Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 23rd International Offshore and Polar Engineering Conference, ISOPE 2013 |
| Pages | 164-172 |
| Number of pages | 9 |
| Publication status | Published - 2013 |
| Event | 23rd International Offshore and Polar Engineering Conference, ISOPE 2013 - Anchorage, AK, United States Duration: 30 Jun 2013 → 5 Jul 2013 |
Publication series
| Name | Proceedings of the International Offshore and Polar Engineering Conference |
|---|---|
| ISSN (Print) | 1098-6189 |
| ISSN (electronic) | 1555-1792 |
Abstract
The underestimation of cyclic effects on the axial capacity of grouted connections in monopile foundations led to vertical slippages, recently observed in a large number of offshore wind turbines. In this paper a progressive vertical misalignment of the grouted connection inside an oscillating structure is demonstrated by use of non-linear finite element simulations. Based on a fully integrated load calculation of a reference structure and results from numerical analyses, parameters are evaluated that may affect the long term behavior of the connection's axial capacity. Additionally, the influence of mechanical interlock on the fatigue performance of grouted joints is demonstrated.
Keywords
- Degradation, Dynamic, Grout fatigue, Grouted joints, Misalignments, Nonlinear, Offshore wind turbines, Settlements, Time domain simulation
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 23rd International Offshore and Polar Engineering Conference, ISOPE 2013. 2013. p. 164-172 (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 - Numerical investigations on local degradation and vertical misalignments of grouted joints in monopile foundations
AU - Schaumann, Peter
AU - Lochte-Holtgreven, Stephan
AU - Eichstädt, Rasmus
AU - Camp, Tim
AU - McCann, Graeme
PY - 2013
Y1 - 2013
N2 - The underestimation of cyclic effects on the axial capacity of grouted connections in monopile foundations led to vertical slippages, recently observed in a large number of offshore wind turbines. In this paper a progressive vertical misalignment of the grouted connection inside an oscillating structure is demonstrated by use of non-linear finite element simulations. Based on a fully integrated load calculation of a reference structure and results from numerical analyses, parameters are evaluated that may affect the long term behavior of the connection's axial capacity. Additionally, the influence of mechanical interlock on the fatigue performance of grouted joints is demonstrated.
AB - The underestimation of cyclic effects on the axial capacity of grouted connections in monopile foundations led to vertical slippages, recently observed in a large number of offshore wind turbines. In this paper a progressive vertical misalignment of the grouted connection inside an oscillating structure is demonstrated by use of non-linear finite element simulations. Based on a fully integrated load calculation of a reference structure and results from numerical analyses, parameters are evaluated that may affect the long term behavior of the connection's axial capacity. Additionally, the influence of mechanical interlock on the fatigue performance of grouted joints is demonstrated.
KW - Degradation
KW - Dynamic
KW - Grout fatigue
KW - Grouted joints
KW - Misalignments
KW - Nonlinear
KW - Offshore wind turbines
KW - Settlements
KW - Time domain simulation
UR - http://www.scopus.com/inward/record.url?scp=84883701098&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84883701098
SN - 9781880653999
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 164
EP - 172
BT - Proceedings of the 23rd International Offshore and Polar Engineering Conference, ISOPE 2013
T2 - 23rd International Offshore and Polar Engineering Conference, ISOPE 2013
Y2 - 30 June 2013 through 5 July 2013
ER -