Evaluation of P-Y Relationships in Cohesive Soils

by Sal M. Gazioglu, D'Appolonia Consulting Engineers, Inc, Houston, TX, USA,
Michael W. O'Neill, D'Appolonia Consulting Engineers, Inc, Houston, TX, USA,



Document Type: Proceeding Paper

Part of: Analysis and Design of Pile Foundations

Abstract: The practice of analyzing laterally loaded driven and bored piles often requires modeling of soil response in terms of uncoupled, non-linear unit load transfer functions. These functions, called p-y curves, are input into computer codes that use finite difference or finite element representations of beam behavior. This paper considers three semi-empirical procedures for constructing p-y curves: the soft clay method, the stiff clay method and a new method that intergrates relative pile-soil stiffness and soil degradability effects.

Subject Headings: Soil-pile interaction | Soil-structure interaction | Lateral loads | Soft soils | Soil analysis | Load transfer | Bored piles

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