F.E.M. Analysis of Mobile Arctic Caisson Island With Stochastic Material Properties

by Terry K. Hoddinott, Memorial Univ of Newfoundland, Faculty of Engineering & Applied, Science, St. John's, Newfoundl, Canada,
Arisi S. J. Swamidas, Memorial Univ of Newfoundland, Faculty of Engineering & Applied, Science, St. John's, Newfoundl, Canada,
Katna Munaswamy, Memorial Univ of Newfoundland, Faculty of Engineering & Applied, Science, St. John's, Newfoundl, Canada,
Madasamy Arockiasamy, Memorial Univ of Newfoundland, Faculty of Engineering & Applied, Science, St. John's, Newfoundl, Canada,



Document Type: Proceeding Paper

Part of: Cold Regions Engineering

Abstract: The paper examines how soil uncertainty influences the short term settlements and stresses of the Mobile Arctic Caisson on the original sea bed. Utilizing a two-dimensional plane strain triangular element (FEM) model, a linear elastic soil model has been investigated. The soil uncertainty can be expressed by elastic modulus variation using a compatible stochastic finite element solution which is formulated considering the first two terms in the Taylor series expansion of the equilibrium equations. The mean, standard deviation and coefficient of variation (COV) of the short term displacements and stresses are obtained. Sensitivity of the procedure to elastic modulus COV, correlation distance, and upper-bound/random stochastic analysis is examined.

Subject Headings: Material properties | Stochastic processes | Caissons | Finite element method | Elastic analysis | Islands | Soil modulus | Soil stress | Two-dimensional models | Soil settlement | Arctic

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