Lateral Analysis of Drilled Piers Incorporating Soil Variability

by Gary J. Oakley, J. Oakley Jr. & Associates, United States,
Eric C. Drumm, J. Oakley Jr. & Associates, United States,
Richard M. Bennett, J. Oakley Jr. & Associates, United States,

Document Type: Proceeding Paper

Part of: Probabilistic Methods in Civil Engineering


In probabilistic studies, the mean or expected value of the parameter in question, along with its measured dispersion or standard deviation, are determined. In this study the Three Point Approximation (3PA) is used to find these probabilistic parameters. The 3PA is a probability method which models the continuous probability density function by three discrete points. In this study the 3PA was applied to a one-dimensional finite element code. The code models the soil response by using a generalized Ramberg-Osgood model. The response of the pier is assumed to be linear, while the soil response is nonlinear. The program generates the mean and standard deviation of pier deflections, element shears and bending moments, and soil reactions.

Subject Headings: Soil analysis | Piers | Drilling | Probability | Parameters (statistics) | Approximation methods | Standards and codes | Caissons

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