Skin Friction Distrtibutions on Piles in Sand

by Nazrul I. Khan, Pepe Engineering, Houston, United States,
John S. Templeton, III, Pepe Engineering, Houston, United States,
Michael W. O'Neill, Pepe Engineering, Houston, United States,



Document Type: Proceeding Paper

Part of: Civil Engineering in the Oceans V

Abstract: Presented in this paper are early results from an analytical investigation of the performance of a closed-ended pipe pile under monotonic axial loading in dense sand. The study was performed using elastic-plastic sand behavior. The plastic behavior of the sand was defined by an extended Drucker-Prager model incorporating non-associated flow with independent specifications for internal friction and dilatancy. Numerical solution of the model was obtained via an axisymmetric analysis using a general purpose nonlinear finite element program. The most significant results discussed here involve the shape of the skin friction distributions along the shaft of the pile. The shape of the skin friction distributions was found to depend upon settlement.

Subject Headings: Axial loads | Soil analysis | Finite element method | Nonlinear finite element analysis | Skin friction | Soil settlement | Pipe piles | Soil-pipe interaction

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