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Torsional effects in the pushover-based seismic analysis of buildingsFajfar, Peter, 1943- ; Marušić, Damjan ; Peruš, IztokThe 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.Source: Journal of earthquake engineering. - ISSN 1363-2469 (Letn. 9, Št. 6, 2005, str. 831-854)Type of material - article, component part ; adult, seriousPublish date - 2005Language - englishCOBISS.SI-ID - 2995553
Author
Fajfar, Peter, 1943- |
Marušić, Damjan |
Peruš, Iztok
Topics
IKPIR 50let |
torzija |
asimetrične zgradbe |
potresni odziv |
analiza potiskanja |
N2 metoda |
torsion |
asymmetric buildings |
seismic response; |
pushover analysis |
N2 method
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Fajfar, Peter, 1943- | 00025 |
Marušić, Damjan | 16420 |
Peruš, Iztok | 08745 |
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