Application of a Distribution of TMDs Located on Upper floors of Tall Buildings that are Tuned to their First Mode in Increasing Their Performance

This paper investigatesanApplication of a Distribution of TMDs Located on Upper floors of Tall Buildings that are Tuned to their First Mode in Increasing Their Performance. A number of 3D steel moment resisting frameswith one level of eccentricities in orthogonal directions areconsidered.Two model ofstructures 15 story with rigid base are designed. We put TMD at the center of rigidity of the roof in first case. Then we put another one atlower story for each structure till about third of height. For example for 15 story structure, we put TMD at(15,1415, 131415, 1213-1415) floors respectively.These models are subjectedto a number of one-directional horizontal groundmotions according to soil type. Extensive parametric studies carried out to investigate the performance of TMDs in controlling the nonlinear seismicinduced response of the structuralmodels. Drift ratio, story accelerations and the maximum displacement of roof level for each structure are considered for comparison purposes. The OpenSees program is used forthe required numerical analyses.

Keywords:

Tuned mass dampes (TMD) , structural models , Nonlinear behavior , Drift