Numerical and Experimental Behavior of Moment Concrete Frame Retrofitted with ADAS Metal Yielding Damper Under Lateral Loading

Abstract

Many concrete structures need to be retrofitted, repaired, strengthened, and improved due to various reasons, such as errors during design or construction, changing the use of the structure, and losing part of the structure's capacity due to the corrosion of steel rebars. Since the use of dampers in the structure can increase the useful life of the structure, this advantage causes sustainable development in the environment and less damage to the environment, because less materials will be used to destroy and rebuild the structure. In this study, the behavior of concrete frames with bracing and dampers was experimental and numerically studied using ABAQUS software. The difference value of strength for the concrete frame, concrete frame with steel brace, and concrete frame with damper was 4.6, 0.4, and 3.9%, respectively. By utilizing the verification results, it is possible to save both cost and time for the experimental study. In the following, a parametric study was conducted on the behavior of the frame equipped with a damper and the number of bending plates in various thicknesses. Results indicate that when the thickness is increased from 1 to 2, 1 to 3, and 1 to 4 mm, the strength is increased by about 2.6, 16.83, and 27%, respectively. Also, by increasing the number of plates from 6 to 8, 6 to 10, and 6 to 12, the strength has increased by 9.33, 26.30, and 54%, respectively.