BEHAVIOR OF COMPOSITE PRE-FLAT SLABS IN RESISTING PUNCHING SHEAR FORCES

Abstract

The main purpose is the analysis of composite pre-flat slabs with diverse capacities of punching shear reinforcement, throughout an experimental and numerical investigation of composite pre-flat slabs. The additional primary objective was the development of an analytical model that enables accurate predictions of the punching strength, the deformation capacity of composite pre-flat slabs and accounting the influence of critical parameters of punching shears capacity depending on three international cods. Finally, providing the new equations capable of estimating the accurate resistance punching shear forces of composite pre-flat slabs. Specimens categorized into sixteen slabs cast as composite pre-flat slabs (two layers) and four monolithic control slabs cast as a (one layer) slabs. Samples have the same measures (1100 mm x1100 mm) with overall thickness (120 mm), since the composite pre-flat slab layers of (60mm), using reinforced square column with size (150mm x 150mm) and (400mm) for height.