Article(id=1227591339492176746, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591330579284357, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.202312006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1701360000000, receivedDateStr=2023-12-01, revisedDate=1706371200000, revisedDateStr=2024-01-28, acceptedDate=null, acceptedDateStr=null, onlineDate=1770610182878, onlineDateStr=2026-02-09, pubDate=1752076800000, pubDateStr=2025-07-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770610182878, onlineIssueDateStr=2026-02-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770610182878, creator=13701087609, updateTime=1770610182878, updator=13701087609, issue=Issue{id=1227591330579284357, tenantId=1146029695717560320, journalId=1225147924628267009, year='2025', volume='38', issue='7', pageStart='1363', pageEnd='1644', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1770610180719, creator=13701087609, updateTime=1770610389679, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1227592206953935678, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591330579284357, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1227592206953935679, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591330579284357, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1529, endPage=1537, ext={EN=ArticleExt(id=1227591342847619977, articleId=1227591339492176746, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Field test and analysis of influence factors on the dynamic characteristics of self-supporting flat arm tower crane under multiple working conditions, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In order to obtain more accurate and refined dynamic characteristics of the flat boom tower crane,the field test of the dynamic response of the typical freestanding flat boom tower crane was carried out considering the influence of lifting positions,lifting heights (rope lengths) and lifting weights. The test results show that the vibration along the boom axial direction and vertical direction has good synchronization. However,the response correlation between the horizontal direction of the vertical boom and the axial and vertical direction of the tower crane boom is relatively low. The natural frequencies identified by the half-power bandwidth method and the SSI-COV method are basically the same,with the difference of lifting positions,rope lengths and lifting weights,the natural frequencies of flat boom tower crane will fluctuate around the natural frequency under no load. There are some differences in the identification results of the damping ratio between the two methods,in most working conditions,the damping ratio identified by the SSI-COV method is smaller than that identified by the half power bandwidth method. Based on orthogonal test analysis,the influence of the above factors on the natural frequency and damping ratio of the