Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 33rd International Ocean and Polar Engineering Conference, 2023 |
| Editors | Jin S. Chung, Decheng Wan, Satoru Yamaguchi, Shiqiang Yan, Igor Buzin, Hiroyasu Kawai, Hua Liu, Ivana Kubat, Bor-Feng Peng, Ali Reza, Venkatachalam Sriram, Suak Ho Van |
| Publisher | International Society of Offshore and Polar Engineers |
| Pages | 1341-1348 |
| Number of pages | 8 |
| ISBN (print) | 9781880653807 |
| Publication status | Published - 2023 |
| Event | 33rd International Ocean and Polar Engineering Conference, ISOPE 2023 - Ottawa, Canada Duration: 19 Jun 2023 → 23 Jun 2023 |
Publication series
| Name | Proceedings of the International Offshore and Polar Engineering Conference |
|---|---|
| ISSN (Print) | 1098-6189 |
| ISSN (electronic) | 1555-1792 |
Abstract
Suction buckets are a foundation type for offshore structures. They are installed by evacuating the water inside the bucket, which creates an underpressure and thus a vertical installation force. The loading on the cylindrical shell leads to a risk of structural buckling of the structure. Initial geometric imperfections and boundary conditions imposed by the constraining soil influence the buckling resistance significantly. Adequate modeling of the highly nonlinear soil behavior is crucial to capture the overall structural behavior. However, no recommendations on the soil model can be found in design codes and most approaches applied in literature were neither compared nor validated. Within this paper, modeling the soil as continuum with Mohr-Coulomb failure criterion is compared to different nonlinear soil spring approaches. Finite element buckling analyses with different soil conditions and embedment depths were conducted. The comparison of the different modeling approaches shows that a modification of soil spring properties is necessary to apply them for buckling analysis of suction buckets.
Keywords
- buckling analysis, lateral soil restraint, offshore foundation, soil springs, soil-structure interaction, suction bucket
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
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Proceedings of the 33rd International Ocean and Polar Engineering Conference, 2023. ed. / Jin S. Chung; Decheng Wan; Satoru Yamaguchi; Shiqiang Yan; Igor Buzin; Hiroyasu Kawai; Hua Liu; Ivana Kubat; Bor-Feng Peng; Ali Reza; Venkatachalam Sriram; Suak Ho Van. International Society of Offshore and Polar Engineers, 2023. p. 1341-1348 (Proceedings of the International Offshore and Polar Engineering Conference).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Soil modeling for buckling analyses of suction bucket installation in sand
AU - Böhm, Manuela
AU - Schaumann, Peter
AU - Ghafoori, Elyas
N1 - Publisher Copyright: © 2023 by the International Society of Offshore and Polar Engineers (ISOPE).
PY - 2023
Y1 - 2023
N2 - Suction buckets are a foundation type for offshore structures. They are installed by evacuating the water inside the bucket, which creates an underpressure and thus a vertical installation force. The loading on the cylindrical shell leads to a risk of structural buckling of the structure. Initial geometric imperfections and boundary conditions imposed by the constraining soil influence the buckling resistance significantly. Adequate modeling of the highly nonlinear soil behavior is crucial to capture the overall structural behavior. However, no recommendations on the soil model can be found in design codes and most approaches applied in literature were neither compared nor validated. Within this paper, modeling the soil as continuum with Mohr-Coulomb failure criterion is compared to different nonlinear soil spring approaches. Finite element buckling analyses with different soil conditions and embedment depths were conducted. The comparison of the different modeling approaches shows that a modification of soil spring properties is necessary to apply them for buckling analysis of suction buckets.
AB - Suction buckets are a foundation type for offshore structures. They are installed by evacuating the water inside the bucket, which creates an underpressure and thus a vertical installation force. The loading on the cylindrical shell leads to a risk of structural buckling of the structure. Initial geometric imperfections and boundary conditions imposed by the constraining soil influence the buckling resistance significantly. Adequate modeling of the highly nonlinear soil behavior is crucial to capture the overall structural behavior. However, no recommendations on the soil model can be found in design codes and most approaches applied in literature were neither compared nor validated. Within this paper, modeling the soil as continuum with Mohr-Coulomb failure criterion is compared to different nonlinear soil spring approaches. Finite element buckling analyses with different soil conditions and embedment depths were conducted. The comparison of the different modeling approaches shows that a modification of soil spring properties is necessary to apply them for buckling analysis of suction buckets.
KW - buckling analysis
KW - lateral soil restraint
KW - offshore foundation
KW - soil springs
KW - soil-structure interaction
KW - suction bucket
UR - http://www.scopus.com/inward/record.url?scp=85188660836&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85188660836
SN - 9781880653807
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 1341
EP - 1348
BT - Proceedings of the 33rd International Ocean and Polar Engineering Conference, 2023
A2 - Chung, Jin S.
A2 - Wan, Decheng
A2 - Yamaguchi, Satoru
A2 - Yan, Shiqiang
A2 - Buzin, Igor
A2 - Kawai, Hiroyasu
A2 - Liu, Hua
A2 - Kubat, Ivana
A2 - Peng, Bor-Feng
A2 - Reza, Ali
A2 - Sriram, Venkatachalam
A2 - Van, Suak Ho
PB - International Society of Offshore and Polar Engineers
T2 - 33rd International Ocean and Polar Engineering Conference, ISOPE 2023
Y2 - 19 June 2023 through 23 June 2023
ER -