センターポンツ-ン付きシングルデッキ形浮屋根の雨水滞留による変形解析

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  • Deformation Analysis of a Single-Deck Floating Roof with Center Pontoon under Accumulated Rain Water Condition
  • センターポンツーン ツキ シングルデッキケイ ウキヤネ ノ ウスイ タイリュウ ニ ヨル ヘンケイ カイセキ

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The floating roofs are used in aboveground oil storage tanks to prevent evaporation of the content. The single-deck floating roof consists of a thin circular plate called a deck attached to a buoyant ring of box-shaped cross section called a pontoon. In large diameter tanks, a center pontoon may be attached on the center of deck plate of the single-deck floating roof. The center pontoon is a small cylinder with cone roof, and is considered to reduce the risk of pontoon buckling under the accumulated rain water condition. This paper describes the deformation analysis of the single-deck floating roofs with center pontoon under the accumulated rain water condition using the axisymmetric shell finite element method. The load incremental method, in which the equivalent nodal forces due to the rain water converges to identify to the rain water load derived from the deflected deck shape, is used.

収録刊行物

  • 圧力技術

    圧力技術 48 (5), 264-275, 2010

    一般社団法人 日本高圧力技術協会

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