Continuous profiles from in-situ penetrometer tests are now identified as essential for site specific soil investigation as part of designing offshore structures in deep and ultradeep waters and in highly layered seabed conditions. This paper describes the results from large deformation FE (LDFE) analysis undertaken to provide insight into the behavior of cone penetrometer penetrating through single layer non-homogeneous clays and three-layer uniform soft-stiff-soft clays. For the smooth cone penetration in non-homogeneous clays, the soil strength non-homogeneity factor was shown to have insignificant effect on the cone bearing capacity factor. However, for the rough cone, the bearing capacity factor in non-homogeneous clay was about 10∼12% lower than that in uniform clay. Bearing capacity factors for smooth and rough cones were also similar for non-homogeneous clay. For cone penetration in stratified soft-stiff-soft clays, a minimum layer thickness of 20 diameters was required to mobilise the full resistance of the stiff layer. The corresponding soil flow mechanisms are also discussed linking directly to the profile of penetration resistance.
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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
Large Deformation FE Analyses of Cone Penetration in Single Layer Non-Homogeneous and Three-Layer Soft-Stiff-Soft Clays
Hongliang Ma,
Hongliang Ma
University of Western Australia, Perth, WA, Australia
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Mi Zhou,
Mi Zhou
University of Western Australia, Perth, WA, Australia
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Yuxia Hu,
Yuxia Hu
University of Western Australia, Perth, WA, Australia
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Muhammad Shazzad Hossain
Muhammad Shazzad Hossain
University of Western Australia, Perth, WA, Australia
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Hongliang Ma
University of Western Australia, Perth, WA, Australia
Mi Zhou
University of Western Australia, Perth, WA, Australia
Yuxia Hu
University of Western Australia, Perth, WA, Australia
Muhammad Shazzad Hossain
University of Western Australia, Perth, WA, Australia
Paper No:
OMAE2014-23709, V003T10A013; 9 pages
Published Online:
October 1, 2014
Citation
Ma, H, Zhou, M, Hu, Y, & Hossain, MS. "Large Deformation FE Analyses of Cone Penetration in Single Layer Non-Homogeneous and Three-Layer Soft-Stiff-Soft Clays." 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. V003T10A013. ASME. https://doi.org/10.1115/OMAE2014-23709
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