某隧道锚杆完整性的无损检测方法
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摘要
声波测试技术应用于锚固工程完整性无损检测中 ,其基本原理是采用动力瞬态激振引起锚杆弹性振动 ,通过测定锚杆的振动响应来估计和推断锚杆的完整性。基于小波包分析得到的能量特征向量 ,可以作为锚杆缺陷特征向量进行无损检测。人工神经网络这类非线性动力学系统运用于该灰色系统的质量预测可取得良好效果。
The sonoprobe method has been deployed in non-destructive detection of integrity of anchorage project.The fundament is that dynamic transient excitation causes rock bolt's elastic vibration,and bolt integrity can be estimated or deduced by measuring its vibration response.Based on wavelet packet analysis,energy eigenvector,which is a flaw vector could be regarded as basis in anchors' non-destructive detection.As a non-linear dynamical system,artificial neural networks have been proved efficient in quality detection of gray system.
The sonoprobe method has been deployed in non-destructive detection of integrity of anchorage project.The fundament is that dynamic transient excitation causes rock bolt's elastic vibration,and bolt integrity can be estimated or deduced by measuring its vibration response.Based on wavelet packet analysis,energy eigenvector,which is a flaw vector could be regarded as basis in anchors' non-destructive detection.As a non-linear dynamical system,artificial neural networks have been proved efficient in quality detection of gray system.
引文
[1] ZhangYongxing,XuMing.NumericalAnalysisofQualityIn spectionofAnchorageSystem[J].JournalofChongqingUni versity(EnglishEdition).2002.1(1):42鶫 46
[2] 王靖涛.桩基应力波检测理论及工程应用[M ].北京:地震出版社,1999
[3] 胡昌华,张军波,夏军.基于Matlab的系统分析与设计———小波分析[M ].西安:西安电子科技大学出版社,2000
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[6] 许明,张永兴.锚杆极限承载力的人工神经网络预测[J].岩石力学与工程学报.2002.21(5):755鶫 758
[2] 王靖涛.桩基应力波检测理论及工程应用[M ].北京:地震出版社,1999
[3] 胡昌华,张军波,夏军.基于Matlab的系统分析与设计———小波分析[M ].西安:西安电子科技大学出版社,2000
[4] 崔政权,李宁.边坡工程———理论与实践最新发展[M].北京:中国水利水电出版社,1999
[5] 雷林源.桩基动力学[M ].北京:冶金工业出版社,2000
[6] 许明,张永兴.锚杆极限承载力的人工神经网络预测[J].岩石力学与工程学报.2002.21(5):755鶫 758
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