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3D FE analysis of the installation process of spudcan foundations
Publikationstyp
Conference Paper
Date Issued
2011
Sprache
English
Author(s)
Institut
Start Page
685
End Page
690
Citation
Frontiers in Offshore Geotechnics II - Proceedings of the 2nd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2010 : Perth, Australia, 8 - 10 November 2010 (): 685-690 (2011)
Contribution to Conference
Scopus ID
Publisher
CRC Press, Balkema
The risk of rapid uncontrolled penetration ("punch-through") exposes jack-ups to significant risk during installation in strong over weak layered soils. An example for this is a thin sand layer overlying a weaker stratum of clay. Contact problems and large mesh distortions, which lead to convergence problems in FEsimulations may occur if this problem is simulated using conventional FE-method. In recent years, the Coupled Eulerian-Lagrangian method (CEL) has been used to solve geomechanical boundary value problems involving large deformations. In this paper, three dimensional finite element analyses using the CEL formulation are carried out to simulate the installation process of spudcan foundations. A Lagrangian mesh is used to discretize the spudcan foundation, whereas an Eulerian mesh is used for the subsoil. The clay is modeled as elasto-plastic DRUCKER-PRAGER material and a hypoplastic constitutive law is used to describe the sand. The numerical results are compared with existing analytical solutions and centrifuge model test data. © 2011 Taylor & Francis Group, London.
DDC Class
550: Geowissenschaften
590: Tiere (Zoologie)
620: Ingenieurwissenschaften
690: Hausbau, Bauhandwerk