Article(id=1242150711903990417, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242150711367119505, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2024.04.007, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1698422400000, receivedDateStr=2023-10-28, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774081407761, onlineDateStr=2026-03-21, pubDate=1713542400000, pubDateStr=2024-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774081407761, onlineIssueDateStr=2026-03-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774081407761, creator=13701087609, updateTime=1774081407761, updator=13701087609, issue=Issue{id=1242150711367119505, tenantId=1146029695717560320, journalId=1240685776644648972, year='2024', volume='28', issue='4', pageStart='479', pageEnd='636', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774081407634, creator=13701087609, updateTime=1774081679149, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1242151850229702738, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242150711367119505, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1242151850229702739, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242150711367119505, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=551, endPage=560, ext={EN=ArticleExt(id=1242150712109511314, articleId=1242150711903990417, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Reliability optimization design of river-sea-going ship hull structure based on agent model technology, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
In order to improve the efficiency of multi-parameter, high dimensional and high nonlinear optimization of ship structure reliability optimization design and make up the lack of uncertainty factors affecting structural safety in traditional deterministic optimization design, a river-sea-going ship was taken as the research object. BP (Back Propagation) neural network agent model technique and SMOTE (Synthetic Minority Oversampling Technique) algorithm were used to increase the number of sample points near the failure surface, in order to obtain a high-precision limit state agent model of ship structure with fewer sample points. Combined with Monte Carlo simulation method, the reliability calculation program of hull structure was developed. Structural reliability optimization analysis was performed adopting the simulated annealing optimization algorithm in order to reduce the structural weight. A set of complete and effective reliability optimization design system based on agent model technology was established to improve the efficiency of reliability optimization design, which has guiding significance to the reliability optimization design of river-sea-going ship structures.
