Article(id=1227591810156003816, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.202309064, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1695312000000, receivedDateStr=2023-09-22, revisedDate=1699459200000, revisedDateStr=2023-11-09, acceptedDate=null, acceptedDateStr=null, onlineDate=1770610295094, onlineDateStr=2026-02-09, pubDate=1757433600000, pubDateStr=2025-09-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770610295094, onlineIssueDateStr=2026-02-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770610295094, creator=13701087609, updateTime=1770610295094, updator=13701087609, issue=Issue{id=1227591806980915649, tenantId=1146029695717560320, journalId=1225147924628267009, year='2025', volume='38', issue='9', pageStart='1935', pageEnd='2204', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1770610294337, creator=13701087609, updateTime=1770610356968, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1227592069754057532, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1227592069754057533, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2182, endPage=2191, ext={EN=ArticleExt(id=1227591811552707062, articleId=1227591810156003816, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Time-dependent reliability prediction of bridge components with the fusion of BO-LSTM and Copula theory, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
There exists the nonlinear failure correlation among the multiple monitoring points of bridge components. Considering the influence of this factor on the reliability indices of the bridge, this paper adopts the Bayesian optimized long short-term memory (BO-LSTM) network model in machine learning to dynamically predict the monitoring data of the bridge, and establishes a three-dimensional Gaussian Copula model based on Copula theory to calculate the time-varying reliability indices and failure probability of the bridge construction. The rationality of the model and method is verified by applying the monitoring data of Fumin Bridge in Tianjin.
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桥梁构件的各个监测点之间存在着非线性失效动态相关性,为研究该因素对桥梁时变可靠指标的影响,建立了贝叶斯优化的长短期记忆(BO-LSTM)网络模型,对桥梁监测应力极值进行动态预测;建立考虑三个监测点失效非线性相关性的三元Gaussian Copula模型,对桥梁构件的时变可靠指标和时变失效概率进行预测,利用天津市富民桥的监测数据对模型与方法的合理性进行了验证分析。
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49(5): 624-633., articleTitle=Failure probability analysis of service long-span bridge girder based on optimal R-Vine Gaussian Copula model, refAbstract=null)], funds=[Fund(id=1227653081693881302, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, awardId=20JR10RA625, language=CN, fundingSource=甘肃省自然科学基金资助项目(20JR10RA625), fundOrder=null, country=null), Fund(id=1227653081786155997, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, awardId=20JR10RA623, language=CN, fundingSource=甘肃省自然科学基金资助项目(20JR10RA623), fundOrder=null, country=null), Fund(id=1227653081907790822, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, awardId=51608243, language=CN, fundingSource=国家自然科学基金资助项目(51608243), fundOrder=null, country=null), Fund(id=1227653082000065512, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, awardId=lzujbky-2025-05, language=CN, fundingSource=兰州大学中央高校基本科研业务费专项资金资助项目(lzujbky-2025-05), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1227653068276302267, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, xref=1., ext=[AuthorCompanyExt(id=1227653068293079484, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, companyId=1227653068276302267, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Cyclic unit structure of LSTM network, figureFileSmall=8sN36unncbYtO5ofc73Y3g==, figureFileBig=Iz7IHIzwEnFw5qGNh/qv9A==, tableContent=null), ArticleFig(id=1227653072588047022, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图1, caption=
