چكيده به لاتين
This study investigates the effect of seismic sequence on concrete moment frames with/without shear walls. At first, three moment resisting concrete frames with 4, 7 and 10 stories are designed and analyzed under as-recorded records with/without seismic sequence phenomena. In order to investigate the effect of seismic sequence phenomena, frmaes were subjected to nonlinear time history analysis and some parameters such as, maximum ductility demand, inter story drift and shear deformation of shear walls are calculated.
It was seen that records with PGA ratio of consecutive records to single’s less than 0.5 do not have any significant effect on the response of the examined frames. As PGA ratio increased, the effect of seismic sequence on the frames is more considerable. Results shows that seismic sequence phenomena has more effectve on the moment frames with shear walls compared to moment frames. Moreover, its effectiveness decreased as the number of stories increased, for both structural systems.
Keywords: Seismic Sequence, Concrete Moment Frame, Shear wall, Nonlinear Time History Analysis, Ductility Demand
