000013224 001__ 13224
000013224 005__ 20161114160332.0
000013224 04107 $$aeng
000013224 046__ $$k2009-06-22
000013224 100__ $$aAydinoglu M., N.
000013224 24500 $$aAdaptive modal pushover analysis (ampa) procedure: application to bridge analysis

000013224 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013224 260__ $$bNational Technical University of Athens, 2009
000013224 506__ $$arestricted
000013224 520__ $$2eng$$aModal Pushover Analysis (MPA) procedure is a widely accepted practice-oriented nonlinear analysis tool, which approximately considers the effects of higher modes in pushover analysis. In recent years the application of the procedure has been extended to bridges. In MPA, an auxiliary curve called “pushover curve” or “capacity curve” needs to be plotted for each mode in terms of certain response quantities of MDOF system, which is subsequently converted to a “capacity diagram” of the corresponding modal SDOF system to estimate the seismic demand. However the conversion is not unique, i.e., different MDOF system response quantities would yield different capacity diagrams, and hence result in different nonlinear response. This approximation especially affects MPA applications on bridges where the definition of the representative MDOF response quantities, i.e., the coordinates of the pushover curve can never be standardized. In this contribution, implementation of Adaptive Modal Pushover Analysis (AMPA) Procedure is attempted to avoid this approximation by eliminating the need for a pushover curve in each mode and yielding directly SDOF modal capacity diagrams. However, the procedure has not been always successful as demonstrated through the analysis examples performed on typical bridge systems, which involve a regular bridge and an irregular bridge. A second attempt is made to apply a Modified Modal Pushover Analysis (MMPA) procedure where MDOF response quantities are calculated for each mode utilizing the current deflected shape at each pushover step. It is observed that MMPA yields better results compared to AMPA with respect to nonlinear response history analysis results, which are also compared with those of Incremental Response Spectrum Analysis (IRSA) procedure.

000013224 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013224 653__ $$aSeismic Performance Assessment, Modal Pushover Analysis, Adaptive Procedures, Bridge Analysis, Incremental Response Spectrum Analysis.

000013224 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013224 720__ $$aAydinoglu M., N.$$iOnem, G.
000013224 8560_ $$ffischerc@itam.cas.cz
000013224 8564_ $$s282515$$uhttps://invenio.itam.cas.cz/record/13224/files/CD314.pdf$$yOriginal version of the author's contribution as presented on CD, section: Analysis methods for bridges subjected to seismic actions - i (MS).
000013224 962__ $$r13074
000013224 980__ $$aPAPER