Evaluation of Ductility Coefficient of Reinforced Concrete Flexural Frames by Adding Visco-Elastic Damper by Time History Method

Document Type : Education


Ms.c. of Structural Engineering, Department of Civil Engineering, Shabestar Branch, Islamic Azad University, Shabestar, Iran


The ductility coefficient is used to calculate the ductility strength coefficient and then the response modulation coefficient R. The modulus of response R is used in seismic loading standards to reduce the amount of forces due to the nonlinear behavior of structures in earthquakes. They have become inseparable in seismic design, because they have good use and performance due to earthquake force. In recent decades, in order to reduce the problems caused by conventional methods, studies on energy dissipation systems have been conducted in valid world regulations, including FEMA and ASCE regulations, one of which is attenuator systems, dampers. Visco is elastic, which is inactive in the control systems. In this study, while getting acquainted with viscoelastic dampers, in order to investigate the effect of viscoelastic dampers on seismic vibration response and ductility reduction coefficient, a 6-story structural model in two modes without dampers and with 2D damping with soft concrete bending frame in soft SeismoStruct software has been modeled that the results of this study show that the incorporation of visco-elastic dampers leads to a reduction in roof floor displacement and base shear. The studied structures showed that the proper efficiency of these systems in reducing the vibration response of the structures.


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