Numerical modelling of uplifting a surface foundation on clay
Numerical modelling of uplifting a surface foundation on clay
Offshore shallow foundations are required to be retrieved at the end of their life cycle. The required force is much larger than their own submerged weight due to significant suction generated at the invert of the foundation. This paper reports numerical modelling of uplifting a surface foundation whilst employing a hydro-mechanic interface that can capture both mechanic and hydraulic interactions between foundation and soil. The soil behaviour was modelled using the modified Cam-Clay model. After verifying against physical modelling data from centrifuge tests, the numerical results are interpretated in terms of pore pressure distribution at the interface, deformation mechanism and stress path of soils, which enhances the understanding of uplift response of surface footings on clay seabed.
Sen Mei; Yinghui Tian; Mark Jason Cassidy
10th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2023)
12. Offshore geotechnics
https://doi.org/10.53243/NUMGE2023-10
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