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( Improved Modal PushOver Analysis )

A modal pushover analysis procedure for estimating seismic
demands for buildings
Anil K. Chopra1;∗;† and Rakesh K. Goel2
1Department of Civil and Environmental Engineering; University of California at Berkeley; Berkeley;
CA, 94720-1710; U.S.A.
2Department of Civil and Environmental Engineering; California Polytechnic State University; San Luis Obispo,
CA; U.S.A.

  Developed herein is an improved pushover analysis procedure based on structural dynamics theory, which retains the conceptual simplicity and computational attractiveness of current procedures with invariant force distribution. In this modal pushover analysis (MPA), the seismic demand due to individual terms in the modal expansion of the e< Sons, & Wiley John 2001 ? Copyright design. and evaluation building in application practical for enough accurate is procedure MPA the Thus, systems. elastic of response peak estimating RSA as accuracy degree similar a to range inelastic into well responding buildings estimates that demonstrated it analysis, history non-linear rigorous with compared approximate by determined steel 9-storey When (RSA). analysis spectrum standard equivalent be shown systems, applied on demand seismic total estimate an provides expansion terms three or two ?rst due demands ‘modal’ these Combining mode. each distribution force inertia using pushover forces earthquake>

http://www.dica.unict.it/users/icalio/chopra/articoli/1.pdf