Abstract
In the offshore wind turbine industry the most widely used foundation type is the monopile. Due to the wave and wind forces the monopile is subjected to a strong cyclic loading with varying amplitude, maximum loading level, and varying loading period. In this paper the soil–pile interaction of a monopile in sand subjected to a long-term cyclic lateral loading is investigated by means of small scale tests. The tests are conducted with a mechanical loading rig capable of applying the cyclic loading as a sine signal with varying amplitude, mean loading level, and loading period for more than 60 000 cycles. The tests are conducted in dense saturated sand. The maximum moment applied in the cyclic tests is varied from 18% to 36% of the ultimate lateral resistance found in a static loading test. The tests reveal that the accumulated rotation can be expressed by use of a power function. Further, static tests conducted post cyclic loading indicate that the static ultimate capacity increases with the magnitude of cyclic loading.
Original language | English |
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Title of host publication | Challenges And Innovations In Geotechnics : Proccedings of the 18th International conference on Soil Mechanics and Geotechnical Engineering |
Editors | Pierre Delage, Jacques Desrues, Roger Frank, Alain Puech, Francois Schlosser |
Number of pages | 4 |
Publisher | Presses des Ponts |
Publication date | 2013 |
Publication status | Published - 2013 |
Event | 18th International Conference on Soil Mechanics and Geotechnical Engineering: Challenges and innovations in Geotechnics - The Paris International Conference Centre (Palais des Congrès), Paris, France Duration: 2 Sept 2013 → 6 Sept 2013 Conference number: 18 |
Conference
Conference | 18th International Conference on Soil Mechanics and Geotechnical Engineering |
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Number | 18 |
Location | The Paris International Conference Centre (Palais des Congrès) |
Country/Territory | France |
City | Paris |
Period | 02/09/2013 → 06/09/2013 |