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为提高船体结构可靠性优化设计这类多参数、高维度、高非线性优化问题的效率,弥补传统船体结构确定性优化设计对影响结构安全不确定性因素考虑的欠缺,本文以一艘江海直达船为研究对象,采用BP(Back Propagation)神经网络代理模型技术,结合SMOTE(Synthetic Minority Oversampling Technique)过采样算法增加极限状态失效面附近样本点数量,实现以较少的样本点获得较高精度的船体舱段结构极限状态代理模型,进而利用蒙特卡洛抽样模拟方法编制船体结构可靠度计算程序,在结构可靠性分析的基础上以降低船体舱段结构重量为目标,采用模拟退火优化算法开展船体结构可靠性优化设计。本文建立了一套完整有效的、基于代理模型技术的船体结构可靠性优化设计系统,有效提高了优化设计的效率,对江海直达船体结构可靠性优化设计具有指导意义。
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, authorsList=康煜晗, 裴志勇, 吴卫国)}, authors=[Author(id=1242150718111560475, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=384081198@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1242150718191252256, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, authorId=1242150718111560475, language=EN, stringName=Yu-han KANG, firstName=Yu-han, middleName=null, lastName=KANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1242150718258361123, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, authorId=1242150718111560475, language=CN, stringName=康煜晗, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.武汉理工大学 船海与能源动力工程学院,武汉 430063, bio={"content":"
康煜晗(1999-),女,硕士研究生,E-mail:384081198@qq.com
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2.Green & Smart River-Sea-Going Ship, Cruise and Yacht Research Centre, Wuhan University of Technology, Wuhan 430063, China
3.Hubei Province Engineering Research Center on Green & Smart River-Sea-Going Ship, Wuhan 430063, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1242150718518407988, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, authorId=1242150718325469992, language=CN, stringName=裴志勇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.武汉理工大学 绿色智能江海直达船舶与邮轮游艇研究中心,武汉 430063
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裴志勇(1974-),男,博士,教授,通讯作者,E-mail:zhiyong_pei@whut.edu.cn。
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裴志勇(1974-),男,博士,教授,通讯作者,E-mail:zhiyong_pei@whut.edu.cn。
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Hold structure finite element model of river-sea-going ship, figureFileSmall=mbSPY99BgJeaH4oJm/lmjA==, figureFileBig=HLZBwHo3T4rco7vBJ9Rexw==, tableContent=null), ArticleFig(id=1242150721903211414, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=图2, caption=
江海直达船舱段结构有限元模型, figureFileSmall=mbSPY99BgJeaH4oJm/lmjA==, figureFileBig=HLZBwHo3T4rco7vBJ9Rexw==, tableContent=null), ArticleFig(id=1242150721970320284, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=EN, label=Fig.3, caption=
Fitting effect of limit state function, figureFileSmall=WufD48qUQ2z1ipoPpKSEhw==, figureFileBig=qRwCk7YnjpDAKd7NbEgLFA==, tableContent=null), ArticleFig(id=1242150722041623456, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=图3, caption=
极限状态函数拟合效果, figureFileSmall=WufD48qUQ2z1ipoPpKSEhw==, figureFileBig=qRwCk7YnjpDAKd7NbEgLFA==, tableContent=null), ArticleFig(id=1242150722146481063, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=EN, label=Fig.4, caption=
Discriminant effect of limit state, figureFileSmall=DyeGONIgTLbzYDOOaI0BPw==, figureFileBig=E6TOUuybH0+p2wrkz547dw==, tableContent=null), ArticleFig(id=1242150722234561453, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=图4, caption=
