An adaptive version of the capacity spectrum method is proposed to estimate deformation demands of steel moment-resisting frames under seismic loads. Its computational attractiveness and capability of providing satisfactory predictions of seismic demands in comparison with those obtained by other advanced nonlinear static procedures in literature are examined. Both effectiveness and accuracy of these approximated methods based on pushover analysis are verified through an extensive comparative study involving both regular and irregular steel moment resisting frames. The results obtained by the nonlinear static procedures are compared with the results of nonlinear response history analysis under spectrum-compatible accelerograms.
AN ADAPTIVE CAPACITY SPECTRUM METHOD FOR ESTIMATING SEISMIC DEMANDS OF STEEL MOMENT-RESISTING FRAMES
FERRAIOLI, Massimiliano;MANDARA, Alberto
2015
Abstract
An adaptive version of the capacity spectrum method is proposed to estimate deformation demands of steel moment-resisting frames under seismic loads. Its computational attractiveness and capability of providing satisfactory predictions of seismic demands in comparison with those obtained by other advanced nonlinear static procedures in literature are examined. Both effectiveness and accuracy of these approximated methods based on pushover analysis are verified through an extensive comparative study involving both regular and irregular steel moment resisting frames. The results obtained by the nonlinear static procedures are compared with the results of nonlinear response history analysis under spectrum-compatible accelerograms.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
