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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Capturing the Shear Failure of Reinforced Concrete Beams With Snap-Back Instability
Author(s): T. Tanabe and A. ltoh
Publication: Special Publication
Appears on pages(s): 233-250
Keywords: arc length method; energy absorption; post-peak;
reinforced concrete; shear failure; snap-back; softening
Abstract:The shear failure of a reinforced concrete beam and a column without stirrups is known to have substantial scale effect. In other words, softening characteristics of concrete play a dominant role in its pre- and post-peak behavior. The post-peak static behavior of reinforced concrete members are directly related to the dynamic post-peak behavior of reinforced concrete structures or the extent of energy absorbing capacity of a member and consequently to the safety margin to be allocated in a beam or a column in seismic design. It become more so when a structure fail in snap-back instability allowing more energy to come in a structure to be converted to dynamic energy passing the peak loading capacity. The numerical difficulty encountered to capture snap-back is itself a good challenging target. The snap-back instability is explained for the case of uniaxial tension, and the shear characteristics of reinforced concrete beams with snap-back are examined by changing the beam dimensions and the span over depth ratio.
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