Abstract
Punching shear in concrete slabs is a serious problem in certain structural systems, such as flat slabs. Current analysis is based either on empirical and simplified 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 force–displacement 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.
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