Structural Analysis for Design of Anchor Straps for a Large-Scale LNG Storage Tank with Corner Protection and Inner Tank

코너프로텍션과 내조를 고려한 대용량 LNG 저장탱크 앵커스트랩의 구조설계를 위한 유한요소해석

  • 김성주 (한양대학교 기계공학과) ;
  • 하성규 (한양대학교 기계공학과) ;
  • 김성종 (한양대학교 기계공학과) ;
  • 이영환 (한양대학교 기계공학과)
  • Received : 2011.04.18
  • Accepted : 2011.10.18
  • Published : 2011.12.01


Structural analysis is performed to design anchor straps for a large-scale-liquefied-natural-gas (LNG) storage tank with corner protection and an inner tank by considering structural integrity. Anchor straps made of 9% nickel steel are attached to the inner tank, corner protection, and concrete raft to prevent the failure of the inner tank during both normal and emergency operating conditions. Two finite element (FE) models were analyzed in this study. One is a stand-alone model of the anchor strap, while the other is an extended model of the substructure of the anchor strap, inner tank, and corner protection. Three-dimensional shell elements are used to effectively assess the bending and axial behavior of structures. The Tresca stress values in each part of the two models are calculated for operation under five different load-condition cases: normal operation, leakage of the LNG, hydro test, and two earthquake conditions.


LNG Storage Tank;Anchor Strap;Finite Element Analysis;Tresca Stress


Supported by : LNG 플랜트사업단


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