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Punching Shear of Reinforced Concrete Shell Structures

by Gajanan M. Sabnis, Howard Univ, Washington, United States,
Amjad A. Shadid, Howard Univ, Washington, United States,



Document Type: Proceeding Paper

Part of: Spatial, Lattice and Tension Structures

Abstract:

In reinforced concrete shells punching shear failure may take place, if heavy concentrated loads are applied. Such failure is undesirable, since it does not provide adequate warning and ductility. There is a no design aid available for the punching shear. This paper presents the results of a multiple regression analysis of the available data and effect of the various parameters on punching shear failure loads. The analysis resulted in a simple yet reliable equation to give adequate results for more accurate design of the curved members. It indicates that the present ACI code provisions for punching shear strength are considerably conservative.

Subject Headings: Punching shear | Shear failures | Reinforced concrete | Shear strength | Failure analysis | Shell structures | Failure loads

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