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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: Biaxial Interaction and Load Contour Method of Reinforced Concrete T-Shaped Structural Walls
Author(s): Tae-Sung Eom, Hye-Sung Nam, and Su-Min Kang
Publication: Structural Journal
Appears on pages(s): 151-161
Keywords: biaxial interaction; biaxially loaded walls; load contour method; reinforced concrete; structural wall; T-shaped walls
Abstract:Reinforced concrete structural walls with T-shaped cross sections (or T-shaped walls) have been used as an efficient lateral force-resisting system for building structures. Such T-shaped walls are subjected to axial compression and combined bending moments about two orthogonal axes. In the present study, a straightforward design method for biaxially loaded T-shaped walls is developed by modifying the existing load contour method. First, a strain compatibility section analysis method that can estimate the biaxial bending resistances of arbitrary wall sections is developed and its validity is verified through comparisons with test results. Then, a parametric study is performed to investigate the interaction of biaxial moments at a constant axial load in T-shaped walls. The parametric results show that, due to the unsymmetrical geometry of T-shaped sections, the biaxial interaction depends significantly on the direction of moments and the magnitude of axial compression. Based on the results, the non-dimensional contour equations of biaxial moments for T-shaped walls are proposed and a design procedure of T-shaped walls is established.
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