tower crane is not significant,and there is no main effect. In addition,the finite element model of the flat arm tower crane is optimized,and the frequency of the updated model is in good agreement with the test results. The boom vibration mode function under no-load condition was fitted,the amplitude distribution along the boom length exhibits an approximately linear,however,when the lifting weight appears at the end or root of the boom,the boom vibration mode may show an obvious nonliner characteristics.
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为获得更为准确、精细化的平臂塔吊动力特性,考虑不同起吊位置、离地高度(吊绳长度)和吊重参数影响,开展了多工况典型自立式平臂塔吊动力特性现场实测。结果表明:臂架轴向和竖直方向振动具有较好的同步性,垂直臂架水平方向与轴向、竖直方向响应间相关性整体水平较低。采用半功率带宽法和SSI-COV方法识别出来的结构固有频率基本一致,随着起吊位置、吊绳长度和吊重的不同,塔吊固有频率值会较空载时发生左右波动;两种方法阻尼比识别结果差异较明显,多数工况下,SSI-COV方法识别出来的阻尼比要小于半功率带宽法识别结果。基于正交试验分析,可知上述三种影响因素(参数)对塔吊振动固有频率、阻尼比的影响均不显著,不存在主效应。开展了塔吊有限元模型优化,修正后的塔吊模型频率与实测结果能够较好地吻合。拟合了空载工况下的臂架振型函数,空载时,臂架振幅沿臂长分布基本呈线性,当吊重位于臂架端部或根部时,振幅分布则表现出明显的非线性特征。
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1.School of Civil Engineering and Transportation,North China University of Water Resources and Electric Power,Zhengzhou 450045,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1227654458868433474, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, authorId=1227654458591609385, language=CN, stringName=张庆华, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.华北水利水电大学土木与交通学院,河南 郑州 450045, bio={"content":"
张庆华(1977—),男,博士,副教授。E-mail: zqh@ncwu.edu.cn
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张庆华(1977—),男,博士,副教授。E-mail: zqh@ncwu.edu.cn
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2.China Construction Third Engineering Bureau Group Co., Ltd., Wuhan 430064,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1227654459539522187, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, authorId=1227654459304641139, language=CN, stringName=杨辉, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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79(1-2):135-150., articleTitle=Alongwind static equivalent wind loads and responses of tall buildings. Part Ⅰ:unfavorable distributions of static equivalent wind loads, refAbstract=null)], funds=[Fund(id=1227654467697442864, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, awardId=52378300, language=CN, fundingSource=国家自然科学基金资助项目(52378300), fundOrder=null, country=null), Fund(id=1227654467802300473, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, awardId=242300421014, language=CN, fundingSource=河南省杰出青年科学基金资助项目(242300421014), fundOrder=null, country=null), Fund(id=1227654467890380862, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, awardId=242103810102, language=CN, fundingSource=河南省科技研发计划联合基金(应用攻关类)项目(242103810102), fundOrder=null, country=null), Fund(id=1227654468024598596, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, awardId=22A410003, language=CN, fundingSource=河南省高等学校重点科研项目(22A410003), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1227654457035522572, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, xref=1., ext=[AuthorCompanyExt(id=1227654457048105485, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, companyId=1227654457035522572, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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The