[1]杜思义,宋世波..基桩缺陷定量识别研究[J].郑州大学学报(工学版),2012,33(05):34-38.[doi:10.3969/j.issn.1671-6833.2012.05.008]
　DU Siyi,SONG Shibo.Research on Quantitative Analysis Foundation Pile Defects[J].Journal of Zhengzhou University (Engineering Science),2012,33(05):34-38.[doi:10.3969/j.issn.1671-6833.2012.05.008]
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基桩缺陷定量识别研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
33卷
期数:
2012年05期
页码:
34-38
栏目:
出版日期:
2012-09-10

文章信息/Info

Title:
Research on Quantitative Analysis Foundation Pile Defects
作者:
杜思义; 宋世波.
郑州大学土木工程学院,河南郑州,450001, 郑州大学土木工程学院,河南郑州,450001
Author(s):
DU Siyi; SONG Shibo
School of Civil Engineering,Zhengzhou University,Zhengzhou 450001 ,China
关键词:
基桩;  矩阵摄动;  定量分析;  损伤识别
Keywords:
foundation pile ;  perturbation matrix;  quantitative analysis;  damage identification
分类号:
TU198+.6
DOI:
10.3969/j.issn.1671-6833.2012.05.008
摘要:
针对低应变动测技术不能定量识别基桩缺陷的问题,利用频率摄动理论对基桩进行定量识别.首先定义损伤识别参数,然后将基桩振动理论与矩阵摄动理论相结合推出基桩缺陷定量识别公式,用优化法或筛选法对公式进行求解,得出损伤识别参数,从而可以确定损伤位置和损伤程度.实验室制作5根混凝土模型桩,通过设置不同位置、不同程度的缺陷对该方法进行验证,实验结果表明,该方法既可以识别基桩的缺陷位置又可以识别基桩的缺陷程度.
Abstract:
Low strain reflected wave method can detect the defect location of a pile but can’t detect defect se-verity in integrity testing. Relative to the defect position, defect severity is more important, The frequency perturbation theory is adopted to quantitatively detect the foundation pile defects in this paper. The damage identi.fication parameters were defined at first. Then, the formulae and method of quantifying identification defectswere presented by perturbation matrix and dynamics theories of foundation pile. The damage identification pa.rameter was determined by the optimization method, At last, the aceuracy and feasibility of this method wereverified by model pile experiments, and the experiment results show that the method could accurately detectthe severity of pile defects.

相似文献/References:

[1]杜思义,陈一汉..基桩低应变波速的量值研究[J].郑州大学学报(工学版),2012,33(03):24.[doi:10.3969/j.issn.1671-6833.2012.03.006]
　DU Siyi,CHEN Yihan.Study on Quantity of Wave Speed in Low Strain IntegretyTesting of Foundation Pile[J].Journal of Zhengzhou University (Engineering Science),2012,33(05):24.[doi:10.3969/j.issn.1671-6833.2012.03.006]

更新日期/Last Update: 1900-01-01