Nonlinear Behavior of Flat Slabs with Openings in Column Strip

Abstract

This study presents through three-dimensional simulations, pushover analysis to assess the seismic performance of flat slab-columns buildings with/without diaphragm opening. ETABS program is used for implementing buildings models and performing pushover analysis. Pushover analysis is performed following the applied technology council procedures ATC-40 in assessing the performance of these buildings under moderate earthquake. In this research, six buildings with common configurations and with different parametric studies were investigated. The target buildings are assumed to be located in Cairo and designed according to Egyptian code seismic standards as a flat slab-columns system. Buildings used in the study are a four-story and eight-story flat slab buildings representing low and medium-rise flat slab buildings that can be constructed without shear walls. The typical floor height is 3m and the selected reinforcement ratios are within the range allowed by Egyptian code.