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http://dx.doi.org/10.7734/COSEIK.2020.33.6.383

Time-Domain Earthquake Response Analysis of Rectangular Liquid Storage Tank Considering Fluid-Structure-Soil Interaction  

Lee, Jin Ho (Department of Ocean Engineering, Pukyong National Univ.)
Cho, Jeong-Rae (Seismic Safety Research Center, Korea Institute of Civil Engineering and Building Technology)
Han, Seong-Wook (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.6, 2020 , pp. 383-390 More about this Journal
Abstract
Since the dynamic behaviors of liquid storage tanks on flexible soil are significantly influenced by the fluid-structure-soil interaction (FSSI), its effects must be rigorously considered for accurate earthquake analysis and seismic design of the storage system. In this study, dynamic analysis is performed for a rectangular liquid storage tank on flexible soil, and its dynamic characteristics are examined by rigorously considering the effects of FSSI. The hydrodynamic force and the interaction force between the structure and soil are evaluated using the finite-element approach. In the evaluations, mid-point integrated finite elements and viscous dampers are considered for energy radiation into the infinite soil. The effective earthquake force is then obtained from free-field analysis. It is thus demonstrated that the earthquake responses of the rectangular liquid storage tank on flexible soil are significantly influenced by the FSSI.
Keywords
rectangular liquid storage tank; fluid-structure interaction; soil-structure interaction; impulsive mode; convective mode;
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Times Cited By KSCI : 6  (Citation Analysis)
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