极限状态判别效果, figureFileSmall=DyeGONIgTLbzYDOOaI0BPw==, figureFileBig=E6TOUuybH0+p2wrkz547dw==, tableContent=null), ArticleFig(id=1242150722326836143, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=EN, label=Fig.5, caption=
Optimized design variables, figureFileSmall=X1vdQ9bhR17ubKieUBbplQ==, figureFileBig=2sCd1n38zszIqwf3dTP3Fw==, tableContent=null), ArticleFig(id=1242150722423305141, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=图5, caption=
优化设计变量, figureFileSmall=X1vdQ9bhR17ubKieUBbplQ==, figureFileBig=2sCd1n38zszIqwf3dTP3Fw==, tableContent=null), ArticleFig(id=1242150722507191223, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=EN, label=Tab.1, caption=
Structural classification of agent models for Load Cases 1-3
, figureFileSmall=null, figureFileBig=null, tableContent=
| 平均等效应力 | 结构分类 | 许用应力/MPa | 剪切应力 | 结构分类 | 许用应力/MPa |
|---|
| σ1 | 甲板板、船底外板、内底板、舷侧外板、纵舱壁、边舱纵向平台 | 225/K | τ1 | 舷侧外板、纵舱壁、船底纵桁 | 115/K |
| σ2 | 船底纵桁 | 235/K | τ2 | 双层底肋板 | 90/K |
| σ3 | 双层底肋板、横舱壁桁材 | 175/K | τ3 | 横向强框架 | 95/K |
| σ4 | 横向强框架 | 195/K | τ4 | 横舱壁板 | 100/K |
| σ5 | 横舱壁板 | 180/K | | | |
), ArticleFig(id=1242150722582688699, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=表1, caption=
工况1~3代理模型结构分类
, figureFileSmall=null, figureFileBig=null, tableContent=
| 平均等效应力 | 结构分类 | 许用应力/MPa | 剪切应力 | 结构分类 | 许用应力/MPa |
|---|
| σ1 | 甲板板、船底外板、内底板、舷侧外板、纵舱壁、边舱纵向平台 | 225/K | τ1 | 舷侧外板、纵舱壁、船底纵桁 | 115/K |
| σ2 | 船底纵桁 | 235/K | τ2 | 双层底肋板 | 90/K |
| σ3 | 双层底肋板、横舱壁桁材 | 175/K | τ3 | 横向强框架 | 95/K |
| σ4 | 横向强框架 | 195/K | τ4 | 横舱壁板 | 100/K |
| σ5 | 横舱壁板 | 180/K | | | |
), ArticleFig(id=1242150722670769091, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=EN, label=Tab.2, caption=
Structural classification of agent models for Load Cases 4-5
, figureFileSmall=null, figureFileBig=null, tableContent=
| 平均等效应力 | 结构分类 | 许用应力/MPa | 剪切应力 | 结构分类 | 许用应力/MPa |
|---|
| σ1 | 舷侧外板、纵舱壁、边舱纵向平台、双层底肋板、横舱壁桁材、甲板横向抗扭箱 | 175/K | τ1 | 舷侧外板、纵舱壁、边舱纵向平台、双层底肋板、甲板横向抗扭箱 | 90/K |
| σ2 | 横向强框架 | 195/K | τ2 | 横向强框架 | 95/K |
), ArticleFig(id=1242150722742072262, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=表2, caption=
工况4、5代理模型结构分类
, figureFileSmall=null, figureFileBig=null, tableContent=
| 平均等效应力 | 结构分类 | 许用应力/MPa | 剪切应力 | 结构分类 | 许用应力/MPa |
|---|
| σ1 | 舷侧外板、纵舱壁、边舱纵向平台、双层底肋板、横舱壁桁材、甲板横向抗扭箱 | 175/K | τ1 | 舷侧外板、纵舱壁、边舱纵向平台、双层底肋板、甲板横向抗扭箱 | 90/K |
| σ2 | 横向强框架 | 195/K | τ2 | 横向强框架 | 95/K |
), ArticleFig(id=1242150722834346952, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=EN, label=Tab.3, caption=
Structural classification of agent models for Load Case 6
, figureFileSmall=null, figureFileBig=null, tableContent=
| 平均等效应力 | 结构分类 | 许用应力/MPa |
|---|
| σ1 | 纵舱壁、边舱纵向平台、横舱壁桁材、甲板横向抗扭箱 | 175/K |
), ArticleFig(id=1242150722897261515, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=表3, caption=
工况6代理模型结构分类
, figureFileSmall=null, figureFileBig=null, tableContent=
| 平均等效应力 | 结构分类 | 许用应力/MPa |
|---|
