Multivariate Correlations Among SCPTU Parameters of Jiangsu Cohesionless Soils
Estimation of Vs from other testing indices has gained increasing interest over the decades. The enhanced seismic piezocone penetration testing (SCPTU) provides a convenient method to measure Vs simultaneously with other three indices including the cone tip resistance, sleeve frictional resistance and pore water pressure in a close proximity. In this study, a database containing 612 sets of data points is compiled for the stress-normalized SCPTU parameters of the Jiangsu cohesionless soils. An approach based on the multivariate distribution method is utilized to develop the multivariate correlations among the normalized shear wave velocity (Vs1) and other three indices. It is shown that the correlations are reliable to describe the dependence of the Vs1 on other three indices for the Jiangsu cohesionless soils. However, caution shall be taken when these correlations are applied in other soils.
KeywordsMultivariate correlation Shear wave velocity Piezocone penetration test Cohesionless soil
Majority of the work presented in this paper was funded by the National Key Research and Development Program of China (Grant No. 2016YFC0800201), the National Natural Science Foundation of China (Grant No. 41672294) and the Foundation of Jiangsu Province Outstanding Youth (Grant No. BK20140027). These financial supports are gratefully acknowledged.
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