散货船和油船的结构冗余度及其验证

摘要

Based on relevant IMO regulations of hull structural redundancy, this paper studies the verification of the structural redundancy in IACS CSR-H rules satisfying the functional requirements in GBS IMO (Goal-based Ship Construction Standards) and proposes a technique procedure, including explanation of structural redundancy, damage assumption, load conditions, nonlinear finite element method, evaluation criteria, application flowchart, and verification of actual bulk carriers and oil tankers designed according CSR-H. All the computational results show that the actual ships satisfy the evaluation criteria of structural redundancy. That is to say, CSR-H implicitly provides necessary structural redundancy which is in compliance with IMO GBS requirements, and it is not necessary to introduce additional requirements of reinforcements into CSR-H.%基于国际船级社协会的《散货船和双壳油船协调共同结构规范》（CSR-H），提出了满足 IMO GBS 结构冗余度功能验证导则的技术路线和评估流程，包括问题分类、损坏假定、载荷情形、非线性有限元垮塌分析方法和结构冗余度衡准的建立，并实施了实船验算。计算结果表明，按照 CSR-H 规范设计的油船和散货船结构能够满足“任一加强筋的单一局部损伤不会导致整个加筋板格垮塌”的强度要求，具有适当的结构冗余度。新 CSR-H 规范无需再专门为结构冗余度而补充结构加强的要求。