Details
| Original language | English |
|---|---|
| Title of host publication | Offshore Technology |
| Publisher | American Society of Mechanical Engineers(ASME) |
| ISBN (electronic) | 9780791886830 |
| Publication status | Published - 22 Sept 2023 |
| Event | ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2023 - Melbourne, Australia Duration: 11 Jun 2023 → 16 Jun 2023 |
Publication series
| Name | Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE |
|---|---|
| Volume | 1 |
Abstract
The buckling capacity of suction caissons during installation must be investigated, as these are sensitive to buckling due to their thin-walled structure. A geometric material nonlinear analysis with imperfections, in which the soil is modeled using continuum elements, provides the most realistic results. Nonetheless, the modeling of the nonlinear material behavior of the soil as well as the consideration of multiple imperfection shapes are associated with a high modeling and computational effort. To avoid this, springs are often used to model the soil. However, the common approaches for determining lateral soil springs were developed experimentally for flexible piles and not short caissons. In this work finite element models are created to derive adapted soil springs for large scale tests on suction caissons. The comparison of the implemented soil springs with the soil springs from the guidelines shows that an adjustment of the commonly used springs is necessary. A factor that allows the springs to approximate the behavior of the continuum elements is formulated. Additional models that analyze the supporting effect of the soil on the buckling capacity of the suction caisson using continuum finite elements and soil springs foundations are developed. These models also compare the effect of the embedment depth and the soil bearing capacity.
Keywords
- Buckling, FEM, Offshore Wind Energy, Offshore Wind Foundations, Stress analysis
ASJC Scopus subject areas
- Engineering(all)
- Ocean Engineering
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Mechanical Engineering
Cite this
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Offshore Technology. American Society of Mechanical Engineers(ASME), 2023. v001t00a006 (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 1).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Derivation of adapted soil springs for the buckling analysis of suction caissons during installation
AU - Ramos, Juan Pablo
AU - Widerspan, Viktor
AU - Heinrich, Dariya
AU - Böhm, Manuela
N1 - Funding Information: The work presented in this contribution was carried out within the ProBucket Project. The authors kindly acknowledge the financial support provided by the German Federal Ministry of Economic Affairs and Climate Action (FKZ 03EE3033). The support provided by the project partners is also gratefully acknowledged.
PY - 2023/9/22
Y1 - 2023/9/22
N2 - The buckling capacity of suction caissons during installation must be investigated, as these are sensitive to buckling due to their thin-walled structure. A geometric material nonlinear analysis with imperfections, in which the soil is modeled using continuum elements, provides the most realistic results. Nonetheless, the modeling of the nonlinear material behavior of the soil as well as the consideration of multiple imperfection shapes are associated with a high modeling and computational effort. To avoid this, springs are often used to model the soil. However, the common approaches for determining lateral soil springs were developed experimentally for flexible piles and not short caissons. In this work finite element models are created to derive adapted soil springs for large scale tests on suction caissons. The comparison of the implemented soil springs with the soil springs from the guidelines shows that an adjustment of the commonly used springs is necessary. A factor that allows the springs to approximate the behavior of the continuum elements is formulated. Additional models that analyze the supporting effect of the soil on the buckling capacity of the suction caisson using continuum finite elements and soil springs foundations are developed. These models also compare the effect of the embedment depth and the soil bearing capacity.
AB - The buckling capacity of suction caissons during installation must be investigated, as these are sensitive to buckling due to their thin-walled structure. A geometric material nonlinear analysis with imperfections, in which the soil is modeled using continuum elements, provides the most realistic results. Nonetheless, the modeling of the nonlinear material behavior of the soil as well as the consideration of multiple imperfection shapes are associated with a high modeling and computational effort. To avoid this, springs are often used to model the soil. However, the common approaches for determining lateral soil springs were developed experimentally for flexible piles and not short caissons. In this work finite element models are created to derive adapted soil springs for large scale tests on suction caissons. The comparison of the implemented soil springs with the soil springs from the guidelines shows that an adjustment of the commonly used springs is necessary. A factor that allows the springs to approximate the behavior of the continuum elements is formulated. Additional models that analyze the supporting effect of the soil on the buckling capacity of the suction caisson using continuum finite elements and soil springs foundations are developed. These models also compare the effect of the embedment depth and the soil bearing capacity.
KW - Buckling
KW - FEM
KW - Offshore Wind Energy
KW - Offshore Wind Foundations
KW - Stress analysis
UR - http://www.scopus.com/inward/record.url?scp=85174069778&partnerID=8YFLogxK
U2 - 10.1115/OMAE2023-103701
DO - 10.1115/OMAE2023-103701
M3 - Conference contribution
AN - SCOPUS:85174069778
T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
BT - Offshore Technology
PB - American Society of Mechanical Engineers(ASME)
T2 - ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2023
Y2 - 11 June 2023 through 16 June 2023
ER -