Abstract: “Tuned Mass Dampers (TMDs) have been found to be effective in controlling the responses of flexible tall structures subjected to earthquake ground excitations. In the present paper, the performance of single TMD and multiple TMD (MTMD) in reducing the seismic vibrations induced in structures are studied. The structure considered is a ten-storey RC building frame available in literature. Structures with and without TMDs subjected to different recorded earthquake ground motions are considered. Controlled responses of structures with TMDs and MTMDs are compared with the uncontrolled responses. It is observed that both the TMDs and MTMDs are able to reduce the vibrations in structures caused by earthquakes; however, the MTDMs are found to be more effective in reducing the responses of structures. From the present study it is concluded that, the performance of the tuned mass dampers depend on the characteristics of the ground motion to a great extent and a parametric study to investigate thi”

Keywords: Tuned mass damper (TMD), MTMD, earthquake.