sketch of construction site, figureFileSmall=N/OKUVa25JlQ6obMcduyPw==, figureFileBig=dQ+I5M+fXxpk0NEOgcywQA==, tableContent=null), ArticleFig(id=1227654463259870053, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=图1, caption=
施工现场图, figureFileSmall=N/OKUVa25JlQ6obMcduyPw==, figureFileBig=dQ+I5M+fXxpk0NEOgcywQA==, tableContent=null), ArticleFig(id=1227654463385699185, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Fig. 2, caption=
Sensor fixed positions and coordinate system of field test, figureFileSmall=ixAj7jKYFltWk2/b1Ui42Q==, figureFileBig=D8saXn1DulCri5297dyp9Q==, tableContent=null), ArticleFig(id=1227654463477973883, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=图2, caption=
实测传感器固定及坐标系, figureFileSmall=ixAj7jKYFltWk2/b1Ui42Q==, figureFileBig=D8saXn1DulCri5297dyp9Q==, tableContent=null), ArticleFig(id=1227654463599608710, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Fig. 3, caption=
Field test positions, figureFileSmall=6HDvQAZVgLxhObc0ABv/BA==, figureFileBig=Xf/D8Wp42cMOQjL/ISOF9A==, tableContent=null), ArticleFig(id=1227654463683494802, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=图3, caption=
实测工况位置简图, figureFileSmall=6HDvQAZVgLxhObc0ABv/BA==, figureFileBig=Xf/D8Wp42cMOQjL/ISOF9A==, tableContent=null), ArticleFig(id=1227654463763186584, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Fig. 4, caption=
Tower crane mode shapes of updated model, figureFileSmall=cvPq5KupDZ3t29KHwvOaxA==, figureFileBig=fH8GclVma6F41RdyNWTqaA==, tableContent=null), ArticleFig(id=1227654463863849892, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=图4, caption=
塔吊修正模型振型图, figureFileSmall=cvPq5KupDZ3t29KHwvOaxA==, figureFileBig=fH8GclVma6F41RdyNWTqaA==, tableContent=null), ArticleFig(id=1227654463977096107, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Fig. 5, caption=
Boom mode shapes of tower crane, figureFileSmall=7eeLkzhWJa4Opk6H5/UjnA==, figureFileBig=utxAGdulhxuK9/gEigEBzQ==, tableContent=null), ArticleFig(id=1227654464098730930, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=图5, caption=
臂架振型, figureFileSmall=7eeLkzhWJa4Opk6H5/UjnA==, figureFileBig=utxAGdulhxuK9/gEigEBzQ==, tableContent=null), ArticleFig(id=1227654464216171452, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Tab. 1, caption=
Basic parameters of the tested tower crane
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基本参数 | 数值 |
|---|
| 最大工作幅度/m | 65 |
| 起重臂侧/m | 66.8 |
| 平衡臂侧/m | 15.5 |
| 最大起重量/kg | 10×103 |
| 平衡重/kg | 1.48×104 |
