Punching Shear Simulation of Flat Slab Using Truss, Stirrup and Stud

Flat slab construction has been widely used in construction today because of many advantages that it offers. Punching shear reinforcement system such as truss, studs and stirrups are used for the analysis. For the analysis a three dimensional finite element model (FEM) of flat slab is developed through Ansys16.1. Slab with and without punching shear reinforcement is used for the analysis. Punching shear reinforcement is an efficient way to increase the strength and deformation capacity of slab column connection. Three different arrangements of shear reinforcements are studied: rectangular, angular and radial. Amount and the arrangement of the shear reinforcement influence the performance and failure mode. Load carrying capacity and stress distribution pattern is considered for taking the best model. Finite Element Analysis model from each arrangement having high load carrying capacity and better stress distribution pattern is considered for the result comparison. Stress distribution pattern shows the intensity of crack developed on slab. Smaller the value of stress means there is a reduction in the crack developed on the slab. Along with punching shear analysis (impact loading), lateral load acting at an angle of forty five degree and ninety degree is also used for analysing the slabs performance. And the result shows that slab with shear reinforcement also have resistance against lateral load acting on it.