Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
권호 표지
DOI QR코드

DOI QR Code

Seismic Design Force for Rectangular Water Tank with Flexible Walls

유연한 벽면을 가진 사각형 물탱크의 설계지진력 산정

  • Kim, Min Woo (Department of Architectural Engineering, Hanyang University) ;
  • Yu, Eunjong (Department of Architectural Engineering, Hanyang University) ;
  • Park, Ji-Hun (Division of Architecture and Urban Design, Incheon National University)
  • 김민우 (한양대학교 건축공학과) ;
  • 유은종 (한양대학교 건축공학과) ;
  • 박지훈 (인천대학교 도시건축학부)
  • Received : 2023.09.19
  • Accepted : 2023.10.04
  • Published : 2023.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

The equivalent static load for non-structural elements has a limitation in that the sloshing effect and the interaction between the fluid and the water tank cannot be considered. In this study, the equations to evaluate the impulse and convective components in the design codes and previous research were compared with the shaking table test results of a rectangular water tank with flexible wall panels. The conclusions of this study can be summarized as follows: (1) It was observed that the natural periods of the impulsive component according to ACI 350.3 were longer than system identification results. Thus, ACI 350.3 may underestimate the earthquake load in the case of water tanks with flexible walls. (2) In the case of water tanks with flexible walls, the side walls deform due to bending of the front and back walls. When such three-dimensional fluid-structure interaction was included, the natural period of the impulsive component became similar to the experimental results. (3) When a detailed finite element (FE) model of the water tank was unavailable, the assumption Sai = SDS could be used, resulting in a reasonably conservative design earthquake load.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음(과제번호: RS-2021-KA163162)

References

  1. KDS 41 17 00. Seismic Building Design Code. Korea Construction Standards Center; c2019.
  2. Seismic Design Criteria for Fire Protection System. National Fire Agency; c2021.
  3. American Concrete Institute. Seismic Design of Liquid-Containing Concrete Structures and Commentary (ACI 350.3-20). USA; c2020.
  4. Housner G.W. The Dynamic Behavior of Water Tanks. Bulletin of the Seismological Society of America. 1963;53(2):381-387. https://doi.org/10.1785/BSSA0530020381
  5. Haroun M.A. Vibration Studies and Tests of Liquid Storage Tanks. Earthquake Engineering and Structural Dynamics. 1983;11:179-206. https://doi.org/10.1002/eqe.4290110204
  6. Choi HS, Park DU, Kim SW, Kim JM, Baek ER. Estimation of dynamic properties of steel liquid storage tank by shaking table test. EESK J. Earthquake Eng. 2017 Jan;21(4):153-161. https://doi.org/10.5000/EESK.2017.21.4.153
  7. European Committee for Standardization. Eurocode 8: Design of structures for earthquake resistance - Part 4: Silos, tanks and pipelines; c2006.
  8. Lee JH, Cho JR, Simplified Analysis of Rectangular Liquid Storage Tanks Considering Fluid-Structure Interaction, EESK J Earthquake Eng. 2022;26(5):203-209. https://doi.org/10.5000/EESK.2022.26.5.203
  9. Hashemi S, Saadatpour MM, Kianoush MR. Dynamic behavior of flexible rectangular fluid containers.Thin-walled structures. 2013 May;66:23-38. https://doi.org/10.1016/j.tws.2013.02.001
  10. Park JH. Dynamic analysis of rectangular liquid storage structures with analytic solution of fluid motion. KSCE Journal of Civil and Environmental Engineering Research. 2004;24:73-78.
  11. Koh HM, Kim JW, Park JH. Fluid-Structure Interaction Analysis of 3-D Rectangular Tanks by a Variationally Coupled BEM-FEM and Comparison with Test Results. Earthquake Engineering and Structural Dynamics. 1998;27:109-124. https://doi.org/10.1002/(SICI)1096-9845(199802)27:2<109::AID-EQE714>3.0.CO;2-M
  12. Park JH, Yu EJ, Ahn SJ, Kim SW, Hong YS, Kim MW, Kim JH. Verification of seismic performance of stainless steel panel type water tank. Inchon Univ.; c2023.