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Considering the uncertainty associated with structural boundary conditions, a method for modifying the boundary constraint static model of beam structures was proposed based on the homotopy stochastic finite element method.The overall modification of both the beam body elements and boundary elements was achieved using uncertain static measurement data. By employing the static condensation method, computational degrees of freedom were ensured to match measured degrees of freedom. Regularization methods were applied to mitigate ill-conditioned solutions in modification equations for stochastic models. The probabilistic residual minimization method enables optimal selection of homotopy coefficients, ensured accurate identification of boundary constraints and precise overall modification. Finally, simulations on variable-section concrete beams and static loading tests on aluminum alloy beams were conducted to verify the effectiveness of this approach.
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考虑到结构边界条件的不确定性,基于同伦随机有限元方法,提出了一种梁结构边界约束静力模型修正方法。基于不确定的静力测量数据,实现了梁身单元与边界单元的整体修正。静力凝聚方法能够保证计算自由度与测量自由度相匹配。正则化方法可以减少随机模型修正方程病态解的问题。概率残差最小化法实现同伦系数的最优选择,保证了边界约束的精确识别和整体修正的精度。最后,通过变截面混凝土梁数值算例和铝合金梁的静力加载试验,验证了该方法的有效性。
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, authorsList=胡建伟, 祁灿, 朱礼平, 吴志峰, 黄斌, 陈学龙)}, authors=[Author(id=1241029748151874235, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=411088120@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241029748265120449, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, authorId=1241029748151874235, language=EN, stringName=Jianwei HU, firstName=Jianwei, middleName=null, lastName=HU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.WSGRI Engineering & Surveying Incorporation Limited, Wuhan 430080, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241029748349006536, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, authorId=1241029748151874235, language=CN, stringName=胡建伟, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.中冶武勘工程技术有限公司,武汉 430080, bio={"content":"
胡建伟,男,1988年生,湖北黄冈人,硕士,高级工程师;主要研究方向为地下结构的健康监测;E-mail:411088120@qq.com。
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胡建伟,男,1988年生,湖北黄冈人,硕士,高级工程师;主要研究方向为地下结构的健康监测;E-mail:411088120@qq.com。
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2.China Gezhouba Group Corporation of Power Company, Yichang 443002, China
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2.中国葛洲坝集团电力有限责任公司,宜昌 443002
4.武汉理工大学 土木工程与建筑学院,武汉 430070, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241029747740832420, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, xref=2., ext=[AuthorCompanyExt(id=1241029747749221027, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, companyId=1241029747740832420, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3.WISDRI Wuhan Architecture Design Co., Ltd., Wuhan 430000, China
4.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241029748906848991, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, authorId=1241029748726493912, language=CN, stringName=朱礼平, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, 4, address=
3.中冶南方武汉建筑设计有限公司,武汉 430000
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4.武汉理工大学 土木工程与建筑学院,武汉 430070)])]), Author(id=1241029748978152163, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wuzhifeng_tujian@whut.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241029750471324393, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, authorId=1241029748978152163, language=EN, stringName=Zhifeng WU, firstName=Zhifeng, middleName=null, lastName=WU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
5.School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241029750546821869, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, authorId=1241029748978152163, language=CN, stringName=吴志峰, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4.武汉理工大学 土木工程与建筑学院,武汉 430070
