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Title |
Analytical Assessment of Blast Damage of 270,000-kL LNG Storage Outer Tank According to Explosive Charges
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Authors |
김장호(Jang-Ho Jay Kim) ; 최승재(Seung-Jai Choi) ; 최지훈(Ji-Hun Choi) ; 김태균(Tae-Kyun Kim) ; 이태희(Tae-Hee Lee) |
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DOI |
https://doi.org/10.4334/JKCI.2016.28.6.685 |
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Keywords |
LNG 저장탱크 ; 폭발 하중 해석 ; LS-DYNA ; 방호설계 ; 프리스트레스트 콘크리트 LNG storage tank ; blast analysis ; LS-DYNA ; protective design ; pre-stressed concrete |
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Abstract |
The outer tank of a liquefied natural gas (LNG) storage tank is a longitudinally and meridionally pre-stressed concrete (PSC) wall structure. Because of the current trend of constructing larger LNG storage tanks, the pre-stressing forces required to increase wall strength must be significantly increased. Because of the increase in tank sizes and pre-stressing forces, an extreme loading scenario such as a bomb blast or an airplane crash needs to be investigated. Therefore, in this study, the blast resistance performance of LNG storage tanks was analyzed by conducting a blast simulation to investigate the safety of larger LNG storage tanks. Test data validation for a blast simulation of reinforced concrete panels was performed using a specific FEM code, LS-DYNA, prior to a full-scale blast simulation of the outer tank of a 270,000-kL LNG storage tank. Another objective of this study was to evaluate the safety and serviceability of an LNG storage tank with respect to varying amounts of explosive charge. The results of this study can be used as basic data for the design and safety evaluation of PSC LNG storage tanks.
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