LSTM网络的循环单元结构, figureFileSmall=8sN36unncbYtO5ofc73Y3g==, figureFileBig=Iz7IHIzwEnFw5qGNh/qv9A==, tableContent=null), ArticleFig(id=1227653072730653368, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 2, caption=
Layout diagram of strain measuring points in section A, figureFileSmall=pZuXZ+QW8pAEEo4H9IGz3A==, figureFileBig=E+w26qGJArRi1GovWr+sVw==, tableContent=null), ArticleFig(id=1227653072827122370, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图2, caption=
截面A应变测点布置图, figureFileSmall=pZuXZ+QW8pAEEo4H9IGz3A==, figureFileBig=E+w26qGJArRi1GovWr+sVw==, tableContent=null), ArticleFig(id=1227653072940368588, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 3, caption=
Establishment process of BO-LSTM model, figureFileSmall=H95qmVF5QCia+Kz3YEUEIQ==, figureFileBig=xc9nElvevpf8oRc23lRpJQ==, tableContent=null), ArticleFig(id=1227653073196221143, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图3, caption=
BO-LSTM模型建立流程, figureFileSmall=H95qmVF5QCia+Kz3YEUEIQ==, figureFileBig=xc9nElvevpf8oRc23lRpJQ==, tableContent=null), ArticleFig(id=1227653073322050267, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 4, caption=
Prediction curve of FBG01074 monitoring stress, figureFileSmall=sEgSj52d65wuBbzrQA8hxw==, figureFileBig=d+S04ZBum86i60IF9Ut28w==, tableContent=null), ArticleFig(id=1227653073498211049, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图4, caption=
FBG01074监测应力的预测曲线, figureFileSmall=sEgSj52d65wuBbzrQA8hxw==, figureFileBig=d+S04ZBum86i60IF9Ut28w==, tableContent=null), ArticleFig(id=1227653073607262961, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 5, caption=
Prediction effect diagram of FBG01074 monitoring stress, figureFileSmall=stFF/H1JBpy1V9vayYUDvQ==, figureFileBig=9sVyNGaG0ypSsHTcNAKm6Q==, tableContent=null), ArticleFig(id=1227653073733092088, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图5, caption=
FBG01074监测应力的预测效果图, figureFileSmall=stFF/H1JBpy1V9vayYUDvQ==, figureFileBig=9sVyNGaG0ypSsHTcNAKm6Q==, tableContent=null), ArticleFig(id=1227653073909252866, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 6, caption=
Prediction curve of FBG01081 monitoring stress, figureFileSmall=iG5P8r9QNgmlMHKSbkysJw==, figureFileBig=DGExnDLBZMxkdvT6BSl3mA==, tableContent=null), ArticleFig(id=1227653074030887689, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图6, caption=
FBG01081监测应力的预测曲线, figureFileSmall=iG5P8r9QNgmlMHKSbkysJw==, figureFileBig=DGExnDLBZMxkdvT6BSl3mA==, tableContent=null), ArticleFig(id=1227653074139939601, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 7, caption=
Prediction effect diagram of FBG01081 monitoring stress, figureFileSmall=ZMeftzpgPV2XFzDfzGbJog==, figureFileBig=X5mJba94z4Dhz4C0gJ/0kg==, tableContent=null), ArticleFig(id=1227653074244797207, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图7, caption=