| 标准节(宽/高)/m | 1.8/2.8 |
| 独立式最大起升高度/m | 46 |
| 实测现场塔吊高度/m | 40 |
| 起升速度/(m·min-1) | 0~95 |
| 额定起重力矩/(kN·m) | 1600 |
| 最大起重力矩/(kN·m) | 1920 |
| 工作幅度(最大/最小)/m | 2.5/65 |
), ArticleFig(id=1227654464417498048, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=表1, caption=
实测塔吊基本参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基本参数 | 数值 |
|---|
| 最大工作幅度/m | 65 |
| 起重臂侧/m | 66.8 |
| 平衡臂侧/m | 15.5 |
| 最大起重量/kg | 10×103 |
| 平衡重/kg | 1.48×104 |
| 标准节(宽/高)/m | 1.8/2.8 |
| 独立式最大起升高度/m | 46 |
| 实测现场塔吊高度/m | 40 |
| 起升速度/(m·min-1) | 0~95 |
| 额定起重力矩/(kN·m) | 1600 |
| 最大起重力矩/(kN·m) | 1920 |
| 工作幅度(最大/最小)/m | 2.5/65 |
), ArticleFig(id=1227654464513967045, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Tab. 2, caption=
Orthogonal test design
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 起吊位置 | 吊绳长度(离地高度) | 吊重(质量) |
|---|
| 空载 | — | — | — |
| C1 | L1 | H1 | m1 |
| C2 | L2 | H2 | m1 |
| C3 | L3 | H3 | m1 |
| C4 | L3 | H2 | m2 |
| C5 | L2 | H1 | m2 |
| C6 | L1 | H3 | m2 |
| C7 | L1 | H2 | m3 |
| C8 | L2 | H3 | m3 |
| C9 | L3 | H1 | m3 |
), ArticleFig(id=1227654464618824648, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=表2, caption=
正交试验设计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 起吊位置 | 吊绳长度(离地高度) | 吊重(质量) |
|---|
| 空载 | — | — | — |
| C1 | L1 | H1 | m1 |
| C2 | L2 | H2 | m1 |
| C3 | L3 | H3 | m1 |
| C4 | L3 | H2 | m2 |
| C5 | L2 | H1 | m2 |
| C6 | L1 | H3 | m2 |
| C7 | L1 | H2 | m3 |
| C8 | L2 | H3 | m3 |
| C9 | L3 | H1 | m3 |
), ArticleFig(id=1227654464732070865, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Tab. 3, caption=
Basic parameters of orthogonal test
, figureFileSmall=null, figureFileBig=null, tableContent=
| 吊重/(×103 kg) | 吊绳长度(离地高度)/m | 起吊位置/m |
|---|
| m1 | m2 | m3 | H1 | H2 | H3 | L1 | L2 | L3 |
| 0.52 | 0.75 | 1.30 | 11 | 20 | 30 | 63 | 36 | 2 |
), ArticleFig(id=1227654464794985430, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=表3, caption=
正交试验基本参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 吊重/(×103 kg) | 吊绳长度(离地高度)/m | 起吊位置/m |
|---|
| m1 | m2 | m3 | H1 | H2 | H3 | L1 | L2 | L3 |
| 0.52 | 0.75 | 1.30 | 11 | 20 | 30 | 63 | 36 | 2 |
), ArticleFig(id=1227654464857899998, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Tab. 4, caption=
The wind speeds during field tests
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 风速/(m·s-1) |
|---|
| 开始 | 中间 | 结束 |
|---|
| 空载 | 1.9 | 1.2 | 1.1 |
| C1 | 1.5 | 1.3 | 0.7 |
| C2 | 1.4 | 0.9 | 2.1 |
| C3 | 1.4 | 0.9 | 1.6 |
| C4 | 2.2 | 1.6 | 0.3 |
| C5 | 0.8 | 2.0 | 0.6 |
| C6 | 1.9 | 2.1 | 2.0 |
| C7 | 2.0 | 2.4 | 1.0 |
| C8 | 1.6 | 2.4 | 0.9 |
| C9 | 2.0 | 1.2 | 1.9 |
), ArticleFig(id=1227654464987923430, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=表4, caption=
实测时的风速记录
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 风速/(m·s-1) |
|---|
| 开始 | 中间 | 结束 |
|---|
| 空载 | 1.9 | 1.2 | 1.1 |
| C1 | 1.5 | 1.3 | 0.7 |
| C2 | 1.4 | 0.9 | 2.1 |
| C3 | 1.4 | 0.9 | 1.6 |
