Analytical Study of Behaviour of RCBeam-column - Engineering Assignment Help

Assignment Task

Task

The study presents, behaviour of RC beam-column joint subjected to cyclic loading. The mathematical model of RC beam-column joint will be prepared by using shear spring, bond spring and Rotational spring. The rotation of the cross section due to reinforcing bar slip is modeled by a bond spring. Shear-transfer failure at the joint–beam and joint–column interfaces is modeled by shear spring. Rotational spring is also used in the center of the joint shear panel zone to model the relative rotation between the beams and columns. The Properties of spring will be based on previous researches. The non-linear cyclic analysis will be carried out using SeismoStruct software. From the study, hysteretic behaviour, bending moment and shear forces will be evaluated.

Overview:

From pre-historic era earthquake is the natural major destruction elements to human beings. U.S. Geological Survey says, at least 8,50,000 people were killed and more than 3 million buildings collapsed or were significantly damaged during the 26 major earthquake events that occurred over the past two decades. Reinforced concrete (RC) frame structures found a large numbers of those buildings. During earthquake most of the structure failure occurred in joint area, so beam-column joint is one of the major failure zones. Recent and past earthquakes in different parts of the world have revealed again the importance of design of reinforced concrete structures with high ductility. Under seismic loading the deformation of reinforced concrete (RC) frame structures is generally influenced by the behaviour of the beam-column joint. Because of that Reinforced concrete (RC) beam-column joint have been the subject of intensive research over the past few decades. In RC buildings, common portion of column to beams at their intersections are called beam-column joints. Since their component materials have limited strengths, the joints have limited force carrying capacity. When forces more than these are applied during earthquakes joints are grievously damaged. Under cyclic or seismic loading, the beam-column joint region is subjected to horizontal and vertical shear forces whose magnitudes are many times higher than those within the adjacent beams and columns. Beam-column joints have a key role in the structural integrity of the buildings. For this reason, analytical study of behaviour of beam-column joint during seismic load is very important.

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