Journal
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
Volume 90, Issue -, Pages 183-195Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.soildyn.2016.08.037
Keywords
Hybrid control method; Liquid storage tank; Viscous mass damper; Liquid sloshing
Funding
- National Natural Science Foundation of China [51308418, 51478357]
- Shanghai Committee of Science and Technology [10DZ2252000]
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In this study, a hybrid method, which simultaneously adjusts structural mass, stiffness, and damping, is proposed to reduce the sloshing of cylindrical tanks under ground motions induced by earthquakes. For this purpose, a viscous mass damper (VMD) is used with a rubber bearing to develop the hybrid control system. Modal and time history analyses are conducted for tanks by using the proposed method. In addition, parametric studies are conducted to investigate the effects of aspect ratio, mass, and damping of the VMD. It is observed that the sloshing heights of the liquid, base shears, and overturning moments of the tanks are reduced through the application of the proposed method. For both slender and broad tanks, the sloshing heights are controlled and the sloshing height can be reduced more in a broad tank. Additionally, a larger equivalent mass of the VMD can help in reducing the sloshing height. (C) 2016 Elsevier Ltd. All rights reserved.
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