Article(id=1228011506890113962, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228011505698931621, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2024.01.006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1647964800000, receivedDateStr=2022-03-23, revisedDate=1655654400000, revisedDateStr=2022-06-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1770710358592, onlineDateStr=2026-02-10, pubDate=1706371200000, pubDateStr=2024-01-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770710358592, onlineIssueDateStr=2026-02-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770710358592, creator=13701087609, updateTime=1770710358592, updator=13701087609, issue=Issue{id=1228011505698931621, tenantId=1146029695717560320, journalId=1225147924628267009, year='2024', volume='37', issue='1', pageStart='1', pageEnd='190', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770710358308, creator=13701087609, updateTime=1770795378159, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228368104862974870, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228011505698931621, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228368104862974871, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228011505698931621, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=52, endPage=59, ext={EN=ArticleExt(id=1228011507104023469, articleId=1228011506890113962, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Long-term tracking and variability analysis of modal parameters of a long-span cable-stayed bridge, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To enrich the measured database of the modal parameters of the long-span cable-stayed bridge,based on the data collected by the structural health monitoring system of the Sutong Bridge,the modal parameters of the bridge during 2010 are obtained using the established automated modal identification and tracking method. On that basis,the variability of the modal parameters of the bridge with the changing temperature and wind speed is analyzed. Results show that the frequency of the bridge is controlled by both temperature and wind speed. The frequency decreases with the increased temperature and increases with the increased wind speed. The variability of the damping ratio of the main girder of the bridge is significantly greater than that of the frequency. The damping ratio of the first-order lateral bending modes of the main girder fluctuates between 0.5% and 15% at low wind speed interval. It gradually decreases and stabilizes at about 2% when the wind speed is greater than 9 m/s. The damping ratio of the first four vertical bending modes of the bridge is mainly affected by the aerodynamic damping. It increases slightly with the increase of wind speed at the low wind speed intervals. The obtained results can provide a reference for assessing the in-service performance and issuing operational management of the bridge.
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为了丰富大跨度斜拉桥模态参数的实测数据库,依托苏通大桥结构健康监测系统采集的数据,采用所建立的模态自动识别和追踪方法,获取了2010年期间该桥的模态参数值,并据此分析了在温度和风速作用下桥梁模态参数的变异性。研究结果表明,大桥主梁模态频率的变化受温度和风速共同影响,随着温度的升高而降低,随着风速的升高而增加。大桥主梁模态阻尼比的变异性显著大于模态频率,低风速下主梁一阶侧弯阻尼比在0.5%~15%之间波动,风速大于9 m/s时逐渐降低并稳定在2%左右。大桥主梁前四阶竖弯阻尼比受气动阻尼的影响较大,在风速较小时随着风速的增加略有增加。研究结果可为大桥的服役性能评估与运营管理提供参考。
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茅建校(1990—),男,博士,副研究员,硕士生导师。E-mail:jianxiao@seu.edu.cn。
