Abstract
In this study, three-dimensional (3D) finite element modeling (FEM) analysis of the disk shearkey was conducted in consideration of the material properties of the existing concrete surface for the application of the disk shear-key to the seismic retrofitting joint without removal of the finishing material. For this, a 3D FEM model was constructed to reproduce a previous shear element experiment. Subsequently, the analysis was conducted using a model in which the existing concrete surface had a finishing material with a thickness of 10 mm. The results confirmed that the shear resistance performance of the disk shear-key was reduced considerably. Furthermore, the stress state inside the member indicated that the embedded depth of the steel disk, hd , is an important parameter. As a result of the analysis based on the use of hd , it was discovered that the shear resistance performance was ensured by extending hd from 20 to 30 mm.
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