Abstract
In current designs of offshore wind turbines, monopiles are often used as foundation. The behaviour of the monopoles when subjected to lateral loading has not been fully investigated. In this paper the diameter effect on laterally loaded non-slender piles in sand is evaluated by means of results from six small-scale laboratory tests, numerical modelling of the same test setup and existing theory. From the numerical models, p−y curves are derived and compared to current design regulations. The recommendations in API (1993) and DNV (1992) are observed to be in poor agreement with the numerically obtained p−y curves. The initial stiffness, Epy*, of the p−y curves is found to increase with increasing pile diameter. Considerable uncertainties are observed to be related to small-scale testing, and the evaluations clearly indicate that the accuracy of small-scale testing is increased when increasing the pile diameter and applying overburden pressure.
| Original language | English |
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| Title of host publication | Symposium Proceedings : 64th Canadian Geotechnical Conference and 14th Pan-American Conference on Soil Mechanics and Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering |
| Number of pages | 8 |
| Place of Publication | Toronto, Ontario |
| Publisher | Pan-AM CGS Geotechnical Conference |
| Publication date | 2011 |
| Publication status | Published - 2011 |
| Event | 2011 Pan-Am CGS Geotechnical Conference - Toronto, Ontario, Canada Duration: 2 Oct 2011 → 6 Oct 2011 |
Conference
| Conference | 2011 Pan-Am CGS Geotechnical Conference |
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| Country/Territory | Canada |
| City | Toronto, Ontario |
| Period | 02/10/2011 → 06/10/2011 |