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42(4):100-106., articleTitle=Identification of modal parameters of bridges considering temperature and wind effects, refAbstract=null)], funds=[Fund(id=1228042462107725848, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, awardId=52108274, language=CN, fundingSource=国家自然科学基金资助项目(52108274), fundOrder=null, country=null), Fund(id=1228042462200000543, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, awardId=51978155, language=CN, fundingSource=国家自然科学基金资助项目(51978155), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1228042453928833820, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, xref=null, ext=[AuthorCompanyExt(id=1228042453941416733, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, companyId=1228042453928833820, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Key Laboratory of Concrete and Pre-stressed Concrete Structures of Ministry of Education, Southeast University,Nanjing 211189,China), AuthorCompanyExt(id=1228042455283594017, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, companyId=1228042453928833820, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏 南京 211189)])], figs=[ArticleFig(id=1228042458274132911, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Fig.1, caption=
Layout of the accelerometers and anemometers of Sutong Bridge, figureFileSmall=j+HhDbSV/51OMgW+Wz4Yow==, figureFileBig=4ajcXi+btlphFYEg0NYotA==, tableContent=null), ArticleFig(id=1228042458408350647, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=图1, caption=
苏通大桥加速度计和风速仪布置图, figureFileSmall=j+HhDbSV/51OMgW+Wz4Yow==, figureFileBig=4ajcXi+btlphFYEg0NYotA==, tableContent=null), ArticleFig(id=1228042459977020348, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Fig.2, caption=
Layout of the sensors of the mid-span section of the grider of Sutong Bridge (Unit: m), figureFileSmall=riGWwaOntBq/Le+ggZ12Rw==, figureFileBig=Dsf9CFp1U41c4ftbr1L8VA==, tableContent=null), ArticleFig(id=1228042460098655170, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=图2, caption=
苏通大桥主梁跨中传感器布置图(单位:m), figureFileSmall=riGWwaOntBq/Le+ggZ12Rw==, figureFileBig=Dsf9CFp1U41c4ftbr1L8VA==, tableContent=null), ArticleFig(id=1228042460253844426, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Fig.3, caption=
The monitored temperature and wind speed of the mid-span section of the girder of Sutong Bridge, figureFileSmall=O//AYPWUhKikfqdDU9bkhQ==, figureFileBig=cV0jJ7YB8yJovpiNZ2qGPQ==, tableContent=null), ArticleFig(id=1228042460337730513, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=图3, caption=
苏通大桥主梁跨中实测温度和风速, figureFileSmall=O//AYPWUhKikfqdDU9bkhQ==, figureFileBig=cV0jJ7YB8yJovpiNZ2qGPQ==, tableContent=null), ArticleFig(id=1228042460430005207, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Fig.4, caption=
Relationship between acceleration RMS of girder and environmental factors, figureFileSmall=+6lFd69cgCq4vSvvE4V5Lw==, figureFileBig=Eg9GtaMfu0X0vLmGkeSSdA==, tableContent=null), ArticleFig(id=1228042460564222938, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=图4, caption=
主梁加速度RMS与环境因素的关系, figureFileSmall=+6lFd69cgCq4vSvvE4V5Lw==, figureFileBig=Eg9GtaMfu0X0vLmGkeSSdA==, tableContent=null), ArticleFig(id=1228042460740383710, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Fig.5, caption=
The modal frequencies tracking results of the girder of Sutong Bridge, figureFileSmall=XXvnZ2m9yI+rE4u12vNgBw==, figureFileBig=CcF0hLoqzam2zv6p2gAE9g==, tableContent=null), ArticleFig(id=1228042460841047012, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=图5, caption=
苏通大桥主梁模态频率追踪结果, figureFileSmall=XXvnZ2m9yI+rE4u12vNgBw==, figureFileBig=CcF0hLoqzam2zv6p2gAE9g==, tableContent=null), ArticleFig(id=1228042460975264745, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Fig.6, caption=
