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With the large increase in the size of ships since 1965, many kinds of damage on the transverse strength members, especially on the transverse rings of tankers, appeared. Initially the web plate of the transverse ring buckled under water pressure tests. Then cracks appeared at slotsSlot where the load is transmitted to the transverse web from the longitudinal stiffeners. This chapter explains how the hull structure designers established their own design standards for new designs based on the girder damage experienced in ships in service. In addition, comprehensive formulae for slot strength calculation are explained to estimate accurate load distribution among web stiffener, transverse web, and collar plate.

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Damage of Girders

  • 章节

  • 发表日期：

    2026年

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  • Yasuhisa Okumoto,
  • Tetsuo Okada,
  • Yu Takeda,
  • Masaki Mano,
  • Masanobu Toyoda

摘要

With the large increase in the size of ships since 1965, many kinds of damage on the transverse strength members, especially on the transverse rings of tankers, appeared. Initially the web plate of the transverse ring buckled under water pressure tests. Then cracks appeared at slotsSlot where the load is transmitted to the transverse web from the longitudinal stiffeners. This chapter explains how the hull structure designers established their own design standards for new designs based on the girder damage experienced in ships in service. In addition, comprehensive formulae for slot strength calculation are explained to estimate accurate load distribution among web stiffener, transverse web, and collar plate.