| σ1 | 纵舱壁、边舱纵向平台、横舱壁桁材、甲板横向抗扭箱 | 175/K |
), ArticleFig(id=1242150722972758991, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=EN, label=Tab.4, caption=
Effect of SMOTE algorithm
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样本类型 | 样本数量 | 极限状态代理模型效果 |
|---|
| 训练集 | 测试集 | RMSE | R2 | Accuracy |
|---|
| SMOTE样本 | 700 | 100 | 1.899 | 0.994 | 96% |
| 非SMOTE样本 | 700 | 1.694 | 0.997 | 91% |
), ArticleFig(id=1242150723039867860, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=表4, caption=
SMOTE算法效果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样本类型 | 样本数量 | 极限状态代理模型效果 |
|---|
| 训练集 | 测试集 | RMSE | R2 | Accuracy |
|---|
| SMOTE样本 | 700 | 100 | 1.899 | 0.994 | 96% |
| 非SMOTE样本 | 700 | 1.694 | 0.997 | 91% |
), ArticleFig(id=1242150723111171031, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=EN, label=Tab.5, caption=
Optimization design variables and random variables
, figureFileSmall=null, figureFileBig=null, tableContent=
| 优化设计变量 | 随机变量 | 优化设计变量 | 随机变量 |
|---|
| 编号 | 内容 | 编号 | 内容 | 编号 | 内容 | 编号 | 内容 |
|---|
| X1 | 平板龙骨 | P1 | 平板龙骨 | | | P21 | W(外舷纵骨平台下) |
| X2 | 船底板 | P2 | 船底板 | X17 | 外舷纵骨平台下 | P22 | B(外舷纵骨平台下) |
| X3 | 舭列板 | P3 | 舭列板 | | | P23 | t(外舷纵骨平台下) |
| X4 | 舷侧外板 | P4 | 舷侧外板 | | | P24 | W(内舷纵骨平台下) |
| X5 | 舷顶列板 | P5 | 舷顶列板 | X18 | 内舷纵骨平台下 | P25 | B(内舷纵骨平台下) |
| X6 | 内舷板 | P6 | 内舷板 | | | P26 | t(内舷纵骨平台下) |
| X7 | 内舷顶列板 | P7 | 内舷顶列板 | | | P27 | W(外舷纵骨平台上) |
| X8 | 主甲板 | P8 | 主甲板 | X19 | 外舷纵骨平台上 | P28 | B(外舷纵骨平台上) |
| X9 | 舱口围板 | P9 | 舱口围板 | | | P29 | t(外舷纵骨平台上) |
| X10 | 舱口围板顶 | P10 | 舱口围板顶 | | | P30 | W(内舷纵骨平台上) |
| X11 | 内底板 | P11 | 内底板 | X20 | 内舷纵骨平台上 | P31 | B(内舷纵骨平台上) |
| X12 | 平台甲板 | P12 | 平台甲板 | | | P32 | t(内舷纵骨平台上) |
| X13 | 中底桁 | P13 | 中底桁 | | | P33 | W(平台纵骨) |
| X14 | 旁底桁 | P14 | 旁底桁 | X21 | 平台纵骨 | P34 | B(平台纵骨) |
| | P15 | W(船底纵骨) | | | P35 | t(平台纵骨) |
| X15 | 船底纵骨 | P16 | B(船底纵骨) | X22 | 主甲板纵骨 | P36 | L(主甲板纵骨) |
| | P17 | t(船底纵骨) | P37 | t(主甲板纵骨) |
| | P18 | W(内底纵骨) | X23 | 舱口围板纵骨 | P38 | L(舱口围板纵骨) |
| X16 | 内底纵骨 | P19 | B(内底纵骨) | P39 | t(舱口围板纵骨) |
| | P20 | t(内底纵骨) | — | — | P40 | 波浪弯矩 |
), ArticleFig(id=1242150723241194459, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=表5, caption=
优化设计变量与随机变量
, figureFileSmall=null, figureFileBig=null, tableContent=
| 优化设计变量 | 随机变量 | 优化设计变量 | 随机变量 |
|---|
| 编号 | 内容 | 编号 | 内容 | 编号 | 内容 | 编号 | 内容 |
|---|
| X1 | 平板龙骨 | P1 | 平板龙骨 | | | P21 | W(外舷纵骨平台下) |
| X2 | 船底板 | P2 | 船底板 | X17 | 外舷纵骨平台下 | P22 | B(外舷纵骨平台下) |
| X3 | 舭列板 | P3 | 舭列板 | | | P23 | t(外舷纵骨平台下) |
| X4 | 舷侧外板 | P4 | 舷侧外板 | | | P24 | W(内舷纵骨平台下) |
| X5 | 舷顶列板 | P5 | 舷顶列板 | X18 | 内舷纵骨平台下 | P25 | B(内舷纵骨平台下) |
| X6 | 内舷板 | P6 | 内舷板 | | | P26 | t(内舷纵骨平台下) |
| X7 | 内舷顶列板 | P7 | 内舷顶列板 | | | P27 | W(外舷纵骨平台上) |
| X8 | 主甲板 | P8 | 主甲板 | X19 | 外舷纵骨平台上 | P28 | B(外舷纵骨平台上) |
| X9 | 舱口围板 | P9 | 舱口围板 | | | P29 | t(外舷纵骨平台上) |
| X10 | 舱口围板顶 | P10 | 舱口围板顶 | | | P30 | W(内舷纵骨平台上) |
| X11 | 内底板 | P11 | 内底板 | X20 | 内舷纵骨平台上 | P31 | B(内舷纵骨平台上) |
| X12 | 平台甲板 | P12 | 平台甲板 | | | P32 | t(内舷纵骨平台上) |
