Non Linear Analysis of Multistorey Buildings Having Water Tank as Tuned Mass Damper

Globally, urban cities have witnessed rapid industrialization due to which requirement of new commercial and residential space have arises and to keep a pace with that, buildings are growing in to the skyscraper structures. In addition, the architectural innovation has led to the use of many materials and technology to enhance the aesthetical appearance of the building. Use of Lightweight, high-strength materials, welded connections has significantly affected the sensitivity of structures to the response of seismic and wind forces. Structural vibrations caused by wind or earthquakes are providing additional damping in the structural system which has caused severe damage to the non-structural element as well as the structural elements leading to the loss of human life as a result of collapse of buildings and severe structural damages. Therefore, to prevent the multistorey buildings from collapse and crucial damages, structural engineers are practicing seismic response control methods based on vibration suppressing elements. A tuned mass damper (TMD) is a device consisting of a mass, a spring, and a damper that is attached to a structure in order to reduce the dynamic response of the structure. The object of the present work is to study the behaviour of multistorey buildings having tuned mass damper (TMD) as Tuned liquid damper (TLD), where the mass is replaced by liquid (generally water). For this purpose, two cases of multi-storey buildings are considered having 12 storey and 15 storey. These two cases are considered having Tuned Mass Damper (TMD) provided with different shapes of water tank and Water-depth ratio, excitation frequency for zone IV by using software Staad-Pro with dynamic analysis methods. Observation shows that the provision of Tuned Mass Damper (TMD) is advantageous in increasing FSI of the building. From the results, it is observed that by the use of Tuned Mass Damper, Storey Drift and Lateral Displacement, Time Period and Frequency values reduces in all the models