Assessment of Shear Strength of Reinforced Concrete Beam-Column Joints

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Addis Ababa University


Even though beam-column joint is one of the most critical regions in reinforced concrete frames, a little attention is paid to the design of beam-column joints in Ethiopian practice. In this study shear strength of beam-column joints RC building frames designed to old EBCS is investigated. Shear strength of selected beam- column joints of a G+5 building has been assessed. The building is analyzed for seismic actions and the shear strength of the beamcolumn joint is estimated using both empirical expressions and analytically by using VecTor2 finite element computer program. Joints in the fourth story are selected to be assessed under monotonic loading for a constant column axial load. The study showed that there is a significant variation between result from analysis in VecTor2 and provisions in EBCSEN1998-1 (2013). From the investigation on the interior joints, the interior joint satisfies both ductility and shear strength requirement after column jacketing The maximum shear stress occurred at a story drift angle of 1.01% before column jacketing and it occurred at a story drift angle of 4.63% after column jacketing. This study is not enough in exposing the problems regarding design and detailing of beam-column joints in Ethiopian practice. Laboratory investigation is highly recommended due to its accuracy compared to software simulations.



Concrete Beam-Column, Joints, Shear Strength, Reinforced Concrete