Abstract: Since the International Convention for the Safety of Life at Sea (SOLAS) came into force in 1974, watertight doors and fireproof doors have become an indispensable and important part of sea-going ships as a means to ensure the safety of crew. The design of the large marine fireproof watertight doors has the higher requirements along with the gradual improvement in the design of cargo ships and large warships. An L-type marine low-threshold A-60 fireproof watertight door with high accessibility is designed for large ships, and the finite element analysis of the door leaf structure is carried out and used as a reference for the design of the large fireproof watertight doors.

Key words: watertight door, A-60 fireproof, finite element analysis

摘要： 自1974年国际海上人命安全公约（以下简称“公约”）生效以来,船用水密门和防火门作为保障船员生命安全的手段,成为海船上一项必不可少的重要配件。随着海洋货运船舶和大型舰艇的设计能力逐步提高,对大型船用防火水密门的设计也提出了更高要求。针对大型船舶设计一种具备高通过性的L型船用低门槛A-60级防火水密门,并对门页结构进行有限元分析,对大型防火水密门的设计提供一定参考。

关键词: 水密门, A-60防火, 有限元分析