Lateral Response Reduction of Tall Buildings Using Portal Frame as TMD

Majority of construction industries are aiming to go for taller and lighter buildings which may result in flexible and slender structures. Hence serviceability and safety become a critical issue during the occurrence of heavy winds and high magnitude earthquakes. Therefore, considerable techniques are adopted to minimize the vibrations caused by these natural responses of the structures. One of the techniques used prominently for tall structures is Tuned Mass Damper (TMD). TMD’s have been very effective in controlling structural vibrations. This study proposes a detailed analysis of a 2D frame structure with a TMD system placed at different levels of the structure in order to evaluate the behaviour of structure for given earthquake ground motions. The results obtained indicate installation of simple frames can decrease the response of the structure during an earthquake and location of TMD is also discussed in detail.