多参数综合分析法在桩基超声波检测中的应用
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摘要
通过对超声波检测方法的理论探讨,结合工程实例,利用声波曲线判定桩身混凝土质量及缺陷的可疑位置,采用超声波的声时、声幅和PSD判据多参数综合分析法,判断基桩的桩身质量,克服了单一参数易造成误判的缺点,提高了桩身质量评价的准确性。实践证明:采用跨孔超声波法检测混凝土灌注桩桩身质量,其结果直观可靠,为桩身混凝土质量提供了一种有效的检测方法。
Through theoretical discussion of the ultrasonic testing method and combining the engineering case,the quality of pile body concrete and the possible positions of pile defects are detected by ultrasonic curve.The sonic time and sonic amplitude of the ultrasonic wave and multi-parameter synthetic analysis method of PSD criterion to examine the quality of pile body,overcomes the defects of the single parameter method which enables erroneous result.This method enhances the precision of the assessment of the quality of pile body.Practice shows that the cross-hole ultrasonic method for quality inspection of cast-in-place concrete pile can give visual and reliable results.Thus,it is an effective inspection method for the quality of pile body concrete.
Through theoretical discussion of the ultrasonic testing method and combining the engineering case,the quality of pile body concrete and the possible positions of pile defects are detected by ultrasonic curve.The sonic time and sonic amplitude of the ultrasonic wave and multi-parameter synthetic analysis method of PSD criterion to examine the quality of pile body,overcomes the defects of the single parameter method which enables erroneous result.This method enhances the precision of the assessment of the quality of pile body.Practice shows that the cross-hole ultrasonic method for quality inspection of cast-in-place concrete pile can give visual and reliable results.Thus,it is an effective inspection method for the quality of pile body concrete.
引文
[1]史佩东,等.实用桩基工程手册[M].北京:中国建筑工业出版社,1999:23-25.
[2]Selleck S F,Landis E N,Peterson M.Ultrasonic investigation of concrete with distributed damage[J].ACI MaterJ,1998,95(1):27-36.
[3]Sakata Y,Ohtsy M.Crack evaluation in concrete members based on ultrasonic spectroscopy[J].ACI MaterJ,1995,92(6):686-699.
[4]黄英杰.超声波透射法在桩身质量检测中的实践与应用探讨[J].福建地震,2001,17(4):32-35.
[5]邱平,张荣成.新编混凝土无损检测技术[M].北京:中国环境科学出版社,2002:253-276.
[6]吴慧敏.结构混凝土现场检测新技术——混凝土非破损检测[M].长沙:湖南大学出版社,1998:150-168.
[7]陈久久.超声波透射波数据信息处理[D].长沙:中南大学,2005:17-25
[8]Fleszynski,Janusz,Ranachowski,Przemyslaw.Non-destructive ul-trasonic measurements of ceramic post insulators used in electricity distribution systems.Insight[A].Non-Destructive Testing and Condition Monitoring.London:British Institute of Non-Destructive Testing,2003,45(7):493-497.
[9]Torigoe Ippei,Mori Kauya,Spagnoli,Andrea.Signal processing procedure for non-destructive test of concrete structure integrity[A].NDT and E International.Oxford:Elsevier Ltd,2005,38(7):575-581.
[2]Selleck S F,Landis E N,Peterson M.Ultrasonic investigation of concrete with distributed damage[J].ACI MaterJ,1998,95(1):27-36.
[3]Sakata Y,Ohtsy M.Crack evaluation in concrete members based on ultrasonic spectroscopy[J].ACI MaterJ,1995,92(6):686-699.
[4]黄英杰.超声波透射法在桩身质量检测中的实践与应用探讨[J].福建地震,2001,17(4):32-35.
[5]邱平,张荣成.新编混凝土无损检测技术[M].北京:中国环境科学出版社,2002:253-276.
[6]吴慧敏.结构混凝土现场检测新技术——混凝土非破损检测[M].长沙:湖南大学出版社,1998:150-168.
[7]陈久久.超声波透射波数据信息处理[D].长沙:中南大学,2005:17-25
[8]Fleszynski,Janusz,Ranachowski,Przemyslaw.Non-destructive ul-trasonic measurements of ceramic post insulators used in electricity distribution systems.Insight[A].Non-Destructive Testing and Condition Monitoring.London:British Institute of Non-Destructive Testing,2003,45(7):493-497.
[9]Torigoe Ippei,Mori Kauya,Spagnoli,Andrea.Signal processing procedure for non-destructive test of concrete structure integrity[A].NDT and E International.Oxford:Elsevier Ltd,2005,38(7):575-581.
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