Please use this identifier to cite or link to this item: https://doi.org/10.1139/cgj-2013-0002
Title: Multivariate distribution for undrained shear strengths under various test procedures
Authors: Ching, J.
Phoon, K.-K. 
Keywords: Correlation
Multivariate distribution
Site investigation
Uncertainty
Undrained shear strength
Issue Date: Sep-2013
Citation: Ching, J., Phoon, K.-K. (2013-09). Multivariate distribution for undrained shear strengths under various test procedures. Canadian Geotechnical Journal 50 (9) : 907-923. ScholarBank@NUS Repository. https://doi.org/10.1139/cgj-2013-0002
Abstract: The undrained shear strength (su) of a clay is not a constant. In particular, su values of a clay evaluated by different test procedures are different because these tests may have different stress states, stress histories, degrees of sampling disturbance, and strain rates. This study constructs the multivariate probability distribution of su from various test procedures based on a large clay database. This multivariate distribution provides an estimation of the normalized undrained shear strength based on four factors: test mode, overconsolidation ratio, strain rate, and plasticity. Once this multivariate distribution is constructed, interesting questions can be answered systematically using simple Bayesian analysis, e.g., given the su value for one test procedure, what is the updated mean and coefficient of variation of the su value for another test procedure?
Source Title: Canadian Geotechnical Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/91089
ISSN: 00083674
DOI: 10.1139/cgj-2013-0002
Appears in Collections:Staff Publications

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