Title: Shear Behavior of Reinforced Concrete Structural Walls under Eccentric Compression Load
Author(s): Tae-Sung Eom, Eun-Jin Park, and Seung-Jae Lee
Publication: Structural Journal
Appears on pages(s): 63-73
Keywords: eccentric loading; reinforced concrete; shear strength; shear test; structural walls
In this study, the shear behavior of reinforced concrete structural walls subjected to eccentric compression loads was investigated. Shear tests of six cantilever walls with an aspect ratio of 2.0 were performed. The magnitude and eccentricity of the axial loads applied to the walls were considered the test parameters. The tests showed that the failure mode and shear strength of the eccentrically loaded walls are significantly affected by the eccentricity. As the eccentricity increased, the failure mode changed from the diagonal tension failure in the web to the flexure-shear cracking failure, which resulted in a decrease in the shear strength. The test strengths were compared with the shear strengths predicted in accordance with the provisions of ACI 318-14. The results showed that the ACI 318 equations for compression members such as walls and columns, based on diagonal tension and flexure-shear cracking failures, underestimate the shear strengths of the eccentrically loaded walls.