FBG01081监测应力的预测效果图, figureFileSmall=ZMeftzpgPV2XFzDfzGbJog==, figureFileBig=X5mJba94z4Dhz4C0gJ/0kg==, tableContent=null), ArticleFig(id=1227653074362237727, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 8, caption=
Prediction curve of FBG01078 monitoring stress, figureFileSmall=aGAapZv+MbCWSkNb62J9ww==, figureFileBig=lKH6VQgGi9765DwWv/Fl0Q==, tableContent=null), ArticleFig(id=1227653074450318119, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图8, caption=
FBG01078监测应力的预测曲线, figureFileSmall=aGAapZv+MbCWSkNb62J9ww==, figureFileBig=lKH6VQgGi9765DwWv/Fl0Q==, tableContent=null), ArticleFig(id=1227653075842827054, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 9, caption=
Prediction effect diagram of FBG01078 monitoring stress, figureFileSmall=66mfObcmgJ8rSUa5CI71Rw==, figureFileBig=Vd2+7mnfLPBc9gzYgN/jjw==, tableContent=null), ArticleFig(id=1227653077797372725, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图9, caption=
FBG01078监测应力的预测效果图, figureFileSmall=66mfObcmgJ8rSUa5CI71Rw==, figureFileBig=Vd2+7mnfLPBc9gzYgN/jjw==, tableContent=null), ArticleFig(id=1227653077977727806, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 10, caption=
Comparison curves between predicted value and measured value of FBG01081 monitoring stress extremum, figureFileSmall=7bnpB4WvGDppFN+qWWZQGw==, figureFileBig=TwTMTJmuCAbtUIsYpqPtzw==, tableContent=null), ArticleFig(id=1227653078141305665, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图10, caption=
FBG01081监测应力极值预测值与实测值对比曲线, figureFileSmall=7bnpB4WvGDppFN+qWWZQGw==, figureFileBig=TwTMTJmuCAbtUIsYpqPtzw==, tableContent=null), ArticleFig(id=1227653078279717704, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 11, caption=
Reliability indices at monitoring points, figureFileSmall=ZqIdWmAfbSiVUo0edyrqoA==, figureFileBig=qcR2EnEBhRyslbhtXDhA+g==, tableContent=null), ArticleFig(id=1227653078405546830, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图11, caption=
监测点处的可靠指标, figureFileSmall=ZqIdWmAfbSiVUo0edyrqoA==, figureFileBig=qcR2EnEBhRyslbhtXDhA+g==, tableContent=null), ArticleFig(id=1227653078552347480, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 12, caption=
Time-varying reliability indices of structural system, figureFileSmall=JCaCbX/mCaEhgjWRb8SHfA==, figureFileBig=Pb+y+FXJtB2a78c6VPMoMg==, tableContent=null), ArticleFig(id=1227653078720119653, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图12, caption=
结构体系的时变可靠指标, figureFileSmall=JCaCbX/mCaEhgjWRb8SHfA==, figureFileBig=Pb+y+FXJtB2a78c6VPMoMg==, tableContent=null), ArticleFig(id=1227653078829171562, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Fig. 13, caption=
Time-varying failure probability of structural system, figureFileSmall=49mhPMIMATWuOwdvSz4yOQ==, figureFileBig=btUcn4TFpJhczN6kxRmQbQ==, tableContent=null), ArticleFig(id=1227653078950806382, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=图13, caption=
结构体系的时变失效概率, figureFileSmall=49mhPMIMATWuOwdvSz4yOQ==, figureFileBig=btUcn4TFpJhczN6kxRmQbQ==, tableContent=null), ArticleFig(id=1227653080334926715, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Tab. 1, caption=
Main contents of Bayesian optimization
, figureFileSmall=null, figureFileBig=null, tableContent=
| 主要部分 | 解释 |
|---|
| 目标函数 | 模型想要最小化的函数,本文中为LSTM模型中使用该组超参数在验证集上的损失大小 |
| 域空间 | 需要调优的超参数的取值范围,本文中为LSTM单元内隐藏层的尺寸大小,初始学习率和正则化参数 |
| 优化算法 | 构造代理函数并选择下一个超参数的方法,即采集函数 |
| 结果历史记录 | 目标函数评估的存储结果 |
