Punching Shear in Concrete Slabs
Abstract
Punching shear in concrete slabs is a serious problem in certain structural systems, such as ßat slabs. Current analysis
is based either on empirical and simpliÞed analytical techniques or on theoretical models, mainly based on the theory of
plasticity. This paper presents a new model, based on rigid post-fractured behavior, utilizing the post fracture properties
of concrete at the rough crack interfaces that are developed. The model predicts the forceÐdisplacement resistance during
punching, the stress distributions along the cracked interfaces, as well as the shape of the punched concrete plug.
Comparison of the model predictions with various test data shows good correspondence. ( 1998 Elsevier Science Ltd.
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