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Collision Behaviors Analysis of Sandwich Concrete Panel for Outer Shell of LNG Tank

LNG외조를 구성하는 샌드위치 콘크리트 패널의 충돌거동해석

  • Lee, Gye Hee (Dept of Ocean & Plant Construction Engineering, Mokpo National Maritime University)
  • 이계희 (목포해양대학교 해양.플랜트건설공학과)
  • Received : 2017.10.24
  • Accepted : 2017.11.13
  • Published : 2017.12.29

Abstract

In this study, the collision analysis of SCP(Sandwich Concrete Panel) composing the outer tank of LNG storage was performed and its collision behavior was analyzed. For the same collision energy value proposed in BS7777 code, the collision conditions are composed by using two types of missiles and various collision speeds. Nonlinear dynamic analysis models were constructed to perform numerical analysis on the various collision conditions. Also, the collision behavior was analyzed assuming that the second collision with the same collision energy occurs at the same point after the first collision. As a result of the analysis, it was found that with smaller missile and low collision speed had caused larger deformation. The collision energy dissipated in ratio of about 6: 4 in the outer steel plate and the inner filling concrete. In the results of double collision analysis, the final collisional deformation was dominated by the size of the second missile, and the amount of deformation due to the second collision was smaller than that of the first collision because of the membrane behavior of the steel plates. In the offset double collision cases, the largest deformation occurs at the secondary collision point regardless of the offset distance.

Acknowledgement

Supported by : 국토교통과학기술진흥원

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