摘要
本文应用τ -p变换提取面波 ,获取高信噪比的频散曲线 ;采用等厚薄层权重自适应迭代阻尼最小二乘法自动反演横波速度 ,提高横波速度的计算精度 ,进而映射二维压实度剖面。用上述方法对商开高速公路振冲压碾效果进行了无损检测 ,其结果与取样分析及开挖验证一致。
Rayleigh wave is extracted by τ p transformation to obtain dispersion curves with high signal to noise ratio.Shear velocity is inverted by using the least square method of self adaptively iterative damping to improve the calculating accuracy of the velocity and project the profile of 2 D compactness.The results of non destructive inspection for the compacting effect in the Shang Kai expressway by the said method accord with those of sampling analysis and excaviation inspection.
出处
《工程勘察》
CSCD
北大核心
2003年第4期62-64,共3页
Geotechnical Investigation & Surveying
基金
"九.五"国家重点科技攻关项目 (No. 96 2 2 1 0 1 0 2 0 5)
长江水利委员会综合勘测局科技发展基金资助项目 (No .KY2 0 0 0 4 )
