Article(id=1241791792853619706, tenantId=1146029695717560320, journalId=1241701559352995854, issueId=1241791788986471392, articleNumber=null, orderNo=null, doi=10.13197/j.eeed.2025.0305, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1706716800000, receivedDateStr=2024-02-01, revisedDate=1718640000000, revisedDateStr=2024-06-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1773995834792, onlineDateStr=2026-03-20, pubDate=1751212800000, pubDateStr=2025-06-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773995834792, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773995834792, creator=13701087609, updateTime=1773995834792, updator=13701087609, issue=Issue{id=1241791788986471392, tenantId=1146029695717560320, journalId=1241701559352995854, year='2025', volume='45', issue='3', pageStart='1', pageEnd='231', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773995833869, creator=13701087609, updateTime=1773996997624, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241796670220993006, tenantId=1146029695717560320, journalId=1241701559352995854, issueId=1241791788986471392, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241796670220993007, tenantId=1146029695717560320, journalId=1241701559352995854, issueId=1241791788986471392, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=57, endPage=73, ext={EN=ArticleExt(id=1241791793088499712, articleId=1241791792853619706, tenantId=1146029695717560320, journalId=1241701559352995854, language=EN, title=Subspace identification method of bridge frequencies based on the dimensionless vehicle response, columnId=null, journalTitle=Earthquake Engineering and Engineering Dynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The indirect identification of bridge frequencies through coupled vehicle-bridge dynamics is a critical area of research that underpins the health monitoring of bridges. Traditional methods in this domain, however, impose significant constraints on the parameters and operational velocities of the vehicles involved. These restrictions significantly hamper the real-world applicability of these indirect methods since they cannot be smoothly integrated into the analysis of standard vehicles in normal driving conditions. To bridge this gap in the literature and practice, the current study presents a pioneering approach that capitalizes on the dimensionless response of vehicles in transit to indirectly identify bridge frequencies. The research commences by formulating a set of dimensionless equations characterizing the motion of the vehicle-bridge system. From this theoretical groundwork, the study derives a system state equation and an output signal equation, both predicated upon an enhanced subspace identification technique. This study introduces an innovative equation that captures the dimensionless residual response signal from the dual axles of a single vehicle, incorporating temporal variances in the process. This methodological framework successfully negates the adverse impact of road surface irregularities, effectively sidestepping limitations linked to vehicle parameters within conventional subspace identification methods. The versatility of this approach allows for its application to any typical vehicle in motion across a bridge. Then, the study validates the practicality of the proposed indirect approach for the frequency identification of simply supported beam bridges using the dimensionless response of a dual-axle vehicle. Through rigorous numerical analyses, this study examines the influence of driving speeds, road surface conditions, and stochastic vehicle loads on the indirect identification of bridge frequencies. The results highlight the necessity of adequate load excitation to dependably identify bridge frequencies, especially for eliciting the higher-order modal vibrations of bridges, which are essential for accurately identifying modes at higher frequencies. Finally, empirical evidence is provided through field tests conducted on a high-pier simply supported beam bridge. By inputting the monitored dynamic contact force between the vehicle and bridge into the proposed enhanced subspace identification model, this study validates the feasibility and accuracy of this novel approach. The experimental results affirm that the short-time stochastic subspace identification(ST-SSI) technique effectively isolates the first two modal frequencies of the bridge, outperforming the multivariable output error state space(MOESP) method in identifying higher-frequency modes. This research substantially broadens the scope of bridge frequency identification to include standard vehicles within regular traffic flows, simultaneously improving the precision of frequency detection, especially for higher-order modes.
