锚杆锚固质量的定量分析方法
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摘要
提出一种用于评价锚杆锚固质量的定量分析方法。基于小波分析和人工神经网络建立了用于识别锚杆杆侧刚度系数的神经网络模型,利用样本对所建立的神经网络进行训练,为锚杆系统的锚固质量评价提供了一个有效的智能化的手段;通过对不同围岩下完整锚杆的数值模拟结果进行动力参数识别,得到了完整锚杆杆侧刚度系数与围岩弹性模量的关系曲线及相应的二次拟合公式,以此可作为锚杆锚固质量的衡量基准;提出了用于描述锚杆锚固状态的锚杆锚固度概念,建立了锚杆锚固质量定量分析方法并进行了工程应用。
A method is developed to quantitatively assess the quality of anchors.An analytical model is combined with the wavelet analysis and artificial neural network is used to estimate the values of bolt-side stiffness coefficients for the anchor system.The samples of bolt's anchorage system are fed into the artificial neural network for training.It's a useable intelligent mean to assess the quality of bolt's anchor system.The dynamic parameters of integrity bolt with different physical and mechanical parameters of surrounding rocks are acquired.A relationship curve between bolt-side stiffness and surrounding rock's modulus of deformation is erected,and its quadratic fitting formula is acquired.The curve and the formula can be used as the assessment standards for the anchor quality.The anchor degree is used to judge the anchor quality.The quantitative assessment method is applied to the engineering field.
A method is developed to quantitatively assess the quality of anchors.An analytical model is combined with the wavelet analysis and artificial neural network is used to estimate the values of bolt-side stiffness coefficients for the anchor system.The samples of bolt's anchorage system are fed into the artificial neural network for training.It's a useable intelligent mean to assess the quality of bolt's anchor system.The dynamic parameters of integrity bolt with different physical and mechanical parameters of surrounding rocks are acquired.A relationship curve between bolt-side stiffness and surrounding rock's modulus of deformation is erected,and its quadratic fitting formula is acquired.The curve and the formula can be used as the assessment standards for the anchor quality.The anchor degree is used to judge the anchor quality.The quantitative assessment method is applied to the engineering field.
引文
[1]TADOLINI S C.Evaluation of ultrasonic measurementsystems for bolt load exterminations[R].The USBureau of Mines,Denver,CO,1990.
[2]ADOLINI S C,DYNI R C.Transfer mechanics of full-column resin-grouted roof bolts[R].The US Bureau ofMines,Denver,CO,1990.
[3]INGNER S P.Field verification of load-transfermechanics of fully grouted roof bolts[R].The USBureau of Mines,Denver,CO,1990.
[4]PAVLAKOVIC B N,LOWE M J S,CAWLY P.High-frequency low-loss ultrasonic modes in imbeddedbars[J].Journal of Applied Mechanics,2001,68(1):67-75.
[5]BEARD M D,LOWE M J S,CAWLEY P.Developmentof a guided wave inspection technique for rock bolts[J].Insight,2002,44(1):19-24.
[6]ZHANG C S,ZOU D H,MADENGA V.Numericalsimulation of wave propagation in grouted rock boltsand the effects of mesh density and wave frequency[J].International Journal of Rock Mechanics&MiningSciences,2006,43(4):634-639.
[7]MADENGA V,ZOU D H,ZHANG C S.Effects ofcuring time and frequency on ultrasonic wave velocity ingrouted rock bolts[J].Journal of Applied Geophysics,2006,59(1):79-87.
[8]ZOU D H,CUI Y,MADENGA V,et al.Effects offrequency and grouted length on the behavior of guidedultrasonic waves in rock bolts[J].International Journalof Rock Mechanics&Mining Sciences,2007,44(6):813-819.
[9]张永兴,许明.岩土锚固系统质量智能诊断理论与应用[M].北京:中国建筑工业出版社,2002.
[10]许明,张永兴,阴可.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):755-758.XU MING,ZHANG YONG-XING,YIN KE.Prediction of limit bearing capacity of bolt by neuralnetwork[J].Chinese Journal of Rock Mechanics andEngineering,2002,2l(5):755-758.
