【摘要】 土层剪切波速是土层动力特性和场地类别评判以及结构抗震所需要的重要参数。很多地区基于已有统计资料,取得了剪切波速与深度之间及标准贯入值之间的统计关系。但标准贯入值、钻孔深度对剪切波速估值的具体影响程度和主次关系如何仍未知。该文尝试引入系统的理论方法—灰色关联分析方法分析钻孔深度、标准贯入值对剪切波速影响的主次关系,得出土层标贯击数与相应土层剪切波速之间具有很好的关联性,而土层深度对剪切波速影响的关联度一般,应该用土层标贯数据进行剪切波速估值公式拟合的结论。更多还原

【Abstract】 The soil layer shear wave velocity is the important parameter of dynamic characteristic of soil layer and evaluation for site classification.Also it is the key parameter of structural anti-seismic design.According to the existing statistical data,some areas have obtained the statistical relations between shear wave velocity,the borehole depth and blow counts of SPT.How the blow counts of SPT and borehole depth affecting the estimate value of shear wave velocity concretely and what is the major and minor relationship are still unknown.This article tries to analyze the influential primary and secondary relations of borehole depth,the blow counts of SPT to shear wave velocity by grey correlation analysis method,so it obtains that blow counts of SPT of soil layer has good relevance to corresponding shear wave velocity,but the soil layer depth hasn′t good relationship with shear wave velocity.The conclusion shows that we could use the fitting of the estimation formula of shear wave velocity with blow counts of SPT of soil layer.更多还原