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The nonlinear subgrade reaction method (P-y curves) is widely used for the design of laterally loaded piles. This method replaces the soil reaction with a series of independent nonlinear Winkler springs.
A preliminary semi-empirical approach for the determination of P-y curves using data obtained from a flat dilatometer test (DMT) is presented and evaluated. A brief description of the equipment, testing procedures, and the theory that enables the family of P-y curves to be determined are presented. The P-y curves are used as input for an existing finite-difference program, which calculates pile deflection versus depth at various lateral loads.
An evaluation of the proposed method is presented using data from three full-scale laterally loaded test piles. A comparison and discussion are provided between the predicted and measured behavior of the piles during lateral loading.
Professor, University of Alberta, Edmonton, Alberta
Geotechnical engineer, Geopacific Consultants Ltd., Burnaby, British Columbia
Professor, University of British Columbia, Vancouver, British Columbia
Stock #: GTJ10671J