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Development of Hooked Reinforcing Bars in Beam-Column Joints
Lepage, Andres
Lepage, Andres
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Abstract
Hooked reinforcing bars are used in beam-column joints to anchor and reinforcing steel. This study examines No. 11 hooked reinforcing bars in beam-column joints. Four specimens, each with three No. 11 hooked bars with an embedment of 12 or 14 in. and with concrete compressive strengths ranging from 5150 to 9460 psi, were tested. The test results were compared with ACI 318-14 and ACI 318-25 provisions and a descriptive equation developed by Banaeipour et al. for hooked bars, based on experimental data from a comprehensive study on the anchorage of hooked bars conducted at the University of Kansas. The ratios of bar stress at failure to predicted stress were 0.80 - 0.95 for ACI 318-14, 0.92 - 1.09 for ACI 318-25, and 0.98 to 1.29 for Banaeipour’s descriptive equation.
Description
These are the slides from a presentation given at the Philadelphia, PA, ACI Concrete Convention on November 3, 2024.
Date
2024-11-03
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University of Kansas
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Keywords
Anchorage strength, Axial load, Beam-column joint, Beam-column subassembly, Hooked bars