| C4 | 2.2 | 1.6 | 0.3 |
| C5 | 0.8 | 2.0 | 0.6 |
| C6 | 1.9 | 2.1 | 2.0 |
| C7 | 2.0 | 2.4 | 1.0 |
| C8 | 1.6 | 2.4 | 0.9 |
| C9 | 2.0 | 1.2 | 1.9 |
), ArticleFig(id=1227654465092781032, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Tab. 5, caption=
Velocity responses correlations of field tests
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 方向 | XA | XB | YA | YB | ZA | ZB | 工况 | 方向 | XA | XB | YA | YB | ZA | ZB |
|---|
| 空载 | XA | 1.00 | -0.13 | 0.08 | -0.05 | 0.04 | 0.13 | C5 | XA | 1.00 | -0.95 | 0.10 | -0.03 | 0.00 | 0.01 |
| XB | -0.13 | 1.00 | 0.07 | -0.82 | 0.11 | 0.30 | XB | -0.95 | 1.00 | -0.11 | 0.04 | -0.01 | -0.02 |
| YA | 0.08 | 0.07 | 1.00 | -0.50 | 0.97 | 0.73 | YA | 0.10 | -0.11 | 1.00 | -0.99 | 0.88 | 0.87 |
| YB | -0.05 | -0.82 | -0.50 | 1.00 | -0.52 | -0.78 | YB | -0.03 | 0.04 | -0.99 | 1.00 | -0.90 | -0.90 |
| ZA | 0.04 | 0.11 | 0.97 | -0.52 | 1.00 | 0.77 | ZA | 0.00 | -0.01 | 0.88 | -0.90 | 1.00 | 0.99 |
| ZB | 0.13 | 0.30 | 0.73 | -0.78 | 0.77 | 1.00 | ZB | 0.01 | -0.02 | 0.87 | -0.90 | 0.99 | 1.00 |
| C2 | XA | 1.00 | -1.00 | 0.19 | -0.06 | -0.01 | 0.02 | C8 | XA | 1.00 | -0.99 | 0.33 | -0.09 | -0.02 | 0.03 |
| XB | -1.00 | 1.00 | -0.19 | 0.06 | 0.01 | -0.02 | XB | -0.99 | 1.00 | -0.33 | 0.09 | 0.02 | -0.03 |
| YA | 0.19 | -0.19 | 1.00 | -0.99 | 0.91 | 0.91 | YA | 0.33 | -0.33 | 1.00 | -0.96 | 0.79 | 0.80 |
| YB | -0.06 | 0.06 | -0.99 | 1.00 | -0.95 | -0.95 | YB | -0.09 | 0.09 | -0.96 | 1.00 | -0.86 | -0.87 |
| ZA | -0.01 | 0.01 | 0.91 | -0.95 | 1.00 | 1.00 | ZA | -0.02 | 0.02 | 0.79 | -0.86 | 1.00 | 0.99 |
| ZB | 0.02 | -0.02 | 0.91 | -0.95 | 1.00 | 1.00 | ZB | 0.03 | -0.03 | 0.80 | -0.87 | 0.99 | 1.00 |
), ArticleFig(id=1227654465247970291, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=表5, caption=
测点速度响应相关性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 方向 | XA | XB | YA | YB | ZA | ZB | 工况 | 方向 | XA | XB | YA | YB | ZA | ZB |
|---|
| 空载 | XA | 1.00 | -0.13 | 0.08 | -0.05 | 0.04 | 0.13 | C5 | XA | 1.00 | -0.95 | 0.10 | -0.03 | 0.00 | 0.01 |
| XB | -0.13 | 1.00 | 0.07 | -0.82 | 0.11 | 0.30 | XB | -0.95 | 1.00 | -0.11 | 0.04 | -0.01 | -0.02 |
| YA | 0.08 | 0.07 | 1.00 | -0.50 | 0.97 | 0.73 | YA | 0.10 | -0.11 | 1.00 | -0.99 | 0.88 | 0.87 |
| YB | -0.05 | -0.82 | -0.50 | 1.00 | -0.52 | -0.78 | YB | -0.03 | 0.04 | -0.99 | 1.00 | -0.90 | -0.90 |
| ZA | 0.04 | 0.11 | 0.97 | -0.52 | 1.00 | 0.77 | ZA | 0.00 | -0.01 | 0.88 | -0.90 | 1.00 | 0.99 |
| ZB | 0.13 | 0.30 | 0.73 | -0.78 | 0.77 | 1.00 | ZB | 0.01 | -0.02 | 0.87 | -0.90 | 0.99 | 1.00 |
| C2 | XA | 1.00 | -1.00 | 0.19 | -0.06 | -0.01 | 0.02 | C8 | XA | 1.00 | -0.99 | 0.33 | -0.09 | -0.02 | 0.03 |
| XB | -1.00 | 1.00 | -0.19 | 0.06 | 0.01 | -0.02 | XB | -0.99 | 1.00 | -0.33 | 0.09 | 0.02 | -0.03 |
| YA | 0.19 | -0.19 | 1.00 | -0.99 | 0.91 | 0.91 | YA | 0.33 | -0.33 | 1.00 | -0.96 | 0.79 | 0.80 |
