小波分析在旁孔透射波测桩法中的应用
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摘要
常规无损检测方法无法检测既有建筑物下基桩桩身长度,而旁孔透射波法凭借其优势,可以在不直接接触桩顶的情况下检测基桩桩身长度。但该方法的推广受到桩周土和震源的限制,从而影响异常判别。文中根据实测数据证明,小波分析的应用能够提高解释精度,使该方法的适用性更强,且基于Matlab的小波分析容易实现,编程简单。
Conventional non-destructive testing methods can not detect the length of pile under existing building.Parallel seismic method,with its advantages,can detect the length of pile,not directly contact the top of the pile.However,the method of promotion is restricted by the soil around the pile and wave source,and that makes more difficult to identify abnormal.According to the paper,the measured data show that the application of wavelet analysis can improve the accuracy of interpretation and the method can enhance the applicability.The wavelet analysis based on matlab is easy to achieve and is simple to program.
Conventional non-destructive testing methods can not detect the length of pile under existing building.Parallel seismic method,with its advantages,can detect the length of pile,not directly contact the top of the pile.However,the method of promotion is restricted by the soil around the pile and wave source,and that makes more difficult to identify abnormal.According to the paper,the measured data show that the application of wavelet analysis can improve the accuracy of interpretation and the method can enhance the applicability.The wavelet analysis based on matlab is easy to achieve and is simple to program.
引文
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[8]苏金明,王永利.Matlab 7.0实用指南[M].北京:电子工业出版社,2004.
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[10]飞思科技产品研发中心.小波分析理论与Mtalab 7实现[M].北京:电子工业出版社,2005.
[11]杨晓楠,唐和生,陈镕,等.钢结构损伤识别中Db族小波函数选择[J].同济大学学报(自然科学版),2006,34(12):1568~1572.
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[2]陈凡.基桩质量检测技术[M].北京:中国建筑工业出版社,2003.
[3]JGJ 106-2003,建筑基桩检测技术规范[S].北京:中国建筑工业出版社,2003.
[4]Olson L D,Liu M,Aouad M F.Borehole NDTTechniques for Unknown Subsurface Bridge Founda-tion Testing[J].SPIE,1996,2946(10):10~16.
[5]丁华,蔡香平.地球物理测井技术在基桩检测中的应用[J].工程地球物理学报,2007,4(5):400~404.
[6]汤建新,黄大治.旁孔透射波法检测水泥搅拌桩质量的研究[J].中国市政工程,2006,6(12):83~85.
[7]黄大治,陈龙珠.旁孔透射波法检测水泥搅拌桩的三维有限元分析[J].上海交通大学学报,2007,41(6):960~964.
[8]苏金明,王永利.Matlab 7.0实用指南[M].北京:电子工业出版社,2004.
[9]李南南,吴清,曹辉林.Matlab 7简明教程[M].北京:清华大学出版社,2006.
[10]飞思科技产品研发中心.小波分析理论与Mtalab 7实现[M].北京:电子工业出版社,2005.
[11]杨晓楠,唐和生,陈镕,等.钢结构损伤识别中Db族小波函数选择[J].同济大学学报(自然科学版),2006,34(12):1568~1572.
[12]柳建新,韩世礼,马捷.小波分析在地震资料去噪中的应用[J].地球物理学进展,2006,21(2):541~545.
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