), ArticleFig(id=1227653080460755838, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=表1, caption=
贝叶斯优化的主要内容
, figureFileSmall=null, figureFileBig=null, tableContent=
| 主要部分 | 解释 |
|---|
| 目标函数 | 模型想要最小化的函数,本文中为LSTM模型中使用该组超参数在验证集上的损失大小 |
| 域空间 | 需要调优的超参数的取值范围,本文中为LSTM单元内隐藏层的尺寸大小,初始学习率和正则化参数 |
| 优化算法 | 构造代理函数并选择下一个超参数的方法,即采集函数 |
| 结果历史记录 | 目标函数评估的存储结果 |
), ArticleFig(id=1227653080557224839, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Tab. 2, caption=
Unidirectional stress obtained by monitoring
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时间 | 单向应力/MPa |
|---|
| 监测点FBG01074 | 监测点FBG01081 | 监测点FBG01078 |
|---|
| 8/19 22:05 | −82.30232089 | −82.30232089 | −58.01665251 |
| 8/19 22:10 | −82.1034107 | −82.1034107 | −58.32982158 |
| 8/19 22:15 | −82.12141271 | −82.12141271 | −58.42480884 |
| 8/19 22:20 | −82.00086781 | −82.00086781 | −58.00050977 |
| 8/19 22:25 | −82.34377397 | −82.34377397 | −58.25301614 |
| 8/19 22:30 | −82.66322906 | −82.66322906 | −58.06762957 |
| 8/19 22:35 | −82.28304743 | −82.28304743 | −57.88581138 |
| 8/19 22:40 | −82.0634107 | −82.0634107 | −58.19898046 |
| 8/19 22:45 | −82.04141271 | −82.04141271 | −58.19745115 |
| 8/19 22:50 | −82.40304743 | −82.40304743 | −58.0671198 |
| 8/19 22:55 | −82.3845005 | −82.3845005 | −58.2353441 |
| 8/19 23:00 | −82.72522704 | −82.72522704 | −58.1039932 |
| ⋮ | ⋮ | ⋮ | ⋮ |
| 8/29 10:20 | −81.77184662 | −81.77184662 | −59.16618522 |
| 8/29 10:25 | −81.67039354 | −81.67039354 | −59.29957519 |
| 8/29 10:30 | −81.2843996 | −81.2843996 | −59.37841971 |
| 8/29 10:35 | −81.5643996 | −81.5643996 | −59.27187766 |
| 8/29 10:40 | −81.1007669 | −81.1007669 | −58.90773152 |
| 8/29 10:45 | −81.13786075 | −81.13786075 | −58.93305013 |
| 8/29 11:25 | −79.63061554 | −79.63061554 | −58.13338997 |
| 8/29 11:30 | −79.20607467 | −79.20607467 | −58.16227698 |
| 8/29 11:35 | −78.88207871 | −78.88207871 | −58.16890399 |
| 8/29 11:40 | −78.99953582 | −78.99953582 | −57.88258284 |
| 8/29 11:45 | −78.51535822 | −78.51535822 | −57.542226 |
| 8/29 11:50 | −78.43172553 | −78.43172553 | −57.7271028 |
| 8/29 11:55 | −78.16500505 | −78.16500505 | −57.59643161 |
), ArticleFig(id=1227653080653693842, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=表2, caption=
监测得到的单向应力
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| 时间 | 单向应力/MPa |
|---|
| 监测点FBG01074 | 监测点FBG01081 | 监测点FBG01078 |
|---|
| 8/19 22:05 | −82.30232089 | −82.30232089 | −58.01665251 |
| 8/19 22:10 | −82.1034107 | −82.1034107 | −58.32982158 |
| 8/19 22:15 | −82.12141271 | −82.12141271 | −58.42480884 |
| 8/19 22:20 | −82.00086781 | −82.00086781 | −58.00050977 |
| 8/19 22:25 | −82.34377397 | −82.34377397 | −58.25301614 |
| 8/19 22:30 | −82.66322906 | −82.66322906 | −58.06762957 |
| 8/19 22:35 | −82.28304743 | −82.28304743 | −57.88581138 |
| 8/19 22:40 | −82.0634107 | −82.0634107 | −58.19898046 |
| 8/19 22:45 | −82.04141271 | −82.04141271 | −58.19745115 |
| 8/19 22:50 | −82.40304743 | −82.40304743 | −58.0671198 |
| 8/19 22:55 | −82.3845005 | −82.3845005 | −58.2353441 |
| 8/19 23:00 | −82.72522704 | −82.72522704 | −58.1039932 |
| ⋮ | ⋮ | ⋮ | ⋮ |
| 8/29 10:20 | −81.77184662 | −81.77184662 | −59.16618522 |
| 8/29 10:25 | −81.67039354 | −81.67039354 | −59.29957519 |
| 8/29 10:30 | −81.2843996 | −81.2843996 | −59.37841971 |
| 8/29 10:35 | −81.5643996 | −81.5643996 | −59.27187766 |
