Title: Cyclic Shear and Flexural Behavior of L- and T-Columns
Author(s): Yu-Chen Ou and An-Nhien Truong
Publication: Structural Journal
Appears on pages(s): 1603-1613
Keywords: effective shear area; flexural strength; L-column; reinforced concrete columns; shear strength; T-columns
Seven full-scale L- and T-columns were tested using lateral cyclic loading in this research to investigate their shear and flexural behavior. Based on the test observations, a new way of calculating the effective shear area that includes the contribution of the overhanging flange was proposed for L- and T-columns. The proposed effective shear area combined with the shear strength equations for columns of the ACI Code not only produced shear strengths that were more reasonably conservative but also showed less scatter than the current ACI Code method. The L- and T-columns that were designed with a sufficient amount of shear reinforcement determined by the proposed shear strength equations showed flexural, ductile behavior with ductility capacities ranging from 6.1 to 7.6. Based on the test results of these flexural columns, it was found that the ACI 318 code was conservative for the nominal flexural strength but unconservative for the maximum probable moment strength.