| YB | -0.06 | 0.06 | -0.99 | 1.00 | -0.95 | -0.95 | YB | -0.09 | 0.09 | -0.96 | 1.00 | -0.86 | -0.87 |
| ZA | -0.01 | 0.01 | 0.91 | -0.95 | 1.00 | 1.00 | ZA | -0.02 | 0.02 | 0.79 | -0.86 | 1.00 | 0.99 |
| ZB | 0.02 | -0.02 | 0.91 | -0.95 | 1.00 | 1.00 | ZB | 0.03 | -0.03 | 0.80 | -0.87 | 0.99 | 1.00 |
), ArticleFig(id=1227654465398965242, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Tab. 6, caption=
Results of natural frequency and damping ratio identification of tower crane
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方向 | 工况 | 固有频率/Hz | 阻尼比/% |
|---|
| 半功率带宽法 | SSI-COV方法 | 半功率带宽法 | SSI-COV方法 |
|---|
| X向 | 空载 | 0.106 | 0.105 | 3.871 | 0.834 |
| C1 | 0.114 | 0.114 | 3.194 | 0.918 |
| C2 | 0.124 | 0.095 | 2.593 | 3.346 |
| C3 | 0.107 | 0.107 | 3.129 | 0.953 |
| C4 | 0.107 | 0.108 | 3.295 | 1.133 |
| C5 | 0.110 | 0.111 | 3.894 | 3.205 |
| C6 | 0.085 | 0.085 | 4.213 | 1.573 |
| C7 | 0.073 | 0.072 | 4.527 | 0.795 |
| C8 | 0.091 | 0.091 | 3.862 | 0.951 |
| C9 | 0.088 | 0.088 | 3.580 | 2.973 |
| Z向 | 空载 | 0.210 | 0.205 | 1.538 | 0.679 |
| C1 | 0.195 | 0.194 | 1.681 | 0.537 |
| C2 | 0.205 | 0.205 | 1.565 | 0.529 |
| C3 | 0.147 | 0.146 | 2.197 | 0.686 |
| C4 | 0.206 | 0.206 | 2.565 | 1.904 |
| C5 | 0.204 | 0.204 | 1.561 | 0.404 |
| C6 | 0.209 | 0.188 | 1.620 | 1.332 |
| C7 | 0.186 | 0.186 | 1.696 | 0.288 |
| C8 | 0.205 | 0.205 | 1.832 | 1.047 |
| C9 | 0.212 | 0.213 | 1.672 | 1.601 |
), ArticleFig(id=1227654465516404739, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=表6, caption=
塔吊固有频率和阻尼比识别结果
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| 方向 | 工况 | 固有频率/Hz | 阻尼比/% |
|---|
| 半功率带宽法 | SSI-COV方法 | 半功率带宽法 | SSI-COV方法 |
|---|
| X向 | 空载 | 0.106 | 0.105 | 3.871 | 0.834 |
| C1 | 0.114 | 0.114 | 3.194 | 0.918 |
| C2 | 0.124 | 0.095 | 2.593 | 3.346 |
| C3 | 0.107 | 0.107 | 3.129 | 0.953 |
| C4 | 0.107 | 0.108 | 3.295 | 1.133 |
| C5 | 0.110 | 0.111 | 3.894 | 3.205 |
| C6 | 0.085 | 0.085 | 4.213 | 1.573 |
| C7 | 0.073 | 0.072 | 4.527 | 0.795 |
| C8 | 0.091 | 0.091 | 3.862 | 0.951 |
| C9 | 0.088 | 0.088 | 3.580 | 2.973 |
| Z向 | 空载 | 0.210 | 0.205 | 1.538 | 0.679 |
| C1 | 0.195 | 0.194 | 1.681 | 0.537 |
| C2 | 0.205 | 0.205 | 1.565 | 0.529 |
| C3 | 0.147 | 0.146 | 2.197 | 0.686 |
| C4 | 0.206 | 0.206 | 2.565 | 1.904 |
| C5 | 0.204 | 0.204 | 1.561 | 0.404 |
| C6 | 0.209 | 0.188 | 1.620 | 1.332 |
| C7 | 0.186 | 0.186 | 1.696 | 0.288 |
| C8 | 0.205 | 0.205 | 1.832 | 1.047 |
| C9 | 0.212 | 0.213 | 1.672 | 1.601 |
), ArticleFig(id=1227654465642233866, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Tab. 7, caption=
Range analysis of orthogonal test
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| 因素 | X向固有频率/Hz | Z向固有频率/Hz | X向阻尼比/% | Z向阻尼比/% |
|---|
| | | RX_F | | | | RZ_F | | | | RX_D | | | | RZ_D |
|---|
| 起吊位置(L) | 0.090 | 0.099 | 0.101 | 0.011 | 0.189 | 0.205 | 0.188 | 0.017 | 1.095 | 2.501 | 1.686 | 1.405 | 0.719 | 0.660 | 1.397 | 0.737 |
