Assessment Of Shear Strength Of Reinforced Concrete Beam-column Joints

Even though beam-column joint is one of the most critical regions in reinforced concreternframes, a little attention is paid to the design of beam-column joints in Ethiopian practice. Inrnthis study shear strength of beam-column joints RC building frames designed to old EBCS isrninvestigated. Shear strength of selected beam- column joints of a G+5 building has beenrnassessed. The building is analyzed for seismic actions and the shear strength of the beamcolumnrnjointrnisrnestimatedrnusingrnbothrnempiricalrnexpressionsrnandrnanalyticallyrnbyrnusingrnVecTor2rnrnfiniternelementrncomputerrnprogram.rnJointsrninrnthernfourthrnstoryrnrnare selected to be assessed underrnmonotonic loading for a constant column axial load. The study showed that there is arnsignificant variation between result from analysis in VecTor2 and provisions inrnEBCSEN1998-1 (2013). From the investigation on the interior joints, the interior jointrnsatisfies both ductility and shear strength requirement after column jacketing The maximumrnshear stress occurred at a story drift angle of 1.01% before column jacketing and it occurredrnat a story drift angle of 4.63% after column jacketing. This study is not enough in exposingrnthe problems regarding design and detailing of beam-column joints in Ethiopian practice.rnLaboratory investigation is highly recommended due to its accuracy compared to softwarernsimulations.

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