Cyclic Behavior of Interfaces for Seismically Retrofitted RC Buildings

In seismically retrofitted reinforced concrete (RC) structures, new members are connected to existing using interfaces with roughened surfaces and post-installed dowel bars. During an earthquake, the subjected cyclic shear normal stresses. Therefore, structural design of is essential. a previous study, loads were applied interface specimens. Moreover, strength estimation method was proposed; however, behavior not discussed. This paper presents model surface in RC structures. First, envelope constructed Saenz model, constitutive law concrete. Subsequently, rules modeled. incorporated into proposed estimate test results. Finally, provided reasonably estimated results; average ratio results 1.04. addition, as δ increased, effect bar intensified terms shear.