Masters Thesis

Multiple tuned mass damper in tall buildings

Tall structures are subject to dynamic excitations from wind and seismic loads. In this study, the efficiency of utilizing MTMDs in a 20 story height building are tested with special attention given to the seismic response due to the distribution of TMDs across a given story and through the elevation. The story displacements, shear force, and acceleration results showed that TMDs can dramatically dissipate energy in structures when they are used in groups with various distribution. The study indicates that, firstly, whatever the amount of total TMD mass increases, the reduction in structural dynamic response also increases. Secondly, the vertical distribution of MTMD is more effective in controlling the performance of structures than horizontal distribution, especially under ground motions with short wavelength. And lastly, the most optimum distribution of TMDs is on the floor plan and through the elevation of the model at the same time in order to have the most controlled behavior.

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