Details
| Original language | English |
|---|---|
| Title of host publication | The 30th International Ocean and Polar Engineering Conference |
| Publisher | International Society of Offshore and Polar Engineers |
| ISBN (electronic) | 9781880653845 |
| Publication status | Published - 11 Oct 2020 |
| Event | 30th International Ocean and Polar Engineering Conference, ISOPE 2020 - Virtual, Online Duration: 11 Oct 2020 → 16 Oct 2020 |
Publication series
| Name | Proceedings of the International Offshore and Polar Engineering Conference |
|---|---|
| ISSN (Print) | 1098-6189 |
| ISSN (electronic) | 1555-1792 |
Abstract
The foundation system for wind turbines can be a shallow concrete raft or a pile raft foundation; this depends on the loading conditions and on the sub-soil parameters. The economic design of the pile foundation depends mainly on the number of piles, pile diameter, pile arrangement, pile length and inclination of the piles. Since wind turbines are structures under high dynamic loading conditions, requirements of minimum dynamic stiffness for the overall operational behavior of the pile foundation system must be checked in addition to the behavior under static loading. For the simplified overall calculation, an approach for dynamic equivalent rocking spring stiffness is given in the literature for shallow foundations. It will be examined whether certain pile raft systems can possibly be considered as equivalent shallow foundations so that rocking stiffness approach for shallow foundations can be applied for predesign. In this paper, the equivalent rocking stiffness for a pile raft foundation is investigated using finite element method (FEM). Within the framework of a parametric study, the main factors affecting the equivalent rocking stiffness are identified and subsequently evaluated. Finally the applicability of the rocking spring stiffness for shallow foundations to be adopted for pile raft is checked.
Keywords
- FEM, Hardening soil model (HSS), Pile raft foundations, Rocking stiffness
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
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The 30th International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers, 2020. ISOPE-I-20-2205 (Proceedings of the International Offshore and Polar Engineering Conference).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research
}
TY - GEN
T1 - Investigation of the Equivalent Rocking Stiffness for Pile Raft Foundation Systems of Wind Turbines
AU - Cao, Shuhan
AU - Abdel-Rahman, Khalid
AU - Tom Wörden, Florian
AU - Achmus, Martin
N1 - Publisher Copyright: © 2020 by the International Society of Offshore and Polar Engineers (ISOPE). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/10/11
Y1 - 2020/10/11
N2 - The foundation system for wind turbines can be a shallow concrete raft or a pile raft foundation; this depends on the loading conditions and on the sub-soil parameters. The economic design of the pile foundation depends mainly on the number of piles, pile diameter, pile arrangement, pile length and inclination of the piles. Since wind turbines are structures under high dynamic loading conditions, requirements of minimum dynamic stiffness for the overall operational behavior of the pile foundation system must be checked in addition to the behavior under static loading. For the simplified overall calculation, an approach for dynamic equivalent rocking spring stiffness is given in the literature for shallow foundations. It will be examined whether certain pile raft systems can possibly be considered as equivalent shallow foundations so that rocking stiffness approach for shallow foundations can be applied for predesign. In this paper, the equivalent rocking stiffness for a pile raft foundation is investigated using finite element method (FEM). Within the framework of a parametric study, the main factors affecting the equivalent rocking stiffness are identified and subsequently evaluated. Finally the applicability of the rocking spring stiffness for shallow foundations to be adopted for pile raft is checked.
AB - The foundation system for wind turbines can be a shallow concrete raft or a pile raft foundation; this depends on the loading conditions and on the sub-soil parameters. The economic design of the pile foundation depends mainly on the number of piles, pile diameter, pile arrangement, pile length and inclination of the piles. Since wind turbines are structures under high dynamic loading conditions, requirements of minimum dynamic stiffness for the overall operational behavior of the pile foundation system must be checked in addition to the behavior under static loading. For the simplified overall calculation, an approach for dynamic equivalent rocking spring stiffness is given in the literature for shallow foundations. It will be examined whether certain pile raft systems can possibly be considered as equivalent shallow foundations so that rocking stiffness approach for shallow foundations can be applied for predesign. In this paper, the equivalent rocking stiffness for a pile raft foundation is investigated using finite element method (FEM). Within the framework of a parametric study, the main factors affecting the equivalent rocking stiffness are identified and subsequently evaluated. Finally the applicability of the rocking spring stiffness for shallow foundations to be adopted for pile raft is checked.
KW - FEM
KW - Hardening soil model (HSS)
KW - Pile raft foundations
KW - Rocking stiffness
UR - http://www.scopus.com/inward/record.url?scp=85090898322&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85090898322
T3 - Proceedings of the International Offshore and Polar Engineering Conference
BT - The 30th International Ocean and Polar Engineering Conference
PB - International Society of Offshore and Polar Engineers
T2 - 30th International Ocean and Polar Engineering Conference, ISOPE 2020
Y2 - 11 October 2020 through 16 October 2020
ER -