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当前基于车桥耦合系统的桥梁频率间接识别方法普遍对行驶车辆参数和速度有较大约束,难以应用于正常行驶的普通车辆。为了解决这一问题,该文提出了一种考虑车辆无量纲响应的桥梁频率间接识别方法。首先,以无量纲化的车-桥耦合运动学方程为基础,构建基于改进子空间识别法的系统状态方程与输出信号方程,建立了考虑时间差的车辆双轴无量纲响应差值信号方程,从理论上有效地消除了状态方程与输出信号中的路面平整度信息,突破了传统子空间识别法对车辆参数的限制,使该方法适用于任何普通车辆,同时验证了基于单次行驶双轴车辆响应的桥梁频率间接识别方法对简支梁桥频率识别的可行性。然后,通过数值计算探讨了车辆行驶速度、路面平整度等级和随机车辆荷载对桥梁频率间接识别的影响。计算结果表明,充分的荷载激励对桥梁频率的稳定识别非常重要,并且能够激发桥梁高阶模态的振动,更有利于桥梁高阶频率的识别。最后,针对一座实际服役的高墩简支梁桥开展现场行车试验,基于车桥动态接触力作为信号输入,验证子空间识别法获得桥梁频率的可行性和准确性。试验结果表明,短时随机子空间识别方法可以提取测试桥梁前2阶频率,在高阶频率的识别中有着更优于MOESP(multivariable output error state space,MOESP)子空间识别法的效果。
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, authorsList=金楠, 李嘉琪, 全一鑫, 施钟淇, 曾清)}, authors=[Author(id=1241802936708305099, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=jinnan@szsti.org, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241802936913826018, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802936708305099, language=EN, stringName=Nan JIN, firstName=Nan, middleName=null, lastName=JIN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.Shenzhen Technology Institute of Urban Public Safety, Shenzhen 518023, China
2.Shenzhen Key Laboratory of Urban Disasters Digital Twin, Shenzhen 518023, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241802937006100720, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802936708305099, language=CN, stringName=金楠, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.深圳市城市公共安全技术研究院有限公司,广东 深圳 518023
2.深圳市城市灾害数字孪生重点实验室,广东 深圳 518023, bio={"content":"
金楠(1990—),女,高级工程师,博士,主要从事智能监测研究。E-mail:jinnan@szsti.org
"}, bioImg=null, bioContent=
金楠(1990—),女,高级工程师,博士,主要从事智能监测研究。E-mail:jinnan@szsti.org
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1.深圳市城市公共安全技术研究院有限公司,广东 深圳 518023)]), AuthorCompany(id=1241802936284680343, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, xref=2., ext=[AuthorCompanyExt(id=1241802936288874648, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936284680343, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Shenzhen Key Laboratory of Urban Disasters Digital Twin, Shenzhen 518023, China), AuthorCompanyExt(id=1241802936297263257, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936284680343, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.深圳市城市灾害数字孪生重点实验室,广东 深圳 518023)])]), Author(id=1241802937098375423, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241802937224204559, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802937098375423, language=EN, stringName=Jiaqi LI, firstName=Jiaqi, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3.School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241802937341645090, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802937098375423, language=CN, stringName=李嘉琪, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3.哈尔滨工业大学(深圳)土木与环境工程学院,广东 深圳 518055, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241802936435675303, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, xref=3., ext=[AuthorCompanyExt(id=1241802936439869609, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936435675303, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China), AuthorCompanyExt(id=1241802936448258218, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936435675303, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.哈尔滨工业大学(深圳)土木与环境工程学院,广东 深圳 518055)])]), Author(id=1241802937433919792, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241802937538777400, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802937433919792, language=EN, stringName=Yixin QUAN, firstName=Yixin, middleName=null, lastName=QUAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, 4, address=
3.School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
