Details
| Original language | English |
|---|---|
| Journal | Marine Georesources and Geotechnology |
| Early online date | 11 Apr 2025 |
| Publication status | E-pub ahead of print - 11 Apr 2025 |
Abstract
As an economic and robust solution to the sustainable energy resource, the monopile foundation has been utilized in most offshore wind farms. In design practice, usually the p-y method is applied in the calculation of the monopile static behavior, while the effect of cyclic loading with varying number of cycles also requires accurate consideration. Hence, a calculation method termed “Stiffness Degradation Method” has been applied in numerical simulations to calculate pile behavior, dependent on the actual number of cycles and with that also p-y curves for a given number of load cycles were derived. From the calculation results, a simple-to-use approach for rigid monopile foundations named “Cyclic Overlay Model” for the derivation of cyclic p-y curves has been proposed. Therefore, a concise introduction to this semi-analytical approach is provided. Recently, a research project named “Ho-Pile” involving large-scale tests for horizontally loaded piles was planned and conducted. In this article, the results of experimental investigations have been evaluated specifically for the first 10,000 load cycles. Here, the usability of the Cyclic Overlay Model for a practically operational magnitude of cyclic loading was proven by a comparison with other cyclic proposals.
Keywords
- cyclic overlay model, Cyclic p-y curves, horizontal loading, large scale tests, monopiles, offshore geotechnics
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Oceanography
- Earth and Planetary Sciences(all)
- Geotechnical Engineering and Engineering Geology
- Engineering(all)
- Ocean Engineering
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In: Marine Georesources and Geotechnology, 11.04.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Evaluation of a cyclic p-y overlay model by large-scale tests for monopiles in sand
AU - Song, Junnan
AU - Hansmann, Dennis
AU - Achmus, Martin
N1 - Publisher Copyright: © 2025 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2025/4/11
Y1 - 2025/4/11
N2 - As an economic and robust solution to the sustainable energy resource, the monopile foundation has been utilized in most offshore wind farms. In design practice, usually the p-y method is applied in the calculation of the monopile static behavior, while the effect of cyclic loading with varying number of cycles also requires accurate consideration. Hence, a calculation method termed “Stiffness Degradation Method” has been applied in numerical simulations to calculate pile behavior, dependent on the actual number of cycles and with that also p-y curves for a given number of load cycles were derived. From the calculation results, a simple-to-use approach for rigid monopile foundations named “Cyclic Overlay Model” for the derivation of cyclic p-y curves has been proposed. Therefore, a concise introduction to this semi-analytical approach is provided. Recently, a research project named “Ho-Pile” involving large-scale tests for horizontally loaded piles was planned and conducted. In this article, the results of experimental investigations have been evaluated specifically for the first 10,000 load cycles. Here, the usability of the Cyclic Overlay Model for a practically operational magnitude of cyclic loading was proven by a comparison with other cyclic proposals.
AB - As an economic and robust solution to the sustainable energy resource, the monopile foundation has been utilized in most offshore wind farms. In design practice, usually the p-y method is applied in the calculation of the monopile static behavior, while the effect of cyclic loading with varying number of cycles also requires accurate consideration. Hence, a calculation method termed “Stiffness Degradation Method” has been applied in numerical simulations to calculate pile behavior, dependent on the actual number of cycles and with that also p-y curves for a given number of load cycles were derived. From the calculation results, a simple-to-use approach for rigid monopile foundations named “Cyclic Overlay Model” for the derivation of cyclic p-y curves has been proposed. Therefore, a concise introduction to this semi-analytical approach is provided. Recently, a research project named “Ho-Pile” involving large-scale tests for horizontally loaded piles was planned and conducted. In this article, the results of experimental investigations have been evaluated specifically for the first 10,000 load cycles. Here, the usability of the Cyclic Overlay Model for a practically operational magnitude of cyclic loading was proven by a comparison with other cyclic proposals.
KW - cyclic overlay model
KW - Cyclic p-y curves
KW - horizontal loading
KW - large scale tests
KW - monopiles
KW - offshore geotechnics
UR - http://www.scopus.com/inward/record.url?scp=105002722108&partnerID=8YFLogxK
U2 - 10.1080/1064119X.2025.2477775
DO - 10.1080/1064119X.2025.2477775
M3 - Article
AN - SCOPUS:105002722108
JO - Marine Georesources and Geotechnology
JF - Marine Georesources and Geotechnology
SN - 1064-119X
ER -