UNCERTAINTY ABOUT P-Y CURVES FOR PILES IN SOFT CLAYS

Criteria for estimating the first two probabilistic moments of the normalized parameters of p-y curves are presented. These parameters are the ultimate soil resistance and the initial tangent value of the soil reaction which are both normalized with respect to the values predicted by an adequate mathematical expression. Due to the scarcity of data a sequential Bayesian formulation of statistical inference is adopted which deals with engineering judgment; small scale models of piles under lateral loads, as well as full scale specimens and indirect information is contained in load-deflection curves measured at the heads of laterally loaded piles. When assessing the possible deviations of the normalized variables, attention is given to: uncertainty attached to the prediction formula of the p-y curves; influence of uncertainty in basic soil properties; and discrepancies among results from small scale models and field tests. Mean and variance values of the normalized parameters of p-y curves corresponding to soft and medium saturated clays are obtained for a particular case.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339410
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Ruiz, S E
• Publication Date: 1986-6

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 594-607
• Serial:
  • Journal of Geotechnical Engineering
  • Volume: 112
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9410

Subject/Index Terms

• TRT Terms: Bayes' theorem; Engineering moments; Loads; Probability; Soft clays; Support piles; Uncertainty; Variance
• Uncontrolled Terms: P-Y curves; Probabilistic analysis; Soil resistivity
• Old TRIS Terms: Moments; Pile lateral loads
• Subject Areas: Data and Information Technology; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00459431
• Record Type: Publication
• Report/Paper Numbers: ASCE Paper 20651
• Files: TRIS
• Created Date: Oct 31 1986 12:00AM