A slab-column structure is a bearing system,which is composed of a plate and a column.Because there are no ribs,force transfer is simple,that is to say,the load passes to the foundation directly through the column.This structure has some advantages such as optimization of space and steel plate use,layout flexibility,and quick construction.To improve the punching shear capacity of the concrete slab and to reduce its span,we often set the column head on top of the column.Punching shear has been the object of intense experimental effort since the 1950s.Some codes account for size or membrane effects,or the ratio of column size to the depth of the slab.Here,comparative analysis of formulas for punching shear strength calculations following ACI318-08,Eurocode 2,and GB50010-2010 is carried out.The research shows that the effect of the reinforcement ratio is not always uniform.Using five samples with different reinforcement ratios,which is 0.5% (two),0.99%,2.0%,and 3.0%,respectively,the numerical simulation and parameter analysis is performed with Open System for Earthquake Engineering Simulation (OpenSEES) considering the material nonlinearity and geometric nonlinearity.The proposed numerical method successfully simulates the punching shear capacity of slab-column connections in terms of the load-deformation curve,stiffness variation,and failure characteristics.The research results show that the reinforcement ratio is the key factor in punching shear resistance and should be considered appropriately in any code revision.Finally,the analysis of punching shear strength is also presented with regard to concrete.