Geo-Congress 2020
A Consistent Correlation between Vs, SPT, and CPT Metrics for Use in Liquefaction Evaluation Procedures
Publication: Geo-Congress 2020: Geotechnical Earthquake Engineering and Special Topics (GSP 318)
ABSTRACT
The objective of this study is to develop a consistent relationship between small strain shear wave velocity (Vs), corrected cone penetration test (CPT) tip resistance (qc1Ncs), and corrected standard penetration test (SPT) blow count (N1,60cs) for liquefiable soils. In the absence of actual measurements of Vs in the field, it is common to use data from SPT or CPT testing to estimate Vs. However, empirical correlations between pairs of these in situ metrics can yield significantly different values of Vs. Using recent correlations between cyclic resistance ratio normalized to M7.5 (CRRM7.5) and Vs normalized to one atmosphere of overburden (Vs1), qc1Ncs, or N1,60cs, a consistent relationship is developed such that reasonably similar values of Vs can be obtained using either qc1Ncs or N1,60cs. In comparison to two published Vs correlations, the correlations given in this study provide an average Vs value when using N1,60cs as the dependent variable but a slightly lower prediction of Vs when using qc1Ncs as the dependent variable.
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ACKNOWLEDGEMENTS
This study is based on work supported in part by the National Science Foundation (NSF) grants CMMI-1030564, CMMI-1435494, CMMI-1724575, and CMMI-1825189. The authors gratefully acknowledge this support. However, any opinions, findings, and conclusions expressed in this paper are those of the authors and do not necessarily reflect the views of the NSF.
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Information & Authors
Information
Published In
Geo-Congress 2020: Geotechnical Earthquake Engineering and Special Topics (GSP 318)
Pages: 132 - 140
Editors: James P. Hambleton, Ph.D., Northwestern University, Roman Makhnenko, Ph.D., University of Illinois at Urbana-Champaign, and Aaron S. Budge, Ph.D., Minnesota State University, Mankato
ISBN (Online): 978-0-7844-8281-0
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: Feb 21, 2020
ASCE Technical Topics:
- Continuum mechanics
- Correlation
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Field tests
- Fluid mechanics
- Geomechanics
- Geotechnical engineering
- Geotechnical investigation
- Hydrologic engineering
- Mathematics
- Measurement (by type)
- Metric systems
- Penetration tests
- Seismic waves
- Shear resistance
- Shear waves
- Soil dynamics
- Soil liquefaction
- Soil mechanics
- Soil properties
- Solid mechanics
- Statistics
- Tests (by type)
- Viscosity
- Water and water resources
- Waves (mechanics)
Authors
Metrics & Citations
Metrics
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