Application of statistics to CPT-based parameter selection

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionProfessional

Abstract

The derivation of representative values for geotechnical parameters accounts for the various sources of uncertainty which are addressed at different stages of the determination process. A comprehensive flow chart for the determination of constitutive model parameters from site tests is proposed. The authors first consider a straightforward methodology to quantify the inherent uncertainty of variables measured from a CPT. An automated framework is then applied to merge outcomes from several transformation functions into a single combined output. This result can be subsequently updated with expert judgment or with direct measurements from laboratory tests using a Bayesian approach. When applied to the friction angle, a reduction of the posterior updated representative standard deviation is observed.
Original languageEnglish
Title of host publication20th International Conference on Soil Mechanics and Geotechnical Engineering
Subtitle of host publicationa geotechnical discovery downunder
Place of PublicationSydney
Number of pages6
Publication statusAccepted/In press - 2022

Keywords

  • Automated parameter determination (APD)
  • Graph theory
  • Cone penetration test (CPT)
  • Spatial variation
  • Bayesian updating

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