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  • Torsional effects in the pushover-based seismic analysis of buildings
    Fajfar, Peter, 1943- ; Marušić, Damjan ; Peruš, Iztok
    The general trends of the inelastic behaviour of plan-asymmetric structures have been studied. Systems with structural elements in both orthogonal directions and bi-axial eccentricity were subjected ... to bi-directional excitation. Test examples include idealised single-storey and multi-storey models, and a three-storey building, for which test results are available. The response in terms of displacements was determined by nonlinear dynamic analyses. The main findings, limited to fairly regular and simple investigated buildings, are: (a) The amplification of displacements determined by elastic dynamic analysis can be used as a rough, and in the majority of cases conservative estimate in the inelastic range, (b) Any favourable torsional effect on the stiff side, which may arise from elastic analysis, may disappear in the inelastic range. These findings can be utilised in the approximate pushover-based seismic analysis of asymmetric buildings, e.g. in the N2 method. It is proposed that the results obtained by pushover analysis of a 3D structural model be combined with the results of a linear dynamic (spectral) analysis. The former results control the target displacements and the distribution of deformations along the height of the building, whereas the latter results define the torsional amplifications. The proposed approach is partly illustrated and evaluated by test examples.
    Vir: Journal of earthquake engineering. - ISSN 1363-2469 (Letn. 9, Št. 6, 2005, str. 831-854)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2005
    Jezik - angleški
    COBISS.SI-ID - 2995553

    Povezava(-e):

    https://repozitorij.uni-lj.si/IzpisGradiva.php?id=133076
    DOI

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