基于子结构的隐蔽损伤识别方法研究
|
摘要
针对隐蔽结构损伤识别存在精度和效率较低的问题,探索性地应用子结构法对结构的隐蔽损伤进行研究,建立了基于子结构的隐蔽损伤识别方法.该方法在采集可测部位结构的振动信号的基础上,利用扩展卡尔曼滤波技术对隐蔽结构的时变参数进行识别,进而判定隐蔽结构的损伤位置和损伤程度.该识别方法首先建立识别计算模型,划分子结构;其次应用扩展卡尔曼滤波构建隐蔽结构损伤识别的识别方程;最后应用识别方程对隐蔽结构的损伤进行识别.该方法为难以直接测量的特种部位损伤识别提供了理论基础,并为隐蔽结构的损伤识别提供了新的途径.
In order to solve the problem of the accuracy and efficiency of the concealed structure damage identification,the substructure method is used to study the concealed damage of the structure.Based on the method,the vibration signal can be measured in the acquisition part of the structure;the time-varying parameters of the structure are identified by using the extended Kalman filtering;and then the location and degree of damage of the concealed structure are determined.Based on the theory of damage identification,the feasibility of the method is verified by a case study.The identification method firstly establishes the recognition calculation model and divides the substructure.Secondly,the extended Calman filter is applied to construct the recognition equation of concealed structure damage identification.Finally,the damage identification of concealed structure is identified by using the recognition equation.This method provides a theoretical basis for the damage identification of special parts which are difficult to measure directly by human;and the method provides a new way for damage identification of concealed structures.
In order to solve the problem of the accuracy and efficiency of the concealed structure damage identification,the substructure method is used to study the concealed damage of the structure.Based on the method,the vibration signal can be measured in the acquisition part of the structure;the time-varying parameters of the structure are identified by using the extended Kalman filtering;and then the location and degree of damage of the concealed structure are determined.Based on the theory of damage identification,the feasibility of the method is verified by a case study.The identification method firstly establishes the recognition calculation model and divides the substructure.Secondly,the extended Calman filter is applied to construct the recognition equation of concealed structure damage identification.Finally,the damage identification of concealed structure is identified by using the recognition equation.This method provides a theoretical basis for the damage identification of special parts which are difficult to measure directly by human;and the method provides a new way for damage identification of concealed structures.
引文
[1]Idichandy V G,Ganapathy C.Structural integrity monitoring of fixed offshore platforms[C]//Proceedings of the IABSE Colloquium,Bergamo,1987:237-261.
[2]Yang Hezhen,Li Huajun.Damage localization of offshore platform under ambient excitation[J].China O-cean Engineering,2003,17(4):495-504.
[3]杨和振,李华军,黄维平,等.基于动力响应测试的海洋平台结构损伤诊断[C]//第十二届全国结构工程会议,重庆,2003:636-642.Yang Hezhen,Li Huajun,Huang Weiping,et al.Nondestructive damage detection in offshore platform structure via vibration monitoring[C]//The Twelfth National Conference on Structural Engineering,2003:636-642.
[4]杨和振,李华军,黄维平,等.环境激励下海洋平台结构的模态参数识别[C]//第八届全国振动理论及应用学术会议,上海,2003:467-474.Yang Hezhen,Li Huajun,Huang Weiping,et al.I-dentification of modal parameters of offshore platform structure under environmental excitation[C]//The Eighth National Symposium on the Theory and Application of Vibration,Shanghai,2003:467-474.
[5]杨和振.环境激励下海洋平台结构模态参数识别与损伤诊断研究[D].青岛:中国海洋大学,2004.Yang Hezhen.Research on modal parameter identification and damage diagnosis of offshore platform structure under environment excitation[D].Qingdao:Chinese Marine University,2004.
[6]欧进萍,段忠东,肖仪清,等.海洋平台结构安全评定:理论、方法与应用[M].北京:科学出版社,2003.Ou Jinping,Duan Zhongdong,Xiao Yiqing,et al.Safety Assessment of Offshore Platform Structure:Theory,Method and Application[M].Beijing:Science Press,2003.
[7]Zaaijer M B.Foundation modelling to assess dynamic behavior of offshore wind turbines[J].Applied Ocean Research,2006,28:45-57.
[8]Tempel J,Vries W,Krolis V,et al.Mangrove findings offshore wind energy in deep waters[C]//Proceedings European Offshore Wind,2007:154-158.
[9]黄维平,刘建军,赵战华.海上风电基础结构研究现状及发展趋势[J].海洋工程,2009,27(2):130-134.Huang Weiping,Liu Jianjun,Zhao Zhanhua.Research status and development trend of offshore wind power infrastructure[J].Oceanographic Engineering,2009,27(2):130-134.
[10]莫继华,何炎平,杨煜,等.近海风电机组单桩式支撑结构载荷和动力响应的研究[J].中国海洋平台,2010,25:17-21.Mo Jihua,He Yanping,Yang Yi,et al.Study on the load and dynamic response of single pile support structure of offshore wind turbines[J].China Offshore Platform,2010,25:17-21.
[11]Zhang Min,Li Huajun,Hu Sau-Lon James.Fundamental structural frequency analysis for jacket-type offshore wind turbine[C]//20th(2010)International Offshore(Ocean)and Polar Engineering Conference,2010:665-671.
