Loading...
Please wait, while we are loading the content...
Similar Documents
Centrifuge modelling of long term cyclic lateral loading on monopiles
| Content Provider | Scilit |
|---|---|
| Author | Bayton, S. M. Black, Jonathan Klinkvort, R. T. |
| Copyright Year | 2018 |
| Description | A series of centrifuge cyclic monopile lateral loading experiments in dry sand are presented. Model foundation tests were performed at 100 gravities (100g) of a prototype pile 5 m in diameter with an embedment depth of L/D = 5. Observations indicate that permanent rotational failure criteria (θ at mudline equal to $0.25^{°}$) may not be reached for load magnitudes 40% or less of the monotonic failure load for $10^{7}$ cycles. A cyclic degradation model for monopile rotation accumulation is also presented. Results from the cyclic tests are used to plot contour lines of predicted rotations based on load magnitude and number of cycles applied. This model is then used to predict cyclic rotational accumulation of a load magnitude ramp test and appears to perform well. The monopile remains the foundation of choice for the offshore wind industry, owing to a number of factors; it's simple, suitability for mass production and has a previous successful track record. As the offshore industry seeks to minimise the cost of energy production, current constraints including water depth and subsequent pile diameters are repeatedly being increased presenting potential design challenges, both in terms of ultimate limit state and long term fatigue limit state. The chapter presents the results from a suite of centrifuge cyclically loaded model scale monopile tests. It expands the limited available datasets to present a cyclic accumulation model adapted for monopile cyclic design. The Norwegian Geotechnical Institute cyclic degradation approach is a powerful tool used in cyclic design of geotechnical structures. The cyclic packages from the experimental ramp results can be traced onto the contour plot. Book Name: Physical Modelling in Geotechnics |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2018-0-86959-9&isbn=9780429438660&doi=10.1201/9780429438660-103&format=pdf |
| Ending Page | 694 |
| Page Count | 6 |
| Starting Page | 689 |
| DOI | 10.1201/9780429438660-103 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2018-07-11 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Physical Modelling in Geotechnics Geological Engineering Model Centrifuge Cyclic Monopile Cyclic Load Ramp Plot Cyclic Degradation |
| Content Type | Text |
| Resource Type | Chapter |
