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Biaxial loading of offshore monopiles: numerical modelling

Sheil, Brian B.
; 
McCabe, Bryan A.
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Identifiers
http://hdl.handle.net/10379/6296
https://doi.org/10.13025/18542
Repository DOI
10.1061/(ASCE)GM.1943-5622.0000709
Publication Date
2016-05-18
Keywords
Civil engineering, Finite element method, Displacement (mechanics), Piles, Offshore structures,, Soil properties, Lateral loads, Model analysis, Biaxial loads
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Article
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Citation
Sheil, B. B., & McCabe, B. A. (2017). Biaxial loading of offshore monopiles: Numerical modeling. International Journal of Geomechanics, 17(2). doi: 10.1061/(ASCE)GM.1943-5622.0000709
Abstract
In this study, finite-element (FE) modeling was used to examine the influence of biaxial lateral loading of a monopile foundation. Two different soil models were adopted to investigate the influence of state-dependent and anisotropic behavior of soil on monopile response. A series of analyses was carried out in which both cyclic and static lateral loads were applied to the pile. Results show that biaxial loading significantly influenced the pile-head load-displacement response in addition to the development of significant accumulated displacements and coexistent soil loosening and densification. Moreover, predictions determined using a state-independent soil model were shown to be significantly nonconservative; these findings have important implications for environmental loading of offshore monopiles.
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Publisher
American Society of Civil Engineers
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Attribution-NonCommercial-NoDerivs 3.0 Ireland
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Civil Engineering (Scholarly Articles)