[12]李萍.海洋平台结构动力特性参数识别的理论与实验研究[D].青岛:中国海洋大学,2011.Li Ping.Theoretical and experimental study on parameter identification of dynamic characteristics of offshore platform structures[D].Qingdao:Chinese Marine U-niversity,2011.
[13]包兴先.基于模型定阶和信号消噪的海洋平台结构模态参数识别研究[D].青岛:中国海洋大学,2010.Bao Xingxian.Research on modal parameter identification of offshore platform structure based on model order and signal denoising[D].Qingdao:Chinese Marine University,2010.
[14]刘建军.海上风电机组整体桁架式支撑结构动力特性与疲劳研究[D].青岛:中国海洋大学,2010.Liu Jianjun.Study on dynamic characteristics and fatigue of the whole truss type support structure for offshore wind turbines[D].Qingdao:Chinese Marine U-niversity,2010.
[15]陈玉静.环境激励下海上风电结构模态参数识别技术研究[D].青岛:中国海洋大学,2013.Chen Yujing.Research on modal parameter identification of offshore wind power structure under environmental excitation[D].Qingdao:Chinese Marine University,2013.
[2]Yang Hezhen,Li Huajun.Damage localization of offshore platform under ambient excitation[J].China O-cean Engineering,2003,17(4):495-504.
[3]杨和振,李华军,黄维平,等.基于动力响应测试的海洋平台结构损伤诊断[C]//第十二届全国结构工程会议,重庆,2003:636-642.Yang Hezhen,Li Huajun,Huang Weiping,et al.Nondestructive damage detection in offshore platform structure via vibration monitoring[C]//The Twelfth National Conference on Structural Engineering,2003:636-642.
[4]杨和振,李华军,黄维平,等.环境激励下海洋平台结构的模态参数识别[C]//第八届全国振动理论及应用学术会议,上海,2003:467-474.Yang Hezhen,Li Huajun,Huang Weiping,et al.I-dentification of modal parameters of offshore platform structure under environmental excitation[C]//The Eighth National Symposium on the Theory and Application of Vibration,Shanghai,2003:467-474.
[5]杨和振.环境激励下海洋平台结构模态参数识别与损伤诊断研究[D].青岛:中国海洋大学,2004.Yang Hezhen.Research on modal parameter identification and damage diagnosis of offshore platform structure under environment excitation[D].Qingdao:Chinese Marine University,2004.
[6]欧进萍,段忠东,肖仪清,等.海洋平台结构安全评定:理论、方法与应用[M].北京:科学出版社,2003.Ou Jinping,Duan Zhongdong,Xiao Yiqing,et al.Safety Assessment of Offshore Platform Structure:Theory,Method and Application[M].Beijing:Science Press,2003.
[7]Zaaijer M B.Foundation modelling to assess dynamic behavior of offshore wind turbines[J].Applied Ocean Research,2006,28:45-57.
[8]Tempel J,Vries W,Krolis V,et al.Mangrove findings offshore wind energy in deep waters[C]//Proceedings European Offshore Wind,2007:154-158.
[9]黄维平,刘建军,赵战华.海上风电基础结构研究现状及发展趋势[J].海洋工程,2009,27(2):130-134.Huang Weiping,Liu Jianjun,Zhao Zhanhua.Research status and development trend of offshore wind power infrastructure[J].Oceanographic Engineering,2009,27(2):130-134.
[10]莫继华,何炎平,杨煜,等.近海风电机组单桩式支撑结构载荷和动力响应的研究[J].中国海洋平台,2010,25:17-21.Mo Jihua,He Yanping,Yang Yi,et al.Study on the load and dynamic response of single pile support structure of offshore wind turbines[J].China Offshore Platform,2010,25:17-21.
[11]Zhang Min,Li Huajun,Hu Sau-Lon James.Fundamental structural frequency analysis for jacket-type offshore wind turbine[C]//20th(2010)International Offshore(Ocean)and Polar Engineering Conference,2010:665-671.
[12]李萍.海洋平台结构动力特性参数识别的理论与实验研究[D].青岛:中国海洋大学,2011.Li Ping.Theoretical and experimental study on parameter identification of dynamic characteristics of offshore platform structures[D].Qingdao:Chinese Marine U-niversity,2011.
[13]包兴先.基于模型定阶和信号消噪的海洋平台结构模态参数识别研究[D].青岛:中国海洋大学,2010.Bao Xingxian.Research on modal parameter identification of offshore platform structure based on model order and signal denoising[D].Qingdao:Chinese Marine University,2010.
[14]刘建军.海上风电机组整体桁架式支撑结构动力特性与疲劳研究[D].青岛:中国海洋大学,2010.Liu Jianjun.Study on dynamic characteristics and fatigue of the whole truss type support structure for offshore wind turbines[D].Qingdao:Chinese Marine U-niversity,2010.
[15]陈玉静.环境激励下海上风电结构模态参数识别技术研究[D].青岛:中国海洋大学,2013.Chen Yujing.Research on modal parameter identification of offshore wind power structure under environmental excitation[D].Qingdao:Chinese Marine University,2013.