STATISTICAL PERFORMANCE OF SEMI-ACTIVE CONTROLLED 10-STOREY LINEAR BUILDING USING MR DAMPER UNDER EARTHQUAKE MOTIONS

Document Type : Research Article

Authors

1 Department of Civil Engineering, Faculty of Engineering, University of Maragheh, Maragheh, Iran

2 Department of civil engineering, faculty of engineering, university of maragheh,maragheh.iran

Abstract

Due to the advantages of semi-active control methods over passive and active methods, the development and performance of these methods to control the structural response under dynamic lateral loads has been widely considered. One of the most developed devices for semi-active control is Magneto-Rheological (MR) Dampers, for which various models have been proposed to simulate its dynamic behavior. In this paper, a 10-story linear shear building is studied under twenty-eight far and near-field earthquakes in MATLAB. In order to control the vibration of the structure, a Magneto-Rheological Damper with Clipped Optimal Control Algorithm is used. In this simulation, in addition to considering the effect of actuator saturation, the actuator’s dynamics is also considered using the Modified Bouc-Wen model. In addition, the effect of the damper’s position is investigated in the current study for three different configurations (lower, middle and upper stories). Furthermore, using the obtained results from this algorithm, a statistical study was carried out under different types of near and far-field records. The results indicate that placing a Magneto-Rheological damper on the first floor shows the best performance. Results show that the current control system has the best performance under near-field records without pulse, with an average reduction of 21 percent in the structural response.

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