Peng, B.Dhakal, RajeshFenwick, R.2007-05-182007-05-182006Peng, B., Dhakal, R.P., Fenwick, R. (2006) Causes of elongation in reinforced concrete beam subjected to cyclic loading. Bangkok, Thailand: Tenth East Asia and Pacific Conference on Structural Engineering and Construction (EASEC10), 3-5 Aug 2006.http://hdl.handle.net/10092/41Elongation in the plastic hinge regions of reinforced concrete beam has a significant influence on the integrity of the structure. This paper describes the research carried out to examine the key mechanisms that contribute to the elongation in plastic hinges. The effect of axial forces on the mechanisms that causes elongation is also investigated. A finite element program is employed to simulate the experimental work reported in literature. The analytical predictions are compared with the experimental results. It is found that elongation in plastic hinges is associated with two key factors: (1) unrecoverable stretching of compression reinforcement, and (2) plastic strains in reinforcement due to plastic rotation. The contributions of these factors to elongation are found to be markedly different for different types of plastic hinge.enBeam elongationReinforced concreteShear deformationCompression reinforcementUni-directional/ reversing plastic hingeConference Contributions - PublishedFields of Research::290000 Engineering and Technology::290800 Civil Engineering::290801 Structural engineeringFields of Research::290000 Engineering and Technology::290800 Civil Engineering::290804 Construction engineering