Design of offshore foundation systems requires assessment of the effects of cyclic loading on the soil strength. This paper investigates the applicability of the strain accumulation procedure, which is used to assess the effects of wave loading on the soil strength. Staged undrained cyclic simple shear tests were conducted on a carbonate sediment from the North West shelf of Australia, with varying shear stress amplitude in each stage. The shear strain mobilised at the end of the staged tests is compared with the value predicted by the strain accumulation procedure, using shear strain contours constructed from the results of single amplitude undrained cyclic simple shear tests. It was found that the strain accumulation procedure gives adequate prediction for normalised cyclic shear stress less or equal to 0.3, but largely underestimates the cyclic shear strain for normalised cyclic shear stress greater than 0.3 (the cyclic shear stress being normalised by the effective vertical stress at the end of consolidation).
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ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
June 8–13, 2014
San Francisco, California, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4541-7
PROCEEDINGS PAPER
Strain Accumulation Procedure During Staged Cyclic Loading of Carbonate Sediments
Nathalie Boukpeti,
Nathalie Boukpeti
University of Western Australia, Perth, Australia
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Barry Lehane,
Barry Lehane
University of Western Australia, Perth, Australia
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J. Antonio H. Carraro
J. Antonio H. Carraro
University of Western Australia, Perth, Australia
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Nathalie Boukpeti
University of Western Australia, Perth, Australia
Barry Lehane
University of Western Australia, Perth, Australia
J. Antonio H. Carraro
University of Western Australia, Perth, Australia
Paper No:
OMAE2014-23692, V003T10A012; 7 pages
Published Online:
October 1, 2014
Citation
Boukpeti, N, Lehane, B, & Carraro, JAH. "Strain Accumulation Procedure During Staged Cyclic Loading of Carbonate Sediments." Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. Volume 3: Offshore Geotechnics. San Francisco, California, USA. June 8–13, 2014. V003T10A012. ASME. https://doi.org/10.1115/OMAE2014-23692
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