Shear wave velocity estimation method based on standard penetration test

The invention discloses a shear wave velocity estimation method based on a standard penetration test. The method applies grey relational analysis and takes account the influence of a soil layer effective upper overbarden pressure sigma'v and void ratio e; a relationship expression of a standard penetration value N, the soil layer effective upper overbarden pressure sigma'v, a void ratio e value and shear wave velocity is established by a function fitting method, and thereby the shear wave velocity is estimated. The method can be used for conveniently measuring and calculating the shear wave velocity on the basis of a conventional standard penetration test and has high measuring accuracy. 本发明公开了一种基于标准贯入试验的剪切波速估算方法，该方法运用灰色关联度分析，考虑到土层有效上覆土压力σ′及孔隙比e的影响，通过函数拟合方法，建立标准贯入值N、土层有效上覆土压力σ′、孔隙比e值与剪切波速的关系式，由此来估算剪切波速。该方法基于常规的标准贯入试验，能够较为便捷地测算到剪切波速，且测量精确度较高。