Modeling the performance of the Molikpaq
A nonlinear, two-dimensional (plane-strain), monotonic and cyclic undrained finite element analysis is carried out to investigate the stability of the Molikpaq offshore structure at the Amauligak I-65 site in the Canadian Beaufort Sea. The stress–strain–strength response of the hydraulically placed...
| Published in: | Canadian Geotechnical Journal |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1994
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/t94-077 http://www.nrcresearchpress.com/doi/pdf/10.1139/t94-077 |
| Summary: | A nonlinear, two-dimensional (plane-strain), monotonic and cyclic undrained finite element analysis is carried out to investigate the stability of the Molikpaq offshore structure at the Amauligak I-65 site in the Canadian Beaufort Sea. The stress–strain–strength response of the hydraulically placed sand is modeled using bounding-surface elastoplastic constitutive relations. The behavior of the sand in the field as well as in the laboratory is simulated by the constitutive relations using a single set of nine parameters. The Molikpaq structure was analyzed for up to 100 cycles of lateral cyclic ice loading in the interval 3–5 MN/m. The pore-water pressures computed at three different locations agree well with piezometer measurements made in the actual structure. The results of the study demonstrate the importance of analyzing the stability of the structure for cyclic loading rather than relying on conclusions derived from static analysis. Key words : analysis, cyclic loading, Molikpaq, sand fill retention, offshore structure. |
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