FINITE ELEMENT ANALYSIS OF REINFORCED CONCRETE BEAM-COLUMN CONNECTION WITH KINKED REBAR CONFIGURATION UNDER LATERAL CYCLIC LOADING USING ABAQUS
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Abstract
Plastic hinge deformation is a mode of failure due to earthquake loading commonly found on beam-column joint of a reinforced concrete (RC) structure that adopted strong column-weak beam (SCWB) philosophy. This philosophy is widely used and have been the basic principles of many seismic codes. One research study conducted an experiment with a new steel reinforcement design with kinked configuration with the aim of relocating the plastic hinge deformation away from the beam-column joint to a desirable location on the beam. This design has the potential to improve the usable spaces of a building as stocky column design is no longer necessary. However, all experimental specimens by previous study were found to have only used a single type of concrete grade and the same cyclic loading. Therefore, the deformation of the newly proposed design is mostly unknown under various different conditions. This study aims to analyse the deformation of the new RC structure design under cyclic loading with the implementation of different parametric conditions through finite element modelling using ABAQUS. It was found that the deformation and cracking pattern of the simulated structures are in good agreement with the selected experimental specimen despite being under different conditions. Furthermore, the kinked rebar region was found to have a significant effect on the formation of the initial deformation of the structure under cyclic loading.
