• 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.

International Concrete Abstracts Portal


Title: Seismic Design of Reinforced Concrete Beam-Column Joints with Headed Bars

Author(s): Thomas H.-K. Kang, Myoungsu Shin, Nilanjan Mitra, and John F. Bonacci

Publication: Commentary Reference



Appears on pages(s): 868-877

Keywords: beam-column joints; headed bars; reinforced concrete; seismic


Date: 11/1/2009

ection 12.6 provisions of ACI 318-08 detail the development of headed and mechanically anchored deformed bars for the first time in the Code series. Prior to this, Joint ACI-ASCE Committee 352 published design recommendations for headed reinforcement used in reinforced concrete beam-column joints (ACI 352R-02). However, both ACI 318-08 and 352R-02 are based on quite limited experimental research. Given this concern, these ACI standards and recommendations were evaluated using an extensive database encompassing most available test data for reinforced concrete beam-column joints with headed bars subjected to reversed cyclic loading. The primary objectives of this study are to document the experimental investigations in a uniform format; provide a detailed review for the test data; and, finally, propose design guidelines to supplement ACI 352R-02 and 318-08 on the subject of headed bars anchored in beam-column joints.