5.华中科技大学 土木与水利工程学院,武汉 430074, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241029747942159020, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, xref=4., ext=[AuthorCompanyExt(id=1241029747950547630, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, companyId=1241029747942159020, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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5.华中科技大学 土木与水利工程学院,武汉 430074)])]), Author(id=1241029750655873777, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, 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=1241029750811063030, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, authorId=1241029750655873777, language=EN, stringName=Bin HUANG, firstName=Bin, middleName=null, lastName=HUANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241029750915920634, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, authorId=1241029750655873777, language=CN, stringName=黄斌, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4.武汉理工大学 土木工程与建筑学院,武汉 430070, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241029747942159020, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, xref=4., ext=[AuthorCompanyExt(id=1241029747950547630, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, companyId=1241029747942159020, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4.武汉理工大学 土木工程与建筑学院,武汉 430070)])]), Author(id=1241029751020778239, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, orderNo=5, 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=1241029751121441538, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, authorId=1241029751020778239, language=EN, stringName=Xuelong CHEN, firstName=Xuelong, middleName=null, lastName=CHEN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.WSGRI Engineering & Surveying Incorporation Limited, Wuhan 430080, China
4.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241029751196939012, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, authorId=1241029751020778239, language=CN, stringName=陈学龙, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.中冶武勘工程技术有限公司,武汉 430080
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1.中冶武勘工程技术有限公司,武汉 430080)]), AuthorCompany(id=1241029747942159020, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, xref=4., ext=[AuthorCompanyExt(id=1241029747950547630, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, companyId=1241029747942159020, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Finite element model of variable cross-section beam, figureFileSmall=R5c7hubCsSLHpc9jotHYPg==, figureFileBig=AiRrhRXuVbMJFyJ939uVPw==, tableContent=null), ArticleFig(id=1241029752409092900, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图1, caption=
变截面梁有限元模型, figureFileSmall=R5c7hubCsSLHpc9jotHYPg==, figureFileBig=AiRrhRXuVbMJFyJ939uVPw==, tableContent=null), ArticleFig(id=1241029752602030890, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Fig.2, caption=
Statistics value of beam element updating factors, figureFileSmall=sLsleejmpesKzdNR6qgdWQ==, figureFileBig=3zuqX2jAUNzn8R6Omhuipg==, tableContent=null), ArticleFig(id=1241029752685916972, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图2, caption=
梁单元修正因子统计值, figureFileSmall=sLsleejmpesKzdNR6qgdWQ==, figureFileBig=3zuqX2jAUNzn8R6Omhuipg==, tableContent=null), ArticleFig(id=1241029752778191663, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Fig.3, caption=
Probability density function of updating factors of element 1, figureFileSmall=GUfZI4eUMsd5xHDpVZC7aw==, figureFileBig=imJLKp7GKi4lzFXMUDFqUg==, tableContent=null), ArticleFig(id=1241029752870466354, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图3, caption=
第1单元修正因子概率密度函数, figureFileSmall=GUfZI4eUMsd5xHDpVZC7aw==, figureFileBig=imJLKp7GKi4lzFXMUDFqUg==, tableContent=null), ArticleFig(id=1241029752954352435, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Fig.4, caption=
Probability density function of updating factors of element 8, figureFileSmall=AvEJIljhmJjKws0KJklPwA==, figureFileBig=p3Z92l26J1kC6T1kvPnIjw==, tableContent=null), ArticleFig(id=1241029753021461301, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图4, caption=
第8单元修正因子概率密度函数, figureFileSmall=AvEJIljhmJjKws0KJklPwA==, figureFileBig=p3Z92l26J1kC6T1kvPnIjw==, tableContent=null), ArticleFig(id=1241029753096958777, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Fig.5, caption=
Statistics value of beam nodal deflection, figureFileSmall=GKcaU6XkF6hlPl2zj1Ri1g==, figureFileBig=403t3MVOU+w37J1kJdv+1A==, tableContent=null), ArticleFig(id=1241029753176650557, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图5, caption=
