Measures of Improving the Mechanical Behaviors of Concrete Slabs Subjected to Punching Shear

摘要

Based on tests, measures of improving the punching shear behaviors of concrete slabs are investigated. The factors which affect the mechanical behaviors of punching shear slabs without shear reinforcements are the longitudinal bars parallel to the surface of the slab, strength of concrete, span-depth ratio of the slab and the content of steel fibers in concrete. A formula mode which considers the punching capacity of the failure cone and a part of flexure strength of the whole slab for calculating the punching shear strength of the slab is also suggested in this paper.