Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 357-363 |
| Seitenumfang | 7 |
| Fachzeitschrift | Journal of Geotechnical and Geoenvironmental Engineering |
| Jahrgang | 138 |
| Ausgabenummer | 3 |
| Publikationsstatus | Veröffentlicht - 22 Juli 2011 |
Abstract
Monopiles are used as foundation structures for offshore wind energy towers. To ensure stable behavior of the monopile under cyclic loading conditions, a minimum embedded length is usually required. For this, different design criteria are used, some of which result in very large embedded depths for large-diameter monopiles. The suitability of these criteria is tested by means of numerical simulations. To account for cyclic loading, a new approach called the stiffness degradation method is applied. The results of a parametric study show that the design criteria used can indeed ensure optimum pile performance under static and cyclic loads. It is recommended that the requirement of a critical pile length, which leads to the minimum pile deflection under extreme load, is used as a design criterion. For the cases considered, this requirement results in only slightly greater cyclic deformations compared to the optimum case of very long piles. A further optimization of the required monopile length with respect to cyclic loading is possible, but requires specific consideration of cyclic behavior, as is done in this paper.
ASJC Scopus Sachgebiete
- Erdkunde und Planetologie (insg.)
- Geotechnik und Ingenieurgeologie
- Umweltwissenschaften (insg.)
- Allgemeine Umweltwissenschaft
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in: Journal of Geotechnical and Geoenvironmental Engineering, Jahrgang 138, Nr. 3, 22.07.2011, S. 357-363.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Minimum embedded length of cyclic horizontally loaded monopiles
AU - Kuo, Yu Shu
AU - Achmus, Martin
AU - Abdel-Rahman, Khalid
PY - 2011/7/22
Y1 - 2011/7/22
N2 - Monopiles are used as foundation structures for offshore wind energy towers. To ensure stable behavior of the monopile under cyclic loading conditions, a minimum embedded length is usually required. For this, different design criteria are used, some of which result in very large embedded depths for large-diameter monopiles. The suitability of these criteria is tested by means of numerical simulations. To account for cyclic loading, a new approach called the stiffness degradation method is applied. The results of a parametric study show that the design criteria used can indeed ensure optimum pile performance under static and cyclic loads. It is recommended that the requirement of a critical pile length, which leads to the minimum pile deflection under extreme load, is used as a design criterion. For the cases considered, this requirement results in only slightly greater cyclic deformations compared to the optimum case of very long piles. A further optimization of the required monopile length with respect to cyclic loading is possible, but requires specific consideration of cyclic behavior, as is done in this paper.
AB - Monopiles are used as foundation structures for offshore wind energy towers. To ensure stable behavior of the monopile under cyclic loading conditions, a minimum embedded length is usually required. For this, different design criteria are used, some of which result in very large embedded depths for large-diameter monopiles. The suitability of these criteria is tested by means of numerical simulations. To account for cyclic loading, a new approach called the stiffness degradation method is applied. The results of a parametric study show that the design criteria used can indeed ensure optimum pile performance under static and cyclic loads. It is recommended that the requirement of a critical pile length, which leads to the minimum pile deflection under extreme load, is used as a design criterion. For the cases considered, this requirement results in only slightly greater cyclic deformations compared to the optimum case of very long piles. A further optimization of the required monopile length with respect to cyclic loading is possible, but requires specific consideration of cyclic behavior, as is done in this paper.
KW - Cyclic loads
KW - Finite element method
KW - Monopiles
KW - Numerical analysis
KW - Offshore structures
KW - Piles
UR - http://www.scopus.com/inward/record.url?scp=84859327505&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)GT.1943-5606.0000602
DO - 10.1061/(ASCE)GT.1943-5606.0000602
M3 - Article
AN - SCOPUS:84859327505
VL - 138
SP - 357
EP - 363
JO - Journal of Geotechnical and Geoenvironmental Engineering
JF - Journal of Geotechnical and Geoenvironmental Engineering
SN - 1090-0241
IS - 3
ER -