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Title: Behavior of Closing Knee Joints Using L-Shaped Coupler instead of Bending Bars

Author(s): Al-Tuhami Abuzeid, Ahmed Ghallab, and Ahmed Y. Al-Tuhami

Publication: Structural Journal

Volume: 118

Issue: 2

Appears on pages(s): 153-166

Keywords: bending reinforcing bar; closing moment; experimental study; knee joint; L-shaped mechanical coupler; reinforced concrete

Date: 3/1/2021

The purpose of this research is to study the structural behavior of exterior corner beam-column joints subjected to closing quasistatic loads. The perpendicular main tension reinforcement bars are coupled using new L-shaped mechanical couplers instead of bending them. Eight full-scale specimens divided into four groups were tested. Each group consisted of two specimens: a conventional and a proposed reinforcement detail specimen. The parameters also include the effect of concrete grade and presence of horizontal and vertical stirrups in the knee joint. The results showed that using L-shaped mechanical couplers instead of bending bars significantly improved the ductility and load-carrying capacity of the specimens.


Electronic Structural Journal


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