Behavior of Structures Under Dynamic Loading Having Water Tank Designed as Tuned Mass Damper

International Journal of Civil Engineering

© 2022 by SSRG - IJCE Journal

Volume 9 Issue 6

Year of Publication : 2022

Authors : Virendrasinh Vaghela, Vishal Patel, Pratiti Bhatt

10.14445/23488352/IJCE-V9I6P106

How to Cite?

Virendrasinh Vaghela, Vishal Patel, Pratiti Bhatt, "Behavior of Structures Under Dynamic Loading Having Water Tank Designed as Tuned Mass Damper," SSRG International Journal of Civil Engineering, vol. 9,  no. 6, pp. 62-71, 2022. Crossref, https://doi.org/10.14445/23488352/IJCE-V9I6P106

Abstract:

The water tanks are essential structures in many buildings and can be used for many purposes. The liquid in the overhead tanks moves out of phase when the structure is experiencing seismic vibration. These energy dissipation phenomena are used in liquid sloshing dampers to reduce the seismic response of structures. Water tanks with an isolation system on the rooftop of the building can be utilized as tuned mass dampers (TMD). So here, it is tried to investigate the efficiency of the water tank with an isolation system as a tuned mass damper. The main advantage of this method is that it does not require any additional components other than the isolation component. This technology could be simple to set up and inexpensive. Three various heights of frames, G+4, G+9, and G+19, are analyzed in this study, each with a different water tank arrangement. Water tank capacity is found for residential buildings for 2 days as per I.S. standard recommendation. The LRB isolators have limited damping values, which is unfavorable for getting a desirable response. Dynamic seismic analysis is done by the response spectrum method in ETABS. As it is a case of non-classical damping, the dynamic analysis modal combination rules like Complete Quadratic Combination (CQC) and Square Root of Sum of Squares (SRSS) work efficiently. Results show that the applicability of this technique gives positive results, and structural response is reduced.

Keywords:

Dynamic seismic analysis, Rcc buildings, Seismic isolation, Tuned mass damper, Water tank.

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