Article(id=1228634263294243389, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228634261138374834, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2024.07.001, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1681056000000, receivedDateStr=2023-04-10, revisedDate=1693152000000, revisedDateStr=2023-08-28, acceptedDate=null, acceptedDateStr=null, onlineDate=1770858835290, onlineDateStr=2026-02-12, pubDate=1722096000000, pubDateStr=2024-07-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770858835290, onlineIssueDateStr=2026-02-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770858835290, creator=13701087609, updateTime=1770858835290, updator=13701087609, issue=Issue{id=1228634261138374834, tenantId=1146029695717560320, journalId=1225147924628267009, year='2024', volume='37', issue='7', pageStart='1089', pageEnd='1268', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770858834775, creator=13701087609, updateTime=1770859016311, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228635022622654927, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228634261138374834, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228635022622654928, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228634261138374834, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1089, endPage=1097, ext={EN=ArticleExt(id=1228634263571067455, articleId=1228634263294243389, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Vehicle-assisted bridge damage assessment by combining attention mechanism and Bi-LSTM network, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Vehicle-assisted bridge damage identification has great application potential,but it is still difficult to extract damage-sensitive features from multi-source monitoring data and accurately evaluate the bridge damage status. To solve this problem,an Attention-LSTM-based Feature Fusion Model (ALFF-Net) is proposed. The model improves the perception ability of Bi-LSTM cells for multi-scale feature information in time series data through a preset data reconstruction layer. Furthermore,by employing attention mechanism and feature fusion strategy,the model reduces the prediction difficulty of downstream branches of deep neural networks and further improves the modeling ability for the important dependency relationships in the sequence data. A monitoring dataset under different road roughness and vehicle speeds is generated through a vehicle-bridge interaction system simulation,and the bridge damage identification performance of the ALFF-Net model is comprehensively tested. The results show that the ALFF-Net model improves the damage identification accuracy by up to 19.30% compared to the classical LSTM network while significantly reducing computational costs,and the identification errors under different road roughness levels are less than 3%. Moreover,by comparing the identification accuracy of the ALFF-Net model under different data-driven schemes,the robustness of the bridge damage detection results with synergistic multi-source monitoring data is verified.
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基于车辆辅助的桥梁损伤识别具有巨大应用潜力,但仍难以从多源监测数据中提取损伤敏感特征,进而准确评估桥梁损伤状态。为此,提出了基于长短时记忆网络的注意力加权特征融合模型(ALFF-Net)。该模型通过预置数据重构层,提高了Bi-LSTM单元对时间序列多尺度特征信息的感知能力。同时结合注意力机制和特征融合策略,降低了深度神经网络下游分支的预测难度,进一步提升了模型对序列数据重要依赖关系的建模能力。通过车-桥耦合仿真生成了不同路面不平整度和车速下的监测数据集,对ALFF-Net模型的桥梁损伤识别性能进行综合测试。结果表明:ALFF-Net模型较经典LSTM网络在显著降低计算成本的同时,损伤识别准确率最高可提升19.30%,且各级路面不平整度下的识别误差均小于3%。进一步地,通过对比ALFF-Net模型在不同监测数据驱动方案下的识别精度,验证了协同多源监测数据的桥梁结构损伤检测结果更为鲁棒。
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曾 琰(1998—),男,硕士研究生。E-mail: zengyan@seu.edu.cn。
