Analysis of interior panel of flat slab with opening at different position from column face

Abstract

Openings in the flat slab may be required for multiple types of architectural purposes, including the transition of gas, electricity, water, and air-conditioning systems, as well as stairs or elevators. The aim of this research is to examine how openings in flat slab structures affect these structures’ structural behaviour. The study focuses on two main aspects: the size and location of the openings. The study examined a total of eight different models or specimens. Six of these models had a square opening with dimensions of 2 x 2 meters. The openings were positioned at three different locations: directly at the column face, 1 meter away from the column face, and 2 meters away from the column face. These six models were further divided into two groups: one group with drop panels and the other without drop panels. By increasing the slab thickness near the column, drop panels help redistribute the shear forces and mitigate the risk of failure. In addition to the six models with openings, the study also included two models without any openings. These two models were analysed both with and without drop panels to compare their behaviour with the models that had openings. The structural behaviour of the various models was simulated and examined using the finite element analysis software CSI SAFE 2016. The analysis aimed to evaluate critical factors such as punching shear capacity and deflections by comparing the results of the different models. The purpose of the study was to provide information on how the position and size of openings affect flat slab systems’ structural performance. Overall, the objective of the study was to contribute to the understanding of how openings in flat slabs, particularly when located adjacent to columns, can impact the structural behaviour and vulnerability of the system to failure.