[11]许明,张永兴.锚固系统的质量管理与检测技术研究[J].重庆建筑大学学报,2002,24(1):29-33.XU MING,ZHANG YONG-XING.Study on qualitymanagement and inspection technology of anchoragesystem[J].Journal of Chongqing Jianzhu University,2002,24(1):29-33.
[12]许明,张永兴.锚杆低应变动测的数值研究[J].岩石力学与工程学报,2003,22(9):1 538-1 541.XU MING,ZHANG YONG-XING.Numerical studyof low strain dynamic test for bolt[J].Chinese Journalof Rock Mechanics and Engineering,2003,22(9):1538-1541.
[13]许明,张永兴,阴可.某隧道锚杆完整性的无损检测方法[J].土木工程学报,2004,37(5):78-80.XU MING,ZHANG YONG-XING,YIN KE.Studyon nondestructive detection of bolts integrality in atunnel,2004,37(5):78-80.
[14]陈建功,张永兴,李英民.完整锚杆低应变动力响应问题的半解析解及分析[J].世界地震工程,2004,20(3):56-61.CHEN JIAN-GONG,ZHANG YONG-XING,LIYING-MING.Semi-analytical solution to small straindynamic response of integrate anchor bar and itsanalysis[J].World Earthquake Engineering,2004,20(3):56-61.
[15]张永兴,陈建功.缺陷锚杆振动问题的数学模型及其求解[J].地下空间与工程学报.2005,1(1):62-66.ZHANG YONG-XING,CHEN JIAN-GONG.Modelfor longitudinal vibration of defective anchor bar and itssolution[J].Chinese Journal of Underground Space andEngineering,2005,1(1):62-66.
[16]陈建功,张永兴.锚杆系统低应变动力响应的数值模拟分析[J].岩土力学,2007,28(supl):730-736.CHEN JIAN-GONG,ZHANG YONG-XING.Numericalanalysis on low strain dynamic response of anchoragebolt system[J].Rock and Soil Mechanics,2007,28(supl):730-736.
[17]陈建功,张永兴.一种确定锚杆系统损伤位置的小波分析方法[J].煤炭学报,2008,33(4):391-394.CHEN JIAN-GONG,ZHANG YONG-XING.A waveletmethod to fix the defect position of anchorage system[J].Journal of China Coal Society,2008,33(4):391-394.
[18]陈建功,张永兴.锚杆系统动测信号的特征分析[J].岩土工程学报,2008,30(7):1051-1057.CHEN JIAN-GONG,ZHANG YONG-XING.Analysis of dynamic signal characteristics for boltanchorage system[J].Chinese Journal of GeotechnicalEngineering,2008,30(7):1051-1057.
[19]孙均,黄伟.岩石力学参数弹塑性反演问题的优化方法[J].岩石力学与工程学报,1992,11(3):221-229.SUN JUN,HUANG WEI.An optimization method forthe elastoplastic inversion of parameters in rockmechanics[J].Chinese Journal of Rock Mechanics andEngineering,1992,11(3):221-229.
[2]ADOLINI S C,DYNI R C.Transfer mechanics of full-column resin-grouted roof bolts[R].The US Bureau ofMines,Denver,CO,1990.
[3]INGNER S P.Field verification of load-transfermechanics of fully grouted roof bolts[R].The USBureau of Mines,Denver,CO,1990.
[4]PAVLAKOVIC B N,LOWE M J S,CAWLY P.High-frequency low-loss ultrasonic modes in imbeddedbars[J].Journal of Applied Mechanics,2001,68(1):67-75.
[5]BEARD M D,LOWE M J S,CAWLEY P.Developmentof a guided wave inspection technique for rock bolts[J].Insight,2002,44(1):19-24.
[6]ZHANG C S,ZOU D H,MADENGA V.Numericalsimulation of wave propagation in grouted rock boltsand the effects of mesh density and wave frequency[J].International Journal of Rock Mechanics&MiningSciences,2006,43(4):634-639.