梁节点挠度统计值, figureFileSmall=GKcaU6XkF6hlPl2zj1Ri1g==, figureFileBig=403t3MVOU+w37J1kJdv+1A==, tableContent=null), ArticleFig(id=1241029753264730943, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Fig.6, caption=
Probability density function of deflections of node 5, figureFileSmall=y2AjdVkPHZmLv42X/PyhJQ==, figureFileBig=gn/7YcpNf+13nba9bilRpw==, tableContent=null), ArticleFig(id=1241029753327645506, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图6, caption=
第5节点挠度概率密度函数, figureFileSmall=y2AjdVkPHZmLv42X/PyhJQ==, figureFileBig=gn/7YcpNf+13nba9bilRpw==, tableContent=null), ArticleFig(id=1241029753382171460, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Fig.7, caption=
Probability density function of deflections of node 12, figureFileSmall=8HyBjrRe3rKFfwNd874/tg==, figureFileBig=w3NA+clC1PO4ezPAsHjytg==, tableContent=null), ArticleFig(id=1241029753453474631, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图7, caption=
第12节点挠度概率密度函数, figureFileSmall=8HyBjrRe3rKFfwNd874/tg==, figureFileBig=w3NA+clC1PO4ezPAsHjytg==, tableContent=null), ArticleFig(id=1241029754929869642, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Fig.8, caption=
Loading test of aluminum alloy beam, figureFileSmall=g/s2QvnBXIu3GXHGcgB7Eg==, figureFileBig=9N79EAH6opjZnGm25Tzn6g==, tableContent=null), ArticleFig(id=1241029755022144334, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图8, caption=
铝合金梁加载试验, figureFileSmall=g/s2QvnBXIu3GXHGcgB7Eg==, figureFileBig=9N79EAH6opjZnGm25Tzn6g==, tableContent=null), ArticleFig(id=1241029755093447505, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Fig.9, caption=
Statistics value of element updating factors, figureFileSmall=4ownSersHb2Yr5fuhoP+Zw==, figureFileBig=OE9sWotADM1b7iClnRhBKA==, tableContent=null), ArticleFig(id=1241029755173139284, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图9, caption=
单元修正因子统计值, figureFileSmall=4ownSersHb2Yr5fuhoP+Zw==, figureFileBig=OE9sWotADM1b7iClnRhBKA==, tableContent=null), ArticleFig(id=1241029755248636754, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Fig.10, caption=
Statistics value of nodal deflections, figureFileSmall=nAITzCr/wrBMrsaj1F1H1A==, figureFileBig=boI+zpwLJHbqsoPXStuDwA==, tableContent=null), ArticleFig(id=1241029755353494356, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=图10, caption=
节点挠度统计值, figureFileSmall=nAITzCr/wrBMrsaj1F1H1A==, figureFileBig=boI+zpwLJHbqsoPXStuDwA==, tableContent=null), ArticleFig(id=1241029755433186136, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Tab.1, caption=
Reduction rate of element bending stiffness
, figureFileSmall=null, figureFileBig=null, tableContent=
单元编号 Element number | 1 | 2 | 3 | 4 | 5 | 6 |
|---|
刚度折减率 Reduction rate | 0.1 | 0.15 | 0.1 | 0.15 | 0.1 | 0.2 |
单元编号 Element number | 7 | 8 | 9 | 10 | 11 | 12 |
刚度折减率 Reduction rate | 0.1 | 0.15 | 0.1 | 0.15 | 0.1 | 0.2 |
), ArticleFig(id=1241029755529655126, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=表1, caption=
单元抗弯刚度折减率
, figureFileSmall=null, figureFileBig=null, tableContent=
单元编号 Element number | 1 | 2 | 3 | 4 | 5 | 6 |
|---|
刚度折减率 Reduction rate | 0.1 | 0.15 | 0.1 | 0.15 | 0.1 | 0.2 |
单元编号 Element number | 7 | 8 | 9 | 10 | 11 | 12 |
刚度折减率 Reduction rate | 0.1 | 0.15 | 0.1 | 0.15 | 0.1 | 0.2 |
), ArticleFig(id=1241029755718398807, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=EN, label=Tab.2, caption=
Mean value and coefficient of variation of test beam nodal deflection at F=30 N
, figureFileSmall=null, figureFileBig=null, tableContent=
节点编号 Node number | 2 | 3 | 4 | 5 | 6 |
|---|
均值 Mean value/m | -4.48×10-7 | -1.24×10-6 | -1.52×10-6 | -1.17×10-6 | -4.33×10-6 |
变异系数 Coefficient of variation | 0.018 4 | 0.025 1 | 0.041 2 | 0.027 3 | 0.020 1 |
), ArticleFig(id=1241029755798090585, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241029729302672191, language=CN, label=表2, caption=
F=30 N荷载下试验梁节点测量挠度的均值与变异系数
, figureFileSmall=null, figureFileBig=null, tableContent=
节点编号 Node number | 2 | 3 | 4 | 5 | 6 |
|---|
均值 Mean value/m | -4.48×10-7 | -1.24×10-6 | -1.52×10-6 | -1.17×10-6 | -4.33×10-6 |
变异系数 Coefficient of variation | 0.018 4 | 0.025 1 | 0.041 2 | 0.027 3 | 0.020 1 |
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