Theoretical Study for Punching Behavior of Light Weight Concrete Slabs

Abstract

This thesis introduces the results of Theoretical Study for Punching Performance of Light Weight Concrete Slabs. The first purpose of this research is to originate a relationship between punching strength lowering factor (λ) and concrete density. In order to accomplish this intention, a complete criterial study were fulfilled and the parameters were explored in this study; namely, the concrete density, the slab depth, quantity of reinforcement against shear and the loading area. The study involves literature laboratorial case studies in addition to FEM models originated by the author. Chapter 6 : Summary and conclusion

213 It consists of ten (10) (LWC) slabs and two (2) (NWC) control slab, All slabs subjected to concentric vertical loads with different bearing areas, slab thicknesses and shear reinforcement. Punching load of failure was presented for each of (LWC) physical model and corresponding (NWC) FEM. Punching strength reduction factor (λ) for each case study was calculated by dividing the punching capacity of the (NWC) FEM by its corresponding capacity of (LWC) physical model. Finally, a relation between Punching strength reduction factor (λ) an