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1东南大学混凝土与预应力混凝土结构教育部重点实验室,江苏 南京 210096
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Vehicle-bridge coupling vibration system, figureFileSmall=bt3tXhDI3R/GUddzc6Hkpw==, figureFileBig=Ue1A1X7XYuSpmqSe2FytAQ==, tableContent=null), ArticleFig(id=1228634291010204346, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图1, caption=
车-桥耦合振动系统, figureFileSmall=bt3tXhDI3R/GUddzc6Hkpw==, figureFileBig=Ue1A1X7XYuSpmqSe2FytAQ==, tableContent=null), ArticleFig(id=1228634291312194243, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.2, caption=
The basic structure of ALFF-Net model, figureFileSmall=qrLlw1YAjfoDEwc1lE2lqQ==, figureFileBig=1EUogScrRNt67bQVr0QM9w==, tableContent=null), ArticleFig(id=1228634291375108807, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图2, caption=
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The basic structure of Bi-LSTM network, figureFileSmall=f1Kzz9ci8nDjrr55zQ/WJQ==, figureFileBig=WuQtg+83JhO6gPeEBQalrQ==, tableContent=null), ArticleFig(id=1228634291723236048, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图4, caption=
Bi-LSTM网络基本结构, figureFileSmall=f1Kzz9ci8nDjrr55zQ/WJQ==, figureFileBig=WuQtg+83JhO6gPeEBQalrQ==, tableContent=null), ArticleFig(id=1228634291811316433, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.5, caption=
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The numerical verification process, figureFileSmall=armV/3v9Z2R1yaMppylr0w==, figureFileBig=ql3H/x1olP1LeASsA7Xipg==, tableContent=null), ArticleFig(id=1228634292104917721, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图6, caption=
数值验证流程, figureFileSmall=armV/3v9Z2R1yaMppylr0w==, figureFileBig=ql3H/x1olP1LeASsA7Xipg==, tableContent=null), ArticleFig(id=1228634292251718362, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.7, caption=
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车辆和桥梁的传感器布置, figureFileSmall=Teb28nJI8tl0epdfxV/B3A==, figureFileBig=JnHMA6Ajfe3ah1F2rmr7Rw==, tableContent=null), ArticleFig(id=1228634292415296226, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.8, caption=
The distribution of vehicle speed and bridge flexural stiffness in damage sample set, figureFileSmall=pEn6cxPjjYIsg22ZkWIjSw==, figureFileBig=/fyITFFLCwyhdL7gkL6jeA==, tableContent=null), ArticleFig(id=1228634292494988003, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图8, caption=
损伤样本的车速和桥梁抗弯刚度分布, figureFileSmall=pEn6cxPjjYIsg22ZkWIjSw==, figureFileBig=/fyITFFLCwyhdL7gkL6jeA==, tableContent=null), ArticleFig(id=1228634292574679781, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.9, caption=
The displacement response signal of the bridge, figureFileSmall=rf4MxEjKKrN8d9Ot6b+2oQ==, figureFileBig=IKOBvdasa5grKwe/BhakYA==, tableContent=null), ArticleFig(id=1228634292666954471, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图9, caption=
桥梁位移响应信号, figureFileSmall=rf4MxEjKKrN8d9Ot6b+2oQ==, figureFileBig=IKOBvdasa5grKwe/BhakYA==, tableContent=null), ArticleFig(id=1228634292763423463, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.10, caption=
The time-history of vehicle dynamic action, figureFileSmall=SmZsl7OyjTaip0qKDzeYzw==, figureFileBig=8QxBaev82OQLmTZgWttETQ==, tableContent=null), ArticleFig(id=1228634292847309545, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图10, caption=
车辆动态作用时程, figureFileSmall=SmZsl7OyjTaip0qKDzeYzw==, figureFileBig=8QxBaev82OQLmTZgWttETQ==, tableContent=null), ArticleFig(id=1228634292943778539, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.11, caption=