4.Guangdong Provincial Key Laboratory of Intelligent and Resilient Structures for Civil Engineering, Shenzhen 518055, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241802937631052099, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802937433919792, language=CN, stringName=全一鑫, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, 4, address=
3.哈尔滨工业大学(深圳)土木与环境工程学院,广东 深圳 518055
4.广东省土木工程智能韧性结构重点实验室,广东 深圳 518055, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241802936435675303, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, xref=3., ext=[AuthorCompanyExt(id=1241802936439869609, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936435675303, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China), AuthorCompanyExt(id=1241802936448258218, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936435675303, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.哈尔滨工业大学(深圳)土木与环境工程学院,广东 深圳 518055)]), AuthorCompany(id=1241802936553115830, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, xref=4., ext=[AuthorCompanyExt(id=1241802936574087355, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936553115830, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.Guangdong Provincial Key Laboratory of Intelligent and Resilient Structures for Civil Engineering, Shenzhen 518055, China), AuthorCompanyExt(id=1241802936586670269, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936553115830, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.广东省土木工程智能韧性结构重点实验室,广东 深圳 518055)])]), Author(id=1241802937748492628, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241802937907876200, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802937748492628, language=EN, stringName=Zhongqi SHI, firstName=Zhongqi, middleName=null, lastName=SHI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.Shenzhen Technology Institute of Urban Public Safety, Shenzhen 518023, China
2.Shenzhen Key Laboratory of Urban Disasters Digital Twin, Shenzhen 518023, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241802938037899637, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802937748492628, language=CN, stringName=施钟淇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.深圳市城市公共安全技术研究院有限公司,广东 深圳 518023
2.深圳市城市灾害数字孪生重点实验室,广东 深圳 518023, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241802936146268290, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, xref=1., ext=[AuthorCompanyExt(id=1241802936154656899, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936146268290, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.Shenzhen Technology Institute of Urban Public Safety, Shenzhen 518023, China), AuthorCompanyExt(id=1241802936163045509, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936146268290, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.深圳市城市公共安全技术研究院有限公司,广东 深圳 518023)]), AuthorCompany(id=1241802936284680343, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, xref=2., ext=[AuthorCompanyExt(id=1241802936288874648, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936284680343, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Shenzhen Key Laboratory of Urban Disasters Digital Twin, Shenzhen 518023, China), AuthorCompanyExt(id=1241802936297263257, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936284680343, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.深圳市城市灾害数字孪生重点实验室,广东 深圳 518023)])]), Author(id=1241802939577209222, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, orderNo=4, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241802939740787092, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802939577209222, language=EN, stringName=Qing ZENG, firstName=Qing, middleName=null, lastName=ZENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, 4, address=
