Attaining Optimum Passive Control in Liquid-Storage Tank by Using Multiple Vertical Baffles
Publication: Practice Periodical on Structural Design and Construction
Volume 26, Issue 3
Abstract
The effect of vertical baffles as the passive control in liquid storage tanks (LSTs) on the reduction of seismic responses was investigated for bidirectional earthquake excitations. Various baffle configurations were considered for arriving at an optimum coupled arrangement of baffles in the LSTs. For this optimum arrangement of baffles, the change in various responses was studied for several parameters, namely the type, peak ground acceleration (PGA), and angle of incidence of earthquakes. A numerical study was conducted with two flexible concrete LSTs with dimensions and , and with a water level of 3.6 m in both LSTs. The responses included the maximum percentage change in base shear, overturning moment, top-board displacement, hydrodynamic pressure, and sloshing height. The results of the study showed that (1) with the optimum arrangement of baffles, a reduction on the order of 70% can be achieved in the sloshing height, (2) the type of earthquake does have some significant effect on response reductions, and (3) both PGA and angle of incidence of earthquakes have moderate effects on response reductions.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
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Published In
Practice Periodical on Structural Design and Construction
Volume 26 • Issue 3 • August 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Sep 7, 2020
Accepted: Feb 23, 2021
Published online: May 6, 2021
Published in print: Aug 1, 2021
Discussion open until: Oct 6, 2021
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