed. The frame members are idealized by means of two parallel elements, one elastic-perfectly plastic and the other linearly elastic, assuming a bilinear momentcurvature law. An interaction surface axial force-biaxial bending moment is considered for the end sections of each frame member. The nonlinear dynamic analysis is performed using a step-by-step procedure based on a two-parameter implicit integration scheme and an initial-stress like iterative procedure. At each step, the elastic-plastic solution is obtained adopting the Haar-Kàrmàn principle. A single-storey r.c. three-dimensional frame subjected to a bi-directional artificial ground motion, whose response spectrum matches on average that adopted by Eurocode 8 for a medium risk seismic region and a medium soil, is assumed as test structure for the numerical investigation. The sensitivity of the model to changes in input parameters is investigated. Moreover, a refined fibre model is considered to validate the proposed numerical model.

000010929 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010929 653__ $$aThree-dimensional structure, nonlinear seismic analysis, bi-directional motion, axial force-biaxial flexure interaction, lumped plasticity model

000010929 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010929 720__ $$aMazza, Fabio$$iMazza, Mirko
000010929 8560_ $$ffischerc@itam.cas.cz
000010929 8564_ $$s332303$$uhttps://invenio.itam.cas.cz/record/10929/files/14-0035.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 14-0035.
000010929 962__ $$r9324
000010929 980__ $$aPAPER