| 8/29 10:40 | −81.1007669 | −81.1007669 | −58.90773152 |
| 8/29 10:45 | −81.13786075 | −81.13786075 | −58.93305013 |
| 8/29 11:25 | −79.63061554 | −79.63061554 | −58.13338997 |
| 8/29 11:30 | −79.20607467 | −79.20607467 | −58.16227698 |
| 8/29 11:35 | −78.88207871 | −78.88207871 | −58.16890399 |
| 8/29 11:40 | −78.99953582 | −78.99953582 | −57.88258284 |
| 8/29 11:45 | −78.51535822 | −78.51535822 | −57.542226 |
| 8/29 11:50 | −78.43172553 | −78.43172553 | −57.7271028 |
| 8/29 11:55 | −78.16500505 | −78.16500505 | −57.59643161 |
), ArticleFig(id=1227653080758551451, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Tab. 3, caption=
Optimal parameters of BO-LSTM model
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| 模型 | 参数名称 | 初始参数 | 最优参数 |
|---|
| 贝叶斯优化 | 优化时间(MaxTime) | — | Inf |
| 最大迭代次数(MaxObjectiveEvaluations) | — | 40 |
| LSTM模型 | 隐藏层节点(NumOfUnits) | 10 | 优化所得 |
| 优化算法 | adam | adam |
| 最大训练次数(MaxEpochs) | 800 | 800 |
| 梯度阈值(GradientThreshold) | 1 | 1 |
| 初始学习率(InitialLearnRate) | 0.001 | 优化所得 |
| 学习率调整轮次(LearnRateDropPeriod) | 700 | 700 |
| 学习率调整因子(LearnRateDropFactor) | 0.2 | 0.2 |
| 正则化参数L2(L2Regularization) | 2×10−10 | 优化所得 |
), ArticleFig(id=1227653080863409059, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=表3, caption=
BO-LSTM模型的最优参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 参数名称 | 初始参数 | 最优参数 |
|---|
| 贝叶斯优化 | 优化时间(MaxTime) | — | Inf |
| 最大迭代次数(MaxObjectiveEvaluations) | — | 40 |
| LSTM模型 | 隐藏层节点(NumOfUnits) | 10 | 优化所得 |
| 优化算法 | adam | adam |
| 最大训练次数(MaxEpochs) | 800 | 800 |
| 梯度阈值(GradientThreshold) | 1 | 1 |
| 初始学习率(InitialLearnRate) | 0.001 | 优化所得 |
| 学习率调整轮次(LearnRateDropPeriod) | 700 | 700 |
| 学习率调整因子(LearnRateDropFactor) | 0.2 | 0.2 |
| 正则化参数L2(L2Regularization) | 2×10−10 | 优化所得 |
), ArticleFig(id=1227653080964072362, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Tab. 4, caption=
Variation of each optimal parameter of BO-LSTM model with Bayesian optimization iteration number
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| 监测点 | 迭代次数 | 隐藏层节点 | 初始学习率 | 正则化参数L2 | RMSE/MPa | MAE/MPa |
|---|
| FBG01074 | 10 | 50 | 0.0897 | 6.0120×10−9 | 0.95416 | 0.77642 |
| 15 | 46 | 0.0421 | 2.2246×10−8 | 0.84217 | 0.62543 |
| 20 | 42 | 0.0322 | 1.0494×10−8 | 0.76578 | 0.55339 |
| 25 | 45 | 0.0343 | 1.3457×10−10 | 0.52074 | 0.43104 |
| 30 | 49 | 0.0359 | 6.9529×10−10 | 0.35586 | 0.35820 |
| 40 | 46 | 0.0361 | 5.5924×10−10 | 0.35578 | 0.34872 |
| FBG01081 | 10 | 37 | 0.0988 | 1.6448×10−10 | 0.86941 | 0.38627 |
| 15 | 43 | 0.0597 | 1.7559×10−10 | 0.74352 | 0.21359 |
| 20 | 40 | 0.0256 | 1.0732×10−8 | 0.30795 | 0.19957 |
| 25 | 44 | 0.0564 | 3.4598×10−9 | 0.42345 | 0.20354 |
| 30 | 35 | 0.0989 | 2.3356×10−10 | 0.29439 | 0.19847 |
| 40 | 32 | 0.1987 | 4.9260×10−10 | 0.28444 | 0.19662 |
| FBG01078 | 10 | 50 | 0.0019 | 1.1305×10−10 | 0.31595 | 0.20412 |
| 15 | 42 | 0.0134 | 1.1427×10−10 | 0.30646 | 0.20089 |
| 20 | 29 | 0.0291 | 1.1197×10−9 | 0.43457 | 0.33493 |
| 25 | 46 | 0.0159 | 8.4465×10−9 | 0.30024 | 0.19824 |
| 30 | 41 | 0.0234 | 1.1082×10−10 | 0.29804 | 0.18227 |
| 40 | 44 | 0.0111 | 1.0764×10−10 | 0.29672 | 0.17622 |
), ArticleFig(id=1227653081098290097, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=表4, caption=
BO-LSTM模型各优化参数随贝叶斯优化迭代次数的变化
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| 监测点 | 迭代次数 | 隐藏层节点 | 初始学习率 | 正则化参数L2 | RMSE/MPa | MAE/MPa |