The curve of learning rate with a piecewise constant decay strategy, figureFileSmall=oPubZ92IHky843rmfIKVDA==, figureFileBig=uVNUpL2DKKOZxxnel2oIHA==, tableContent=null), ArticleFig(id=1228634293027664620, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图11, caption=
学习率分段常数衰减曲线, figureFileSmall=oPubZ92IHky843rmfIKVDA==, figureFileBig=uVNUpL2DKKOZxxnel2oIHA==, tableContent=null), ArticleFig(id=1228634293119939311, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.12, caption=
The descent curve of the loss function, figureFileSmall=bD/ISEQh3TQX6/pqoSVQgA==, figureFileBig=a+PpwhfWc+PDAsNE2x3K3A==, tableContent=null), ArticleFig(id=1228634293191242481, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图12, caption=
损失函数下降曲线, figureFileSmall=bD/ISEQh3TQX6/pqoSVQgA==, figureFileBig=a+PpwhfWc+PDAsNE2x3K3A==, tableContent=null), ArticleFig(id=1228634293262545651, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.13, caption=
The accuracy of the validation set of the models, figureFileSmall=TaIiI6LhnYUpHMWpqtn0HQ==, figureFileBig=lAJrRz2QVXDrcqefFz06qA==, tableContent=null), ArticleFig(id=1228634293342237428, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图13, caption=
模型的验证集准确率, figureFileSmall=TaIiI6LhnYUpHMWpqtn0HQ==, figureFileBig=lAJrRz2QVXDrcqefFz06qA==, tableContent=null), ArticleFig(id=1228634293421929207, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.14, caption=
The optimum number of parameters of the models, figureFileSmall=r2PrQS1gri5zdVVrsv9NYw==, figureFileBig=HdbRteaTqYQdIpfm9yuYUQ==, tableContent=null), ArticleFig(id=1228634293484843770, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图14, caption=
模型最佳参数量, figureFileSmall=r2PrQS1gri5zdVVrsv9NYw==, figureFileBig=HdbRteaTqYQdIpfm9yuYUQ==, tableContent=null), ArticleFig(id=1228634293556146939, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.15, caption=
Training time of the models, figureFileSmall=ll7Oxkp2L+W2ybRirqKpHQ==, figureFileBig=bqFZotDpLz/izEptS8UIaQ==, tableContent=null), ArticleFig(id=1228634293631644412, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图15, caption=
模型训练时长, figureFileSmall=ll7Oxkp2L+W2ybRirqKpHQ==, figureFileBig=bqFZotDpLz/izEptS8UIaQ==, tableContent=null), ArticleFig(id=1228634293711336189, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.16, caption=
Damage identification results of ALFF-Net model, figureFileSmall=5dw3beBPVy1Kb+VbTwnMgA==, figureFileBig=AeiIcAgqyXoT9vceScYLDg==, tableContent=null), ArticleFig(id=1228634293803610878, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图16, caption=
ALFF-Net模型损伤识别结果, figureFileSmall=5dw3beBPVy1Kb+VbTwnMgA==, figureFileBig=AeiIcAgqyXoT9vceScYLDg==, tableContent=null), ArticleFig(id=1228634293908468480, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.17, caption=
Damage identification results of LSTM network, figureFileSmall=XUNjq1O4ONjYG7WU4aOlLw==, figureFileBig=E7qgHozkjSSG2XsCH+gEPA==, tableContent=null), ArticleFig(id=1228634294025908994, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图17, caption=
LSTM网络损伤识别结果, figureFileSmall=XUNjq1O4ONjYG7WU4aOlLw==, figureFileBig=E7qgHozkjSSG2XsCH+gEPA==, tableContent=null), ArticleFig(id=1228634294113989380, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Fig.18, caption=
Comparison of damage identification accuracy of different monitoring data-driven schemes, figureFileSmall=1LFmd1leG8+JwLISXRaZ2g==, figureFileBig=9pGAlU0DvsH5QecN60f0KQ==, tableContent=null), ArticleFig(id=1228634294181098246, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=图18, caption=