3.School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
4.Guangdong Provincial Key Laboratory of Intelligent and Resilient Structures for Civil Engineering, Shenzhen 518055, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241802939837256092, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, authorId=1241802939577209222, language=CN, stringName=曾清, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, 4, address=
3.哈尔滨工业大学(深圳)土木与环境工程学院,广东 深圳 518055
4.广东省土木工程智能韧性结构重点实验室,广东 深圳 518055, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241802936435675303, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, xref=3., ext=[AuthorCompanyExt(id=1241802936439869609, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, companyId=1241802936435675303, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Dual-axle multi-degree-of-freedom vehicle model, figureFileSmall=WmhXNqZ2tpFBvF/8nuZV0Q==, figureFileBig=PKcjj7bhKvxjF+Q3KjVcbg==, tableContent=null), ArticleFig(id=1241802941812773507, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图1, caption=
双轴多自由度车辆模型, figureFileSmall=WmhXNqZ2tpFBvF/8nuZV0Q==, figureFileBig=PKcjj7bhKvxjF+Q3KjVcbg==, tableContent=null), ArticleFig(id=1241802942009905806, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 2, caption=
Stabilization diagrams for ST-SSI to identify bridge frequencies indirectly using the dual-axle vehicle response, figureFileSmall=XJdfH8pdUeGEr31RHdA4mA==, figureFileBig=3axOJCLjDD5+36HsroM5lg==, tableContent=null), ArticleFig(id=1241802942127346327, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图2, caption=
基于双轴车辆无量纲响应的简支桥频率ST-SSI间接识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
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, figureFileSmall=XJdfH8pdUeGEr31RHdA4mA==, figureFileBig=3axOJCLjDD5+36HsroM5lg==, tableContent=null), ArticleFig(id=1241802942244786853, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 3, caption=
Stabilization diagrams for MOESP to identify bridge frequencies indirectly using the dual-axle vehicle response, figureFileSmall=ihX2ozj7KwTloNCDBDJiew==, figureFileBig=aS14WX78xTzr4GsRxJJVag==, tableContent=null), ArticleFig(id=1241802942374810292, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图3, caption=
基于双轴车辆无量纲响应的简支桥频率MOESP间接识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
。
, figureFileSmall=ihX2ozj7KwTloNCDBDJiew==, figureFileBig=aS14WX78xTzr4GsRxJJVag==, tableContent=null), ArticleFig(id=1241802942509028034, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 4, caption=
Stabilization diagrams for ST-SSI considering regular on-going vehicles, figureFileSmall=uo6rdEqTnSggZa4Fs3Xlzg==, figureFileBig=KBw7hAzF9uJqJVTZwaZoVQ==, tableContent=null), ArticleFig(id=1241802944048337618, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图4, caption=
考虑连续行驶车辆情况下应用ST-SSI的识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
。
, figureFileSmall=uo6rdEqTnSggZa4Fs3Xlzg==, figureFileBig=KBw7hAzF9uJqJVTZwaZoVQ==, tableContent=null), ArticleFig(id=1241802944207721185, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 5, caption=
Stabilization diagrams for MOESP considering regular on-going vehicles, figureFileSmall=2aEgR191+wus4fH4NC0dXQ==, figureFileBig=8EodRjNZpT9+wAqsZjHkJw==, tableContent=null), ArticleFig(id=1241802944375493366, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图5, caption=
考虑连续行驶车辆情况下应用MOESP的识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
。
, figureFileSmall=2aEgR191+wus4fH4NC0dXQ==, figureFileBig=8EodRjNZpT9+wAqsZjHkJw==, tableContent=null), ArticleFig(id=1241802944526488323, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 6, caption=
