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https://hdl.handle.net/123456789/802| Τύπος: | Ανακοίνωση σε συνέδριο |
| Τίτλος: | Seabed foundation of jacket wind-platforms |
| Συγγραφέας: | [EL] Αντωνίου, Μαρία[EN] Antoniou, Maria [EL] Γελαγώτη, Φάνη [EL] Κουρκουλής, Ράλλης[EN] Kourkoulis, Rallis [EL] Καραμάνος, Σπυρίδων[EN] Karamanos, Spyridon |
| Ημερομηνία: | 23/06/2019 |
| Περίληψη: | The paper introduces a cost-effective and easy-to-install foundation concept to be used for the seabed support of jacket wind-platforms. The concept, commonly termed as suction caisson, is a skirt foundation (i.e. a stiff cylindrical shell with an open bottom and a top slab) that is particularly advertised for the ease of installation and the minimization of installation noise compared to piles. Aiming to raise the barriers towards their implementation, the paper initially illustrates the key parameters controlling the response of suction caissons under dynamic loading, by means of a dimensional analysis and a subsequent parametric study. The caissons are shown to behave excellently when subjected to pure dynamic loading, displaying only minimal permanent displacements. Alarming issues for their performance arise when a non-zero steady force is superimposed to the subsequent dynamic loading. In the case of concurrent static and seismic loading, analyses results reveal that the rate and amplitude of the irrecoverable caisson deformation is controlled by the amplitude of the initially imposed static action and the intensity of the earthquake motion. Subsequently, an 8MW jacket-supported offshore wind-turbine (OWT) installed at a water depth site of 60m in the seismically active region of North-Western Adriatic is used as benchmark example to examine suction caisson behavior within the soil-structure system. The dynamic response of the benchmark OWT is numerically explored by exciting the system with a regional seismic record from the L’Aquila earthquake. As expected, the jacket is shown to behave excellently when subjected to pure earthquake loading, displaying minimal permanent foundation rotation. When earthquake loading is combined with a co-seismic wind action, jacket legs settle unevenly while the OWT tower builds up rotations at an increasing rate. |
| Γλώσσα: | Αγγλικά |
| Τόπος δημοσίευσης: | Chania, Greece |
| Σελίδες: | 15 |
| Θεματική κατηγορία: | [EL] Επιστήμη Πολιτικού Μηχανικού[EN] Civil Engineering |
| Λέξεις-κλειδιά: | suction caissons; jacket structure; FE modelling; dimensional analysis; earthquake; wind-turbine |
| Κάτοχος πνευματικών δικαιωμάτων: | © by the author(s) |
| Διατίθεται ανοιχτά στην τοποθεσία: | https://iconhic.com/2019/2019/10/id-380-seismic-response-of-jacket-wind-turbines-dimensional-analysis-of-foundations-and-ssi/ |
| Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη: | https://iconhic.com/2019/proceedings/ |
| Τίτλος πηγής δημοσίευσης: | Proceedings of the 2nd International Conference on Natural Hazards and Infrastructure |
| Τεύχος: | Online |
| Σελίδες τεκμηρίου (στην πηγή): | Article no 380 |
| Όνομα εκδήλωσης: | 2nd International Conference on Natural Hazards and Infrastructure |
| Τοποθεσία εκδήλωσης: | Chania, Crete, Greece |
| Ημ/νία έναρξης εκδήλωσης: | 23/06/2019 |
| Ημ/νία λήξης εκδήλωσης: | 26/06/2019 |
| Σημειώσεις: | This research study has been financially supported by the Greek State Scholarship Foundation (IKY Fellowships of Excellence for Postdoctoral Studies in Greece -MIS 5001552. |
| Εμφανίζεται στις συλλογές: | Μεταδιδακτορικοί ερευνητές |
Αρχεία σε αυτό το τεκμήριο:
| Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
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| 380_ICONHIC_Gelagoti.pdf | Συνεδριακή Δημοσίευση - Conference Paper | 15 σελίδες σελίδες | 2.78 MB | Adobe PDF | Δημοσιευμένη/του Εκδότη |  | Δείτε/ανοίξτε |