Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

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

DOI QR Code

A Parametric Study on the Seismic Response Analysis of LNG Storage Tank with Disconnected Pile Foundation Subjected to Horizontal Seismic Input Considering Fluid-Structure-Soil Interaction

유체-구조물-지반 상호작용을 고려한 비결합 말뚝기초에 지지된 LNG 저장탱크의 수평지진입력에 대한 지진응답 매개변수해석

  • Son, Il-Min (Department of Architecture and Civil Engineering, Graduate School, Chonnam National University) ;
  • Kim, Jae-Min (Department of Civil Engineering, Chonnam National University)
  • 손일민 (전남대학교 일반대학원 건축토목공학과) ;
  • 김재민 (전남대학교, 토목공학과)
  • Received : 2023.08.15
  • Accepted : 2023.11.27
  • Published : 2024.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study performed the seismic response analysis of an LNG storage tank supported by a disconnected piled raft foundation (DPRF) with a load transfer platform (LTP). For this purpose, a precise analytical model with simultaneous consideration of Fluid-Structure Interaction (FSI) and Soil-Structure Interaction (SSI) was used. The effect of the LTP characteristics (thickness, stiffness) of the DPRF system on the seismic response of the superstructure (inner and outer tanks) and piles was analyzed. The analytical results were compared with the response of the piled raft foundation (PRF) system. The following conclusions can be drawn from the numerical results: (1) The DPRF system has a smaller bending moment and axial force at the head of the pile than the PRF system, even if the thickness and stiffness of the LTP change; (2) The DPRF system has a slight stiffness of the LTP and the superstructure member force can increase with increasing thickness. This is because as the stiffness of the LTP decreases and the thickness increases, the natural frequency of the LTP becomes closer to the natural frequency of the superstructure, which may affect the response of the superstructure. Therefore, when applying the DPRF system, it is recommended that the sensitivity analysis of the seismic response to the thickness and stiffness of the LTP must be performed.

Keywords

References

  1. Veletsos AS, Tang Y. Soil-Structure Interaction Effects for Laterally Excited Liquid Storage Tanks. Earthquake Engineering & Structural Dynamics. 1990;19:473-496. https://doi.org/10.1002/eqe.4290190402
  2. Kim JM, Chang SH, Yun CB. Fluid-Structure-Soil Interaction Analysis of Cylindrical Liquid Storage Tanks Subjected to Horizontal Earthquake Loading. Structural Engineering and Mechanics. 2002;13(6):615-638. https://doi.org/10.12989/SEM.2002.13.6.615
  3. Simonelli AL, Di Sarno L, Durante MG, Sica S, Bhattacharya S, Dietz M, Dihoru L, Taylor CA, Cairo R, Chidichimo A, Dente G, Anoyatis G, Mylonakis G, Modaressi A, Todo Bom LA, Kaynia AM. Performance of Soil-Pile-Structure Systems Under Seismic Waves. Proc. of Int. Conf. on Performance-Based Design in Earthquake Geotechnical Engineering. Taormina; c2012.
  4. KS B 6283. Design Requirements for Wind Pressure-Proof and Earthquake-Proof of Liquid Storage Tanks; c2021 (In Korean).
  5. KGS GC 203. Code for Seismic Design of Gas Facilities and Aboveground Pipes; c2022 (In Korean).
  6. API 650. Welded Tanks for Oil Storage, American Petroleum Institute; c2013.
  7. Eurocode 8. Design of Structures for Earthquake Resistance, Part 4: Silos. Tanks and Pipelines, European Committee for Standardization. Brussels; c2006.
  8. Varaksin S, Hamidi B, Huybrechts N, Denies N. Ground Improvement vs. Pile Foundations. Proc. of ISSMGE-ETC3. Belgium; c2016.
  9. Bernuy C, Hor B, Kim S, Song M, Alqoud SY. LNG Tanks on Rigid Inclusions: Kuwait. Innovative Infrastructure Solutions. 2018;3:1-12. https://doi.org/10.1007/s41062-017-0104-5
  10. Son IM. Seismic Response Analysis of LNG Storage Tank with Disconnected Pile Foundation Considering Fluid-Structure-Soil Interaction. Ph.D. Thesis. Jeonnam National University; c2023 (In Korean).
  11. Hor B, Jee SH, Song MJ, Kim DY. Ground Improvement Using Rigid Inclusion for the Foundation of LNG Tanks. Proc. of the 19th Int. Conf. on Soil Mechanics and Geotechnical Engineering; c2017.
  12. Sharari N, Fatahi B, Hokmabadi AS, Xu R. Impacts of Pile Foundation Arrangement on Seismic Response of LNG Tanks Considering Soil-Foundation-Structure Interaction. Journal of Performance of Constructed Facilities. 2022;36(1):04021110.
  13. ASCE 4-16. Seismic Analysis of Safety- Related Nuclear Structures and Commentary, ASCE; c2017.
  14. Kim JM, Son IM, Kang BR, Yun CB, Chung MJ. A Simplified Analysis Model for Seismic Analysis of Pile-Supported Cylindrical Liquid Storage Tank Considering Fluid-Structure-Soil Interaction. J. Korean Soc. Hazard Mitig. 2015;15(4):203-214 (In Korean). https://doi.org/10.9798/KOSHAM.2015.15.4.203
  15. Kramer SL. Geotechnical Earthquake Engineering. Prentice-Hall, Englewood Cliffs; c1996.
  16. Seo CG, Kim JM. KIESSI Program for 3-D Soil-Structure Interaction Analysis. Computational Structural Engineering. 2012;25(3):77-83 (In Korean).
  17. Kim JM. Development of World-Best Fundamental Technologies for Nonlinear Fluid Structure Soil Interaction Analysis by Developing p-version Dynamic Infinite Elements and Performing Sloshing Shaking Table Tests. Report No. 19IFIP-C113546-04. Chonnam National University; c2016 (In Korean).
  18. NRC. SRP 3.7.2. Seismic System Analysis, US Nuclear Regulatory Commission; c2012.
  19. Sim WS. Development of modular LNG tank with small and medium capacity. Report No. 14CTAP-C077514-01. Korea Shipbuilding & Offshore Engineering Co.; c2019 (In Korean).
  20. KDS 17 10 00. Seismic Design General, Korea Construction Standards Center. Ministry of Land, Infrastructure and Transport, Korea; c2018 (In Korean).
  21. Schnabel PB, Lysmer J, Seed HB. SHAKE91, A Computer Program for Earthquake Response Analysis of Horizontal Layered Sites. EERC (Earthquake Engineering Research Center), College of Engineering, University of California Berkeley, California; c1991.
  22. Yoon BY. Load-Settlement and Load-Sharing Mechanism of Disconnected Pile Raft Foundation System. Ph.D. Thesis. Korea University; c2023.
  23. Jimenez GAL, Dias, D. Dynamic Soil-Structure Interaction Effects in Buildings Founded on Vertical Reinforcement Elements. Civil Eng. 2022;3(3):573-593. https://doi.org/10.3390/civileng3030034