不同监测数据驱动方案下的损伤识别准确率对比, figureFileSmall=1LFmd1leG8+JwLISXRaZ2g==, figureFileBig=9pGAlU0DvsH5QecN60f0KQ==, tableContent=null), ArticleFig(id=1228634294244012808, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Tab.1, caption=
Different sensor combinations schemes
, figureFileSmall=null, figureFileBig=null, tableContent=
| 传感器组合方案 | 信号数量 | 传感器类型和位置 |
|---|
| 协同驱动方案 | 3 | DS-1/DS-2/(AS-1, AS-2)* |
| 非协同驱动方案 | 3 | DS-1/DS-2/DS-3 |
), ArticleFig(id=1228634294336287498, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=表1, caption=
不同传感器组合方案
, figureFileSmall=null, figureFileBig=null, tableContent=
| 传感器组合方案 | 信号数量 | 传感器类型和位置 |
|---|
| 协同驱动方案 | 3 | DS-1/DS-2/(AS-1, AS-2)* |
| 非协同驱动方案 | 3 | DS-1/DS-2/DS-3 |
), ArticleFig(id=1228634294399202060, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Tab. 2, caption=
Classification of bridge damage state
, figureFileSmall=null, figureFileBig=null, tableContent=
| 评估分类标签 | 桥梁抗弯刚度 |
|---|
| State Ⅰ | 整体刚度折减小于5% |
| State Ⅱ | 整体刚度折减5%~10% |
| State Ⅲ | 整体刚度折减10%~15% |
| State Ⅳ | 整体刚度折减大于15% |
), ArticleFig(id=1228634294470505230, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=表2, caption=
桥梁损伤状态分类
, figureFileSmall=null, figureFileBig=null, tableContent=
| 评估分类标签 | 桥梁抗弯刚度 |
|---|
| State Ⅰ | 整体刚度折减小于5% |
| State Ⅱ | 整体刚度折减5%~10% |
| State Ⅲ | 整体刚度折减10%~15% |
| State Ⅳ | 整体刚度折减大于15% |
), ArticleFig(id=1228634294546002704, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Tab.3, caption=
Relevant parameters of vehicle-bridge coupling vibration system
, figureFileSmall=null, figureFileBig=null, tableContent=
| 车辆参数 | 取值 | 桥梁参数 | 取值 |
|---|
| m1/kg | 1425 | L/m | 40 |
| m2/kg | 32025 | EI/(N⋅m-2) | 1.275×1011 |
| k1/(N⋅m-1) | 2.85×105 | ρ/(kg⋅m-1) | 1.2×104 |
| k2/(N⋅m-1) | 6.5×105 | ξ | 0 |
| c1/(N⋅s⋅m-1) | 0 | | |
| c2/(N⋅s⋅m-1) | 2.1×104 | | |
), ArticleFig(id=1228634294621500178, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=表3, caption=
车-桥耦合振动系统相关参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 车辆参数 | 取值 | 桥梁参数 | 取值 |
|---|
| m1/kg | 1425 | L/m | 40 |
| m2/kg | 32025 | EI/(N⋅m-2) | 1.275×1011 |
| k1/(N⋅m-1) | 2.85×105 | ρ/(kg⋅m-1) | 1.2×104 |
| k2/(N⋅m-1) | 6.5×105 | ξ | 0 |
| c1/(N⋅s⋅m-1) | 0 | | |
| c2/(N⋅s⋅m-1) | 2.1×104 | | |
), ArticleFig(id=1228634294717969172, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=EN, label=Tab.4, caption=
The calculation results of the classification index of the models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 路面不平整度等级 | Accuracy/% | Pmacro/% | Rmacro/% | Fmacro/% |
|---|
| ALFF-Net | Class A | 97.60 | 97.54 | 97.56 | 97.55 |
| Class B | 97.70 | 97.71 | 97.64 | 97.67 |
| Class C | 97.10 | 97.13 | 97.14 | 97.14 |
| Class D | 97.00 | 97.01 | 97.10 | 97.05 |
| LSTM | Class A | 93.40 | 93.41 | 93.42 | 93.42 |
| Class B | 90.40 | 90.52 | 90.22 | 90.37 |
| Class C | 87.90 | 87.99 | 87.77 | 87.88 |
| Class D | 77.70 | 78.15 | 77.88 | 78.01 |
), ArticleFig(id=1228634294806049558, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228634263294243389, language=CN, label=表4, caption=
模型分类指标计算结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 路面不平整度等级 | Accuracy/% | Pmacro/% | Rmacro/% | Fmacro/% |
|---|
| ALFF-Net | Class A | 97.60 | 97.54 | 97.56 | 97.55 |
| Class B | 97.70 | 97.71 | 97.64 | 97.67 |
| Class C | 97.10 | 97.13 | 97.14 | 97.14 |
| Class D | 97.00 | 97.01 | 97.10 | 97.05 |
| LSTM | Class A | 93.40 | 93.41 | 93.42 | 93.42 |
| Class B | 90.40 | 90.52 | 90.22 | 90.37 |
| Class C | 87.90 | 87.99 | 87.77 | 87.88 |
| Class D | 77.70 | 78.15 | 77.88 | 78.01 |
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