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http://dx.doi.org/10.7734/COSEIK.2020.33.1.45

Characteristics of Earthquake Responses of a Rectangular Liquid Storage Tanks Subjected to Bi-directional Horizontal Ground Motions  

Lee, Jin Ho (Department of Ocean Engineering, Pukyong National Univ.)
Lee, Se Hyeok (Seismic Safety Research Center, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.33, no.1, 2020 , pp. 45-53 More about this Journal
Abstract
Analytical and experimental studies show that the dynamic behavior of liquid storage tanks is significantly influenced by the fluid-structure interaction (FSI). The effects of FSI must be rigorously considered for accurate earthquake analysis and seismic design of liquid storage tanks. In this study, a dynamic analysis of a rectangular liquid storage tank subjected to bi-directional earthquake ground motions is performed and its dynamic characteristics are examined, with the effects of FSI rigorously considered. Hydrodynamic pressure is evaluated using the finite-element approach with acoustic elements and applied to the structure. The responses of the rectangular tank subjected to bi-directional earthquake ground motions are thus obtained. It can be observed that the incident angle of bi-directional horizontal ground motions has significant effects on the dynamic responses of the considered system. Therefore, the characteristics of the system must be considered in its seismic design and performance evaluation.
Keywords
rectangular liquid storage tank; fluid-structure interaction; bi-directional ground motion; earthquake response; combination of earthquake responses;
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Times Cited By KSCI : 2  (Citation Analysis)
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