• Title/Summary/Keyword: 비평형부력

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Estimation of the Design Member Forces in Very Large Concrete Floating Structure due to Wave Loads (파랑하중에 대한 초대형 콘크리트 부유식 구조물의 설계 부재력 산정)

  • Thanh, Nguyen Huu;Noh, Hyuk Chun;Kim, Seung Eock;Na, Seong Won
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.29 no.6A
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    • pp.641-650
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    • 2009
  • This paper presents new equations for member forces in concrete floating structures under wave loadings. The currently adopted design equations for wave loadings disregard the effect of mismatch between design wave length and the length of the structure. In most cases, however, additional internal forces occur due to disequilibriating buoyancy caused by the difference between design wave length and the length of the structure. In this study, new design equations considering the influence of the disequlibriating buoyancy is proposed. In addition, finite element solutions are sought to demonstrate the adequacy of the proposed design formulae in estimating the actual internal forces considering the structure as either rigid or flexible. It has been found that member forces are decreased approximately to around 55% for flexible model when compared with the rigid one.

Effect of Disequilibriating Buoyancy of Wave (파랑하중에 의한 비평형부력의 영향)

  • Park, Young-Hee;Noh, Hyuk-Chun;Kim, Seung-Eock;Na, Seong-Won
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2009.04a
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    • pp.319-322
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    • 2009
  • 콘크리트 부유구조물에서 파랑하중의 영향에 의하여 발생하는 부재내력 산정식을 제시하였다. 기존의 설계식은 구조물의 길이와 파장 길이가 일치할 때에 적용이 가능하다. 그러나 대부분의 경우 구조물의 길이와 파장 길이가 일치하지 않기 때문에 비평형 부력에 의한 추가적인 모멘트가 발생한다. 따라서 본 연구에서는 부유구조물을 강체로 가정하고 비평형 부력의 영향을 고려한 설계식을 제시하였고 이를 유한요소해석에 의한 결과와 비교하여 그 타당성을 보여주었다.

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