Paths of random vehicles for the simply supported bridge (LB = 30 m), figureFileSmall=VltlWEPMNhEbSfyBLBuwFw==, figureFileBig=IIznorVyrdG9/zMzr49z3g==, tableContent=null), ArticleFig(id=1241802944660706059, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图6, caption=
简支梁桥(LB = 30 m)随机车辆行驶路径, figureFileSmall=VltlWEPMNhEbSfyBLBuwFw==, figureFileBig=IIznorVyrdG9/zMzr49z3g==, tableContent=null), ArticleFig(id=1241802944786535189, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 7, caption=
Stabilization diagrams of ST-SSI identification considering random vehicles, figureFileSmall=xkGAoJiriHgx4riJ46uvUA==, figureFileBig=l4xuqTzXmMkigyIBoOyHoA==, tableContent=null), ArticleFig(id=1241802944903975716, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图7, caption=
考虑随机行驶车辆情况下应用ST-SSI的识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
。
, figureFileSmall=xkGAoJiriHgx4riJ46uvUA==, figureFileBig=l4xuqTzXmMkigyIBoOyHoA==, tableContent=null), ArticleFig(id=1241802945017221937, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 8, caption=
Stabilization diagrams of MOESP identification considering random vehicles, figureFileSmall=4Sh7X+aMU9ER9Fyz0adLVg==, figureFileBig=RUwnNxvBzbhtX4uwTJh1Vg==, tableContent=null), ArticleFig(id=1241802945155633983, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图8, caption=
考虑随机行驶车辆情况下应用MOESP的识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
。
, figureFileSmall=4Sh7X+aMU9ER9Fyz0adLVg==, figureFileBig=RUwnNxvBzbhtX4uwTJh1Vg==, tableContent=null), ArticleFig(id=1241802945310823246, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 9, caption=
Paths of random vehicles for the 3-span bridge (LB = 80 m), figureFileSmall=dRluOP6fkyiWtk4Nqc2NoA==, figureFileBig=yH7EMfn7YsUKrOTYoqk04w==, tableContent=null), ArticleFig(id=1241802945436652383, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图9, caption=
三跨连续梁桥(LB = 80 m)随机车辆行驶路径, figureFileSmall=dRluOP6fkyiWtk4Nqc2NoA==, figureFileBig=yH7EMfn7YsUKrOTYoqk04w==, tableContent=null), ArticleFig(id=1241802945558287214, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 10, caption=
Stabilization diagrams of ST-SSI identification for the 3-span bridge considering random vehicles, figureFileSmall=PQHq/7lyBPJAaOS/Z9XwyA==, figureFileBig=cX3y1s8s3mE0dxrxXkqX0g==, tableContent=null), ArticleFig(id=1241802945679922043, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图10, caption=
考虑随机行驶车辆情况下三跨连续梁桥ST-SSI识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
。
, figureFileSmall=PQHq/7lyBPJAaOS/Z9XwyA==, figureFileBig=cX3y1s8s3mE0dxrxXkqX0g==, tableContent=null), ArticleFig(id=1241802945818334087, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 11, caption=
Stabilization diagrams of MOESP identification for the 3-span bridge considering random vehicles, figureFileSmall=wCcbdnvCthDZRUgnifMicw==, figureFileBig=RqgawGHnjiXWuKrKsh1d+Q==, tableContent=null), ArticleFig(id=1241802946279707564, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图11, caption=
考虑随机行驶车辆情况下三跨连续梁桥MOESP识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
。
, figureFileSmall=wCcbdnvCthDZRUgnifMicw==, figureFileBig=RqgawGHnjiXWuKrKsh1d+Q==, tableContent=null), ArticleFig(id=1241802946418119612, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 12, caption=
Experimental bridges and vehicles, figureFileSmall=+UD3OAwvuBScJvIpy9al7A==, figureFileBig=nWqldLLSOXze1ZRU7F0MLQ==, tableContent=null), ArticleFig(id=1241802946527171528, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图12, caption=
试验车桥, figureFileSmall=+UD3OAwvuBScJvIpy9al7A==, figureFileBig=nWqldLLSOXze1ZRU7F0MLQ==, tableContent=null), ArticleFig(id=1241802946644612052, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 13, caption=