| X13 | 中底桁 | P13 | 中底桁 | | | P33 | W(平台纵骨) |
| X14 | 旁底桁 | P14 | 旁底桁 | X21 | 平台纵骨 | P34 | B(平台纵骨) |
| | P15 | W(船底纵骨) | | | P35 | t(平台纵骨) |
| X15 | 船底纵骨 | P16 | B(船底纵骨) | X22 | 主甲板纵骨 | P36 | L(主甲板纵骨) |
| | P17 | t(船底纵骨) | P37 | t(主甲板纵骨) |
| | P18 | W(内底纵骨) | X23 | 舱口围板纵骨 | P38 | L(舱口围板纵骨) |
| X16 | 内底纵骨 | P19 | B(内底纵骨) | P39 | t(舱口围板纵骨) |
| | P20 | t(内底纵骨) | — | — | P40 | 波浪弯矩 |
), ArticleFig(id=1242150724767921123, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=EN, label=Tab.6, caption=
Optimization results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量序号 | 变量名称 | 初始方案 | 确定性优化结果 | 可靠性优化结果 |
|---|
| X1 | 平板龙骨 | 11 | 10.5 | 10.5 |
| X2 | 船底板 | 9 | 8.5 | 8.5 |
| X3 | 舭列板 | 10 | 9.5 | 10 |
| X4 | 舷侧外板 | 8 | 7 | 7.5 |
| X5 | 舷顶列板 | 12 | 11 | 11 |
| X6 | 内舷板 | 8 | 7.5 | 8 |
| X7 | 内舷顶列板 | 12 | 11 | 11 |
| X8 | 主甲板 | 12 | 11 | 11 |
| X9 | 舱口围板 | 12 | 11 | 11 |
| X10 | 舱口围板顶 | 12 | 11 | 11 |
| X11 | 内底板 | 7 | 7 | 7 |
| X12 | 平台甲板 | 6 | 5.5 | 5.5 |
| X13 | 中底桁 | 8 | 8 | 8 |
| X14 | 旁底桁 | 6 | 6 | 6 |
| X15 | 船底纵骨 | L100×80×7 | L100×80×7 | L110×70×7 |
| X16 | 内底纵骨 | L100×80×7 | L100×80×6 | L110×70×6 |
| X17 | 外舷纵骨下 | L110×70×6 | L100×80×6 | L110×70×7 |
| X18 | 内舷纵骨下 | L110×70×7 | L100×80×6 | L110×70×7 |
| X19 | 外舷纵骨上 | L90×56×6 | L75×50×6 | L90×56×5 |
| X20 | 内舷纵骨上 | L90×56×6 | L75×50×6 | L90×56×5 |
| X21 | 平台纵骨 | L75×50×6 | L63×40×5 | L75×50×5 |
| X22 | 主甲板纵骨 | —12×140 | —11×120 | —12×140 |
| X23 | 舱口围板纵骨 | —12×100 | —11×90 | —12×100 |
| Pr | 可靠度 | 1 | 0.991 73 | 0.999 999 952 |
| Pf | 失效概率 | 0 | 0.008 27 | 4.8E-08 |
| M | 舱段重量/kg | 363 958.3 | 345 366.2 | 352 313.5 |
| 舱段重量减少 | — | -5.108% | -3.199% |
), ArticleFig(id=1242150724881167333, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150711903990417, language=CN, label=表6, caption=
优化结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量序号 | 变量名称 | 初始方案 | 确定性优化结果 | 可靠性优化结果 |
|---|
| X1 | 平板龙骨 | 11 | 10.5 | 10.5 |
| X2 | 船底板 | 9 | 8.5 | 8.5 |
| X3 | 舭列板 | 10 | 9.5 | 10 |
| X4 | 舷侧外板 | 8 | 7 | 7.5 |
| X5 | 舷顶列板 | 12 | 11 | 11 |
| X6 | 内舷板 | 8 | 7.5 | 8 |
| X7 | 内舷顶列板 | 12 | 11 | 11 |
| X8 | 主甲板 | 12 | 11 | 11 |
| X9 | 舱口围板 | 12 | 11 | 11 |
| X10 | 舱口围板顶 | 12 | 11 | 11 |
| X11 | 内底板 | 7 | 7 | 7 |
| X12 | 平台甲板 | 6 | 5.5 | 5.5 |
| X13 | 中底桁 | 8 | 8 | 8 |
| X14 | 旁底桁 | 6 | 6 | 6 |
| X15 | 船底纵骨 | L100×80×7 | L100×80×7 | L110×70×7 |
| X16 | 内底纵骨 | L100×80×7 | L100×80×6 | L110×70×6 |
| X17 | 外舷纵骨下 | L110×70×6 | L100×80×6 | L110×70×7 |
| X18 | 内舷纵骨下 | L110×70×7 | L100×80×6 | L110×70×7 |
| X19 | 外舷纵骨上 | L90×56×6 | L75×50×6 | L90×56×5 |
| X20 | 内舷纵骨上 | L90×56×6 | L75×50×6 | L90×56×5 |
| X21 | 平台纵骨 | L75×50×6 | L63×40×5 | L75×50×5 |
| X22 | 主甲板纵骨 | —12×140 | —11×120 | —12×140 |
| X23 | 舱口围板纵骨 | —12×100 | —11×90 | —12×100 |
| Pr | 可靠度 | 1 | 0.991 73 | 0.999 999 952 |
| Pf | 失效概率 | 0 | 0.008 27 | 4.8E-08 |
| M | 舱段重量/kg | 363 958.3 | 345 366.2 | 352 313.5 |
| 舱段重量减少 | — | -5.108% | -3.199% |
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