Computers and Concrete

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Analytical study of failure damage to 270,000-kL LNG storage tank under blast loading

  • Lee, Sang Won (Department of Civil and Environmental Engineering, Yonsei University) ;
  • Choi, Seung Jai (Department of Civil and Environmental Engineering, Yonsei University) ;
  • Kim, Jang-Ho Jay (Department of Civil and Environmental Engineering, Yonsei University)
  • Received : 2015.09.30
  • Accepted : 2015.12.04
  • Published : 2016.02.25
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Abstract

The outer tank of a liquefied natural gas (LNG) storage tank is a longitudinally and meridianally 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.

Keywords

Acknowledgement

Supported by : Nuclear Safety and Security Commission (NSSC), Ministry of Land, Infrastructure and Transport of the Korean Government

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