Details
| Original language | English |
|---|---|
| Title of host publication | Computational Methods in Marine Engineering V - Proceedings of the 5th International Conference on Computational Methods in Marine Engineering, MARINE 2013 |
| Pages | 842-853 |
| Number of pages | 12 |
| Publication status | Published - 2013 |
| Event | 5th International Conference on Computational Methods in Marine Engineering, MARINE 2013 - Hamburg, Germany Duration: 29 May 2013 → 31 May 2013 |
Publication series
| Name | Computational Methods in Marine Engineering V - Proceedings of the 5th International Conference on Computational Methods in Marine Engineering, MARINE 2013 |
|---|
Abstract
Spudcans are a type of foundation for mobile jack-up rigs and are connected to each of the three or four independent legs of a rig. These rigs are widely operating in the offshore industries such as oil and gas exploration and offshore wind park constructions. The diameter of a spudcan is typically between 10 and 16 m, but has steadily increased in recent years with some exceeding 20 m. An accurate prediction of the leg or spudcan penetration is required to assess the minimum leg length of a jack-up rig and to predict any hazards such as risk of rapid leg penetration that can destabilize the rig and lead to catastrophic accidents. Rapid and sudden leg penetration can occur in layered soils where a strong layer overlies a weak layer. This type of failure mechanism in soil is called "punch through". The current state-of-practice to assess the penetration depth of a spudcan is to evaluate the bearing capacity of the footing applying analytical methods at discrete depths. Analytical bearing capacity methods strongly simplify the penetration process and rely on empirical factors. Continued investigation of the spudcan penetration process by means of physical or numerical models can reduce the amount of empiricism in applied methods in practice, thereby increase accuracy in penetration predictions and reduce risk of rig instability. The results of a finite element numerical model to investigate the spudcan penetration process in layered soils are presented in this paper. The numerical model combines conventional Lagrangian elements, which represent the spudcan, with Eulerian elements that idealize the soil. The utilization of this so-called Coupled Eulerian-Lagrangian finite element method enables the numerical simulation of large deformation processes such as the spudcan footing penetration. Preliminary results are presented and compared with state-of-practice analytical solutions.
Keywords
- Coupled eulerian-lagrangian, Layered soil, Soil-structure-interaction, Spudcan
ASJC Scopus subject areas
- Engineering(all)
- Ocean Engineering
- Mathematics(all)
- Applied Mathematics
Cite this
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Computational Methods in Marine Engineering V - Proceedings of the 5th International Conference on Computational Methods in Marine Engineering, MARINE 2013. 2013. p. 842-853 (Computational Methods in Marine Engineering V - Proceedings of the 5th International Conference on Computational Methods in Marine Engineering, MARINE 2013).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Numerical investigation of spudcan footing penetration in layered soil
AU - Gütz, P.
AU - Peralta, P.
AU - Abdel-Rahman, K.
AU - Achmus, M.
PY - 2013
Y1 - 2013
N2 - Spudcans are a type of foundation for mobile jack-up rigs and are connected to each of the three or four independent legs of a rig. These rigs are widely operating in the offshore industries such as oil and gas exploration and offshore wind park constructions. The diameter of a spudcan is typically between 10 and 16 m, but has steadily increased in recent years with some exceeding 20 m. An accurate prediction of the leg or spudcan penetration is required to assess the minimum leg length of a jack-up rig and to predict any hazards such as risk of rapid leg penetration that can destabilize the rig and lead to catastrophic accidents. Rapid and sudden leg penetration can occur in layered soils where a strong layer overlies a weak layer. This type of failure mechanism in soil is called "punch through". The current state-of-practice to assess the penetration depth of a spudcan is to evaluate the bearing capacity of the footing applying analytical methods at discrete depths. Analytical bearing capacity methods strongly simplify the penetration process and rely on empirical factors. Continued investigation of the spudcan penetration process by means of physical or numerical models can reduce the amount of empiricism in applied methods in practice, thereby increase accuracy in penetration predictions and reduce risk of rig instability. The results of a finite element numerical model to investigate the spudcan penetration process in layered soils are presented in this paper. The numerical model combines conventional Lagrangian elements, which represent the spudcan, with Eulerian elements that idealize the soil. The utilization of this so-called Coupled Eulerian-Lagrangian finite element method enables the numerical simulation of large deformation processes such as the spudcan footing penetration. Preliminary results are presented and compared with state-of-practice analytical solutions.
AB - Spudcans are a type of foundation for mobile jack-up rigs and are connected to each of the three or four independent legs of a rig. These rigs are widely operating in the offshore industries such as oil and gas exploration and offshore wind park constructions. The diameter of a spudcan is typically between 10 and 16 m, but has steadily increased in recent years with some exceeding 20 m. An accurate prediction of the leg or spudcan penetration is required to assess the minimum leg length of a jack-up rig and to predict any hazards such as risk of rapid leg penetration that can destabilize the rig and lead to catastrophic accidents. Rapid and sudden leg penetration can occur in layered soils where a strong layer overlies a weak layer. This type of failure mechanism in soil is called "punch through". The current state-of-practice to assess the penetration depth of a spudcan is to evaluate the bearing capacity of the footing applying analytical methods at discrete depths. Analytical bearing capacity methods strongly simplify the penetration process and rely on empirical factors. Continued investigation of the spudcan penetration process by means of physical or numerical models can reduce the amount of empiricism in applied methods in practice, thereby increase accuracy in penetration predictions and reduce risk of rig instability. The results of a finite element numerical model to investigate the spudcan penetration process in layered soils are presented in this paper. The numerical model combines conventional Lagrangian elements, which represent the spudcan, with Eulerian elements that idealize the soil. The utilization of this so-called Coupled Eulerian-Lagrangian finite element method enables the numerical simulation of large deformation processes such as the spudcan footing penetration. Preliminary results are presented and compared with state-of-practice analytical solutions.
KW - Coupled eulerian-lagrangian
KW - Layered soil
KW - Soil-structure-interaction
KW - Spudcan
UR - http://www.scopus.com/inward/record.url?scp=84891355665&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84891355665
SN - 9788494140747
T3 - Computational Methods in Marine Engineering V - Proceedings of the 5th International Conference on Computational Methods in Marine Engineering, MARINE 2013
SP - 842
EP - 853
BT - Computational Methods in Marine Engineering V - Proceedings of the 5th International Conference on Computational Methods in Marine Engineering, MARINE 2013
T2 - 5th International Conference on Computational Methods in Marine Engineering, MARINE 2013
Y2 - 29 May 2013 through 31 May 2013
ER -