摘要
针对现行的基桩完整性检验方法存在的问题 ,在分析了基桩检测中信号与噪声特征的基础上 ,采用非线性小波分析对基桩完整性检测的反射波信号进行降噪处理 ,为基桩完整性诊断提供了一种有效的降噪分析方法。
The reflex wave method is popularly adopted in the integrity test of a pile foundation.The repetitive reflection and disperse noise make difficulty to the integrity analysis of a pile foundation.The reflex wave of a pile foundation is really a time?varying unsteady signal.The non?linear wavelet analysis,proposed by D.L.Donoho,is an effective way for denoising and signal?rebuilding.A method of denoising and signal?rebuilding the reflex wave using non?linear wavelet transform is proposed in the paper for the integrity test.The results of practical test show that the proposed method is feasible and effective.
出处
《土木工程学报》
EI
CSCD
北大核心
2001年第6期105-107,共3页
China Civil Engineering Journal
关键词
小波分析
基桩检测
动态诊断
反射波
wavelet analysis ,pile foundation test,dynamic diagnosis,reflex wave