| 离地高度(H) | 0.104 | 0.091 | 0.095 | 0.013 | 0.204 | 0.199 | 0.180 | 0.024 | 2.365 | 1.758 | 1.159 | 1.206 | 0.848 | 0.907 | 1.022 | 0.174 |
| 吊重(m) | 0.105 | 0.101 | 0.084 | 0.022 | 0.182 | 0.199 | 0.201 | 0.019 | 1.739 | 1.970 | 1.573 | 0.398 | 0.584 | 1.213 | 0.979 | 0.629 |
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正交试验极差分析
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| 因素 | X向固有频率/Hz | Z向固有频率/Hz | X向阻尼比/% | Z向阻尼比/% |
|---|
| | | RX_F | | | | RZ_F | | | | RX_D | | | | RZ_D |
|---|
| 起吊位置(L) | 0.090 | 0.099 | 0.101 | 0.011 | 0.189 | 0.205 | 0.188 | 0.017 | 1.095 | 2.501 | 1.686 | 1.405 | 0.719 | 0.660 | 1.397 | 0.737 |
| 离地高度(H) | 0.104 | 0.091 | 0.095 | 0.013 | 0.204 | 0.199 | 0.180 | 0.024 | 2.365 | 1.758 | 1.159 | 1.206 | 0.848 | 0.907 | 1.022 | 0.174 |
| 吊重(m) | 0.105 | 0.101 | 0.084 | 0.022 | 0.182 | 0.199 | 0.201 | 0.019 | 1.739 | 1.970 | 1.573 | 0.398 | 0.584 | 1.213 | 0.979 | 0.629 |
), ArticleFig(id=1227654465847754775, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Tab. 8, caption=
Analysis of variance of testing results
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| 指标 | 因素 | 分布检验统计量F值 | 显著性P值 |
|---|
| X_Freq | 起吊位置 | 0.563 | 0.640 |
| 离地高度(吊绳长度) | 0.803 | 0.555 |
| 吊重 | 2.308 | 0.302 |
| X_Damp | 起吊位置 | 0.739 | 0.575 |
| 离地高度(吊绳长度) | 0.540 | 0.649 |
| 吊重 | 0.059 | 0.944 |
| Z_Freq | 起吊位置 | 0.480 | 0.676 |
| 离地高度(吊绳长度) | 0.913 | 0.523 |
| 吊重 | 0.627 | 0.614 |
| Z_Damp | 起吊位置 | 1.030 | 0.493 |
| 离地高度(吊绳长度) | 0.048 | 0.954 |
| 吊重 | 0.621 | 0.617 |
), ArticleFig(id=1227654465969389598, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=表8, caption=
实测结果方差分析表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | 因素 | 分布检验统计量F值 | 显著性P值 |
|---|
| X_Freq | 起吊位置 | 0.563 | 0.640 |
| 离地高度(吊绳长度) | 0.803 | 0.555 |
| 吊重 | 2.308 | 0.302 |
| X_Damp | 起吊位置 | 0.739 | 0.575 |
| 离地高度(吊绳长度) | 0.540 | 0.649 |
| 吊重 | 0.059 | 0.944 |
| Z_Freq | 起吊位置 | 0.480 | 0.676 |
| 离地高度(吊绳长度) | 0.913 | 0.523 |
| 吊重 | 0.627 | 0.614 |
| Z_Damp | 起吊位置 | 1.030 | 0.493 |
| 离地高度(吊绳长度) | 0.048 | 0.954 |
| 吊重 | 0.621 | 0.617 |
), ArticleFig(id=1227654466061664286, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=EN, label=Tab. 9, caption=
Natural frequencies comparison of initial values,updated values and test values
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模态阶数 | 固有频率/Hz | 误差/% |
|---|
| 初始模型 | 修正模型 | 实测结果(SSI-COV) | 修正前 | 修正后 |
|---|
| 1阶 | 0.125 | 0.110 | 0.105 | 19.05 | 4.35 |
| 2阶 | 0.183 | 0.195 | 0.205 | -10.73 | -4.90 |
), ArticleFig(id=1227654466187493412, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591339492176746, language=CN, label=表9, caption=
塔吊有限元模型修正前后以及实测固有频率
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模态阶数 | 固有频率/Hz | 误差/% |
|---|
| 初始模型 | 修正模型 | 实测结果(SSI-COV) | 修正前 | 修正后 |
|---|
| 1阶 | 0.125 | 0.110 | 0.105 | 19.05 | 4.35 |
| 2阶 | 0.183 | 0.195 | 0.205 | -10.73 | -4.90 |
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