[7]MADENGA V,ZOU D H,ZHANG C S.Effects ofcuring time and frequency on ultrasonic wave velocity ingrouted rock bolts[J].Journal of Applied Geophysics,2006,59(1):79-87.
[8]ZOU D H,CUI Y,MADENGA V,et al.Effects offrequency and grouted length on the behavior of guidedultrasonic waves in rock bolts[J].International Journalof Rock Mechanics&Mining Sciences,2007,44(6):813-819.
[9]张永兴,许明.岩土锚固系统质量智能诊断理论与应用[M].北京:中国建筑工业出版社,2002.
[10]许明,张永兴,阴可.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):755-758.XU MING,ZHANG YONG-XING,YIN KE.Prediction of limit bearing capacity of bolt by neuralnetwork[J].Chinese Journal of Rock Mechanics andEngineering,2002,2l(5):755-758.
[11]许明,张永兴.锚固系统的质量管理与检测技术研究[J].重庆建筑大学学报,2002,24(1):29-33.XU MING,ZHANG YONG-XING.Study on qualitymanagement and inspection technology of anchoragesystem[J].Journal of Chongqing Jianzhu University,2002,24(1):29-33.
[12]许明,张永兴.锚杆低应变动测的数值研究[J].岩石力学与工程学报,2003,22(9):1 538-1 541.XU MING,ZHANG YONG-XING.Numerical studyof low strain dynamic test for bolt[J].Chinese Journalof Rock Mechanics and Engineering,2003,22(9):1538-1541.
[13]许明,张永兴,阴可.某隧道锚杆完整性的无损检测方法[J].土木工程学报,2004,37(5):78-80.XU MING,ZHANG YONG-XING,YIN KE.Studyon nondestructive detection of bolts integrality in atunnel,2004,37(5):78-80.
[14]陈建功,张永兴,李英民.完整锚杆低应变动力响应问题的半解析解及分析[J].世界地震工程,2004,20(3):56-61.CHEN JIAN-GONG,ZHANG YONG-XING,LIYING-MING.Semi-analytical solution to small straindynamic response of integrate anchor bar and itsanalysis[J].World Earthquake Engineering,2004,20(3):56-61.
[15]张永兴,陈建功.缺陷锚杆振动问题的数学模型及其求解[J].地下空间与工程学报.2005,1(1):62-66.ZHANG YONG-XING,CHEN JIAN-GONG.Modelfor longitudinal vibration of defective anchor bar and itssolution[J].Chinese Journal of Underground Space andEngineering,2005,1(1):62-66.
[16]陈建功,张永兴.锚杆系统低应变动力响应的数值模拟分析[J].岩土力学,2007,28(supl):730-736.CHEN JIAN-GONG,ZHANG YONG-XING.Numericalanalysis on low strain dynamic response of anchoragebolt system[J].Rock and Soil Mechanics,2007,28(supl):730-736.
[17]陈建功,张永兴.一种确定锚杆系统损伤位置的小波分析方法[J].煤炭学报,2008,33(4):391-394.CHEN JIAN-GONG,ZHANG YONG-XING.A waveletmethod to fix the defect position of anchorage system[J].Journal of China Coal Society,2008,33(4):391-394.
[18]陈建功,张永兴.锚杆系统动测信号的特征分析[J].岩土工程学报,2008,30(7):1051-1057.CHEN JIAN-GONG,ZHANG YONG-XING.Analysis of dynamic signal characteristics for boltanchorage system[J].Chinese Journal of GeotechnicalEngineering,2008,30(7):1051-1057.
[19]孙均,黄伟.岩石力学参数弹塑性反演问题的优化方法[J].岩石力学与工程学报,1992,11(3):221-229.SUN JUN,HUANG WEI.An optimization method forthe elastoplastic inversion of parameters in rockmechanics[J].Chinese Journal of Rock Mechanics andEngineering,1992,11(3):221-229.