|---|
| FBG01074 | 10 | 50 | 0.0897 | 6.0120×10−9 | 0.95416 | 0.77642 |
| 15 | 46 | 0.0421 | 2.2246×10−8 | 0.84217 | 0.62543 |
| 20 | 42 | 0.0322 | 1.0494×10−8 | 0.76578 | 0.55339 |
| 25 | 45 | 0.0343 | 1.3457×10−10 | 0.52074 | 0.43104 |
| 30 | 49 | 0.0359 | 6.9529×10−10 | 0.35586 | 0.35820 |
| 40 | 46 | 0.0361 | 5.5924×10−10 | 0.35578 | 0.34872 |
| FBG01081 | 10 | 37 | 0.0988 | 1.6448×10−10 | 0.86941 | 0.38627 |
| 15 | 43 | 0.0597 | 1.7559×10−10 | 0.74352 | 0.21359 |
| 20 | 40 | 0.0256 | 1.0732×10−8 | 0.30795 | 0.19957 |
| 25 | 44 | 0.0564 | 3.4598×10−9 | 0.42345 | 0.20354 |
| 30 | 35 | 0.0989 | 2.3356×10−10 | 0.29439 | 0.19847 |
| 40 | 32 | 0.1987 | 4.9260×10−10 | 0.28444 | 0.19662 |
| FBG01078 | 10 | 50 | 0.0019 | 1.1305×10−10 | 0.31595 | 0.20412 |
| 15 | 42 | 0.0134 | 1.1427×10−10 | 0.30646 | 0.20089 |
| 20 | 29 | 0.0291 | 1.1197×10−9 | 0.43457 | 0.33493 |
| 25 | 46 | 0.0159 | 8.4465×10−9 | 0.30024 | 0.19824 |
| 30 | 41 | 0.0234 | 1.1082×10−10 | 0.29804 | 0.18227 |
| 40 | 44 | 0.0111 | 1.0764×10−10 | 0.29672 | 0.17622 |
), ArticleFig(id=1227653081236702138, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Tab. 5, caption=
Hyperparameters of RNN model and LSTM model
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | RNN模型 | LSTM模型 |
|---|
| 隐藏层节点(NumOfUnits) | 40 | 40 |
| 优化算法 | adam | adam |
| 最大训练次数(MaxEpochs) | 800 | 800 |
| 梯度阈值(GradientThreshold) | 1 | 1 |
| 初始学习率(InitialLearnRate) | 0.198 | 0.198 |
| 学习率调整轮次(LearnRateDropPeriod) | 700 | 700 |
| 学习率调整因子(LearnRateDropFactor) | 0.2 | 0.2 |
| 正则化参数L2(L2Regularization) | 4.92×10−10 | 4.92×10−10 |
), ArticleFig(id=1227653081341559746, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=表5, caption=
RNN模型与LSTM模型的超参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | RNN模型 | LSTM模型 |
|---|
| 隐藏层节点(NumOfUnits) | 40 | 40 |
| 优化算法 | adam | adam |
| 最大训练次数(MaxEpochs) | 800 | 800 |
| 梯度阈值(GradientThreshold) | 1 | 1 |
| 初始学习率(InitialLearnRate) | 0.198 | 0.198 |
| 学习率调整轮次(LearnRateDropPeriod) | 700 | 700 |
| 学习率调整因子(LearnRateDropFactor) | 0.2 | 0.2 |
| 正则化参数L2(L2Regularization) | 4.92×10−10 | 4.92×10−10 |
), ArticleFig(id=1227653081442223048, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=EN, label=Tab. 6, caption=
Monitoring stress extremum of monitoring points
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时间/d | 应力极值/MPa |
|---|
| 监测点FBG01074 | 监测点FBG01081 | 监测点FBG01078 |
|---|
| 2 | 79.6933 | −13.5776 | −55.9488 |
| 3 | 88.469 | −13.2206 | −62.9587 |
| 4 | 88.9938 | −17.5406 | −63.7411 |
| 5 | 82.3743 | −14.0977 | −57.7986 |
| 6 | 82.8216 | −13.8898 | −58.0185 |
| 7 | 83.5275 | −12.0826 | −58.8782 |
| 8 | 85.7818 | −15.3158 | −60.8729 |
| 9 | 85.7943 | −18.9939 | −60.4010 |
), ArticleFig(id=1227653081517720526, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810156003816, language=CN, label=表6, caption=
监测点的监测应力极值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时间/d | 应力极值/MPa |
|---|
| 监测点FBG01074 | 监测点FBG01081 | 监测点FBG01078 |
|---|
| 2 | 79.6933 | −13.5776 | −55.9488 |
| 3 | 88.469 | −13.2206 | −62.9587 |
| 4 | 88.9938 | −17.5406 | −63.7411 |
| 5 | 82.3743 | −14.0977 | −57.7986 |
| 6 | 82.8216 | −13.8898 | −58.0185 |
| 7 | 83.5275 | −12.0826 | −58.8782 |
| 8 | 85.7818 | −15.3158 | −60.8729 |
| 9 | 85.7943 | −18.9939 | −60.4010 |
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