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6. NON LINEAR RESPONSE OF FIXED OFFSHORE PLATFORMS TO SEISMIC EXCITATION INCLUDING SOIL-PILE-STRUCTURE INTERACTION.

Author

Zargar, Ehssan, Aghakouchakz, All Akbar, and Aghakouchak, Amin

Subjects
SOIL-structure interaction, EFFECT of earthquakes on hydraulic structures, OFFSHORE structure dynamics, NONLINEAR statistical models, FINITE element method, STRAINS & stresses (Mechanics), DAMPING (Mechanics)
Abstract

The article presents an analysis of the non-linear seismic soil-pile-structure interaction (SSPSI) in fixed offshore platforms built on pile foundations. The pile structure, platform structure and soil media are modeled using a combination of finite element method (FEM) and Beam on Nonlinear Winkler Foundation (BNWF). The authors concluded that the consideration of soil-pile-structure leads to lower stresses in the platforms. The implications of the results of the analysis for the configuration of soil layers and soil material damping ratio are tackled.

Published
2008

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