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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: Performance of Shearbands in Concrete Slab-Column Connections
Author(s): Thomas H.-K. Kang and Hong-Gun Park
Publication: Special Publication
Appears on pages(s): 1-16
Keywords: shearbands; slab-column connections; shear reinforcement; reinforced concrete; performance; seismic.
Abstract:This paper deals with concrete slab-column connections reinforced with shearbands, covering the performance under gravity and combined gravity and cyclic lateral loads. Prior and recent test results from the U.K., U.S. and Korea are summarized. The recent tests conducted at Seoul National University revealed that the shearbands were more effective in increasing punching shear resistance, deformability and energy dissipation than headed studs under the same testing conditions (e.g., flexural and shear reinforcing ratios, gravity shear ratio = ~0.45, etc.). Engaging only a few slab bars was sufficient for anchorage. The top and bottom bends appeared to play a significant role in providing shearband anchorage. For the cyclic lateral tests (Kang and Wallace, 2008; Park et al., 2011), the constant gravity load was maintained by continuously jacking up the column bottom during seismic testing of the slab-column connections. This was the same method used for all connections in each seismic test program. The details of all the testing programs and design oversights are discussed. Finally, practical applications of shearbands in North America and Australia are introduced.
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