Headed Reinforcement in Exterior Beam-Column Joints Under Seismic Loading

TitleHeaded Reinforcement in Exterior Beam-Column Joints Under Seismic Loading
Author(s)John W. Wallace
PublicationConcrete International
Volume19
Issue12
DateDecember 1, 2015

Abstract

The behavior and load-deformation response of reinforced concrete exterior beam-column joints constructed with headed reinforcement is evaluated. The evaluation is based on the experimental results of two exterior joint specimens, one representative of construction for high seismic regions and one representative of construction for wind loads. An overview of the experimental study is presented prior to evaluating the effectiveness of the specimens constructed using headed reinforcement. Headed reinforcement lessens congestion in beam-column joints. Use of headed reinforcement eased specimen fabrication and concrete placement. Excellent behavior was observed for both specimens constructed to meet current ACI-ASCE Committee 352 design recommendations.