The modal damping ratios tracking results of the girder of Sutong Bridge, figureFileSmall=tepJThKp/9AEUT2C1AjMEQ==, figureFileBig=+vEw9zpTvgGeRKq+pkGxQQ==, tableContent=null), ArticleFig(id=1228042461071733742, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=图6, caption=
苏通大桥主梁模态阻尼比追踪结果, figureFileSmall=tepJThKp/9AEUT2C1AjMEQ==, figureFileBig=+vEw9zpTvgGeRKq+pkGxQQ==, tableContent=null), ArticleFig(id=1228042461164008434, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Fig.7, caption=
The variation of modal frequencies of the girder with the temperature, figureFileSmall=C2yku+94dbQdz3PlQolLIQ==, figureFileBig=aXdbizai37azwG7yv2a5BA==, tableContent=null), ArticleFig(id=1228042461277254648, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=图7, caption=
主梁模态频率随温度的变化, figureFileSmall=C2yku+94dbQdz3PlQolLIQ==, figureFileBig=aXdbizai37azwG7yv2a5BA==, tableContent=null), ArticleFig(id=1228042461356946426, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Fig.8, caption=
The variation of modal frequencies of the girder with the average wind speed, figureFileSmall=2d06eYt5bX7K758vkA832g==, figureFileBig=cBXdlNjB4p5aj68Oi9nQCA==, tableContent=null), ArticleFig(id=1228042461453415419, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=图8, caption=
主梁模态频率随平均风速的变化, figureFileSmall=2d06eYt5bX7K758vkA832g==, figureFileBig=cBXdlNjB4p5aj68Oi9nQCA==, tableContent=null), ArticleFig(id=1228042461537301504, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Fig.9, caption=
The variation of modal damping ratios of the girder with the average wind speed, figureFileSmall=op7xEkGhF/Kh0xkn6wDVKw==, figureFileBig=LSoWD03JAKc38MyDp6kcKg==, tableContent=null), ArticleFig(id=1228042461642158082, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=图9, caption=
主梁模态阻尼比随平均风速的变化, figureFileSmall=op7xEkGhF/Kh0xkn6wDVKw==, figureFileBig=LSoWD03JAKc38MyDp6kcKg==, tableContent=null), ArticleFig(id=1228042461772181511, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=EN, label=Tab.1, caption=
Statistics of the modal parameters identification results of Sutong Bridge
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模态频率 | 模态阻尼比 | 模态振型 | 记号 |
|---|
| 均值/Hz | COV/% | 均值/% | COV/% |
|---|
| 0.1084 | 3.15 | 3.42 | 65.18 | 对称侧弯 | LS1 |
| 0.1849 | 0.31 | 0.82 | 47.43 | 对称竖弯 | VS1 |
| 0.2176 | 0.34 | 0.80 | 54.10 | 反对称竖弯 | VAS1 |
| 0.3336 | 0.71 | 2.27 | 18.82 | 对称竖弯 | VS2 |
| 0.3887 | 0.68 | 2.01 | 27.93 | 反对称竖弯 | VAS2 |
| 0.4471 | 0.58 | 1.18 | 33.00 | 对称竖弯 | VS3 |
| 0.5274 | 0.57 | 1.45 | 31.19 | 对称竖弯 | VS4 |
| 0.5718 | 0.52 | 1.13 | 53.21 | 扭转 | T1 |
| 0.6200 | 0.66 | 1.65 | 25.52 | 扭转 | T2 |
| 0.6641 | 1.04 | 2.06 | 23.53 | 对称竖弯 | VS5 |
), ArticleFig(id=1228042461906399245, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228011506890113962, language=CN, label=表1, caption=
苏通大桥模态参数识别结果统计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模态频率 | 模态阻尼比 | 模态振型 | 记号 |
|---|
| 均值/Hz | COV/% | 均值/% | COV/% |
|---|
| 0.1084 | 3.15 | 3.42 | 65.18 | 对称侧弯 | LS1 |
| 0.1849 | 0.31 | 0.82 | 47.43 | 对称竖弯 | VS1 |
| 0.2176 | 0.34 | 0.80 | 54.10 | 反对称竖弯 | VAS1 |
| 0.3336 | 0.71 | 2.27 | 18.82 | 对称竖弯 | VS2 |
| 0.3887 | 0.68 | 2.01 | 27.93 | 反对称竖弯 | VAS2 |
| 0.4471 | 0.58 | 1.18 | 33.00 | 对称竖弯 | VS3 |
| 0.5274 | 0.57 | 1.45 | 31.19 | 对称竖弯 | VS4 |
| 0.5718 | 0.52 | 1.13 | 53.21 | 扭转 | T1 |
| 0.6200 | 0.66 | 1.65 | 25.52 | 扭转 | T2 |
| 0.6641 | 1.04 | 2.06 | 23.53 | 对称竖弯 | VS5 |
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