A Design Method for Punching Shear Strength of Steel Fiber Reinforced Concrete Slabs

Abstract

The paper presents a design method for determining the capacity of slab-column connections made with steel fiber concrete at ultimate load. The effects of fiber reinforced on resisting the upward movement of flexural cracking and increasing the concrete tensile strength are incorporated to the design equation. The fitting factors to match the predictions to experimental data are not employed by the approach. A depth correction is, however, used to account for the size effects. The proposed design equation is applied to predict the ultimate punching shear strength of 62 slab column connections tested involving a wide range of fiber variables, concrete type and strength, tension steel ratio, size of slab and loaded area. The paper presents the comparisons between computed values and the experimentally observed values.