Title:
Effect of Longitudinal Tensile Reinforcement Ratio and Shear Span-Depth Ratio on Minimum Shear Reinforcement in Beams
Author(s):
Jung-Yoon Lee and Uk-Yeon Kim
Publication:
Structural Journal
Volume:
105
Issue:
2
Appears on pages(s):
134-144
Keywords:
beams; high-strength concrete; reinforced concrete; shear reinforcement; span; tensile reinforcement.
DOI:
10.14359/19728
Date:
3/1/2008
Abstract:
This paper presents the effects of longitudinal tensile reinforcement ratio and shear span-depth ratio (a /d) on the minimum shear reinforcement in reinforced concrete beams. Twenty-six reinforced concrete (RC) beams having the minimum shear reinforcements required by ACI 318-05 were cast, instrumented, and tested. Although the minimum amount of shear reinforcement in the existing design codes (ACI 318-05, CSA A23.3-04, AIJ-99, and Eurocode 2) depend on neither the longitudinal tensile reinforcement ratio nor the a/d, the test results indicated that the reserve shear (shear strength of the beam with minimum amount of shear reinforcement/shear strength of the beam without shear reinforcement) of the tested beams increased as the longitudinal tensile reinforcement ratio increased, but decreased as the a/d increased.