Stabilization diagrams of ST-SSI identification for the test bridge, figureFileSmall=K43zj72ZptupnyFFOZPR5A==, figureFileBig=Vl6+/2MYIEH0kQxlZZSF4w==, tableContent=null), ArticleFig(id=1241802946803995622, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图13, caption=
测试桥ST-SSI识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
。
, figureFileSmall=K43zj72ZptupnyFFOZPR5A==, figureFileBig=Vl6+/2MYIEH0kQxlZZSF4w==, tableContent=null), ArticleFig(id=1241802946934019063, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Fig. 14, caption=
Stabilization diagrams of MOESP identification for the test bridge, figureFileSmall=b7S0KugBqRhEg6gBh2lDxA==, figureFileBig=PKYzyc6+coy6Z/Tx6WeU+g==, tableContent=null), ArticleFig(id=1241802947043069957, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=图14, caption=
测试桥MOESP识别稳定图注:虚线为桥梁频率的理论值;空心圆为改进的子空间法得到的全部频率识别结果;实心圆为其中满足稳定性条件的频率点
。
, figureFileSmall=b7S0KugBqRhEg6gBh2lDxA==, figureFileBig=PKYzyc6+coy6Z/Tx6WeU+g==, tableContent=null), ArticleFig(id=1241802948553019406, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Table 1, caption=
Parameters of a dual-axle vehicle
, figureFileSmall=null, figureFileBig=null, tableContent=
车辆质量 | 接触刚度kc1 =kc2/(×105 N/m) | 接触阻尼cc1 =cc2/(N•s/m) | 车辆1阶频率 |
|---|
| 4990 | 7.02 | 1600 | 1.95 |
), ArticleFig(id=1241802948691431452, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=表1, caption=
双轴车辆参数
, figureFileSmall=null, figureFileBig=null, tableContent=
车辆质量 | 接触刚度kc1 =kc2/(×105 N/m) | 接触阻尼cc1 =cc2/(N•s/m) | 车辆1阶频率 |
|---|
| 4990 | 7.02 | 1600 | 1.95 |
), ArticleFig(id=1241802948829843499, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Table 2, caption=
Parameters of target bridges
, figureFileSmall=null, figureFileBig=null, tableContent=
| 桥长LB/m | 抗弯刚度EI/(×108 kN•m2) | 单位质量μ/(×104 kg/m) | 1阶频率 | 2阶频率 |
|---|
| 30 | 2.05 | 3.60 | 4.15 | 16.19 |
| 20+40+20 | 3.64 | 9.25 |
), ArticleFig(id=1241802948947284019, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=表2, caption=
待测桥梁参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 桥长LB/m | 抗弯刚度EI/(×108 kN•m2) | 单位质量μ/(×104 kg/m) | 1阶频率 | 2阶频率 |
|---|
| 30 | 2.05 | 3.60 | 4.15 | 16.19 |
| 20+40+20 | 3.64 | 9.25 |
), ArticleFig(id=1241802949110861889, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=EN, label=Table 3, caption=
Parameters of the measured vehicles[42]
, figureFileSmall=null, figureFileBig=null, tableContent=
| 车辆参数 | 符号 | 值 | 单位 | 车辆参数 | 符号 | 值 | 单位 |
|---|
| 车身质量 | mc | 1400 | kg | 前轮刚度 | Kr1 | 92727 | N/m |
| 车身转动惯量 | Ic | 3526 | kg•m2 | 后轮刚度 | Kr2 | 107592 | N/m |
| 前悬架簧下质量 | mw1 | 35 | kg | 前轴距 | L1 | 1.65 | m |
| 后悬架簧下质量 | mw2 | 65 | kg | 后轴距 | L2 | 1.75 | m |
| 前悬架刚度 | Kv1 | 21284 | N/m | 第1阶模态(车身竖向运动) | | 0.8002 | Hz |
| 后悬架刚度 | Kv2 | 28835 | N/m | 第2阶模态(车身俯仰运动) | | 0.9579 | Hz |
| 前悬架阻尼 | Cv1 | 2342 | N•s/m | 第3阶模态(前轮竖向运动) | | 7.2879 | Hz |
| 后悬架阻尼 | Cv2 | 3795 | N•s/m | 第4阶模态(后轮竖向运动) | | 9.1403 | Hz |
), ArticleFig(id=1241802949211525191, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1241791792853619706, language=CN, label=表3, caption=
测试车辆参数[42]
, figureFileSmall=null, figureFileBig=null, tableContent=
| 车辆参数 | 符号 | 值 | 单位 | 车辆参数 | 符号 | 值 | 单位 |
|---|
| 车身质量 | mc | 1400 | kg | 前轮刚度 | Kr1 | 92727 | N/m |
| 车身转动惯量 | Ic | 3526 | kg•m2 | 后轮刚度 | Kr2 | 107592 | N/m |
| 前悬架簧下质量 | mw1 | 35 | kg | 前轴距 | L1 | 1.65 | m |
| 后悬架簧下质量 | mw2 | 65 | kg | 后轴距 | L2 | 1.75 | m |
| 前悬架刚度 | Kv1 | 21284 | N/m | 第1阶模态(车身竖向运动) | | 0.8002 | Hz |
| 后悬架刚度 | Kv2 | 28835 | N/m | 第2阶模态(车身俯仰运动) | | 0.9579 | Hz |
| 前悬架阻尼 | Cv1 | 2342 | N•s/m | 第3阶模态(前轮竖向运动) | | 7.2879 | Hz |
| 后悬架阻尼 | Cv2 | 3795 | N•s/m | 第4阶模态(后轮竖向运动) | | 9.1403 | Hz |
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