2019 CSCE Annual Conference - Laval (Greater Montreal) Conference
Mr. mohamed Nabil, Fayoum University
RC buildings with transfer slab systems are characterized as irregular structures that have both mass and stiffness irregularities. The existence of heavy concentrated mass located at the level of transfer slab, together with using varying structural system underneath and above the transfer slab, resemble the sources of sever irregularity of such structures. The seismic characteristics and behavior of those structure are investigated using 2D and 3D idealizations. The dynamic characteristics of those structures are assessed by examining the mode shapes, periods and participation factors of used models. The seismic behavior is investigated by examining the inter-story drift ratios as well as damage indices of RC structures when subjected to various ground motion excitations, in time history analyses. Finite element models are analyzed using CSI-ETABS V.2016. The study assesses the accuracy of using 2D model idealization in comparison to the more accurate 3D models.