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Fragility analysis of offshore wind turbine expose to near-field pulse-like ground motion
https://orcid.org/http://orcid.org/0000-0002-4378-180X
https://orcid.org/http://orcid.org/0000-0003-2663-3351
The near field pulse-like ground motion has significant effects on a long-period structure like a wind turbine. Such pulses can be due to source effect (directivity) or site effect (presence of basins), to name a few. The presence of such pulses in the existing recordings of earthquakes is well documented. However, due to the paucity of such pulse-like recordings, simplified shapes have been proposed in literature in accordance with the observed features. In this study, the influence of characteristics parameters of earthquake velocity pulse on the monopile-supported offshore wind turbine (OWT) determined. The four parameters of velocity pulse, i.e., vp the velocity amplitude, fp the prevailing frequency, n number of pulse, and the α/β parameter of envelope function, are considered. To perform the incremental dynamic analysis, the numerical model of OWT is developed in open-source software OpenSees. The pulse-like ground motion parameters effects are shown in terms of fragility curves for the serviceability limit state and ultimate limit state.
Fragility analysis of offshore wind turbine expose to near-field pulse-like ground motion
https://orcid.org/http://orcid.org/0000-0002-4378-180X
https://orcid.org/http://orcid.org/0000-0003-2663-3351
The near field pulse-like ground motion has significant effects on a long-period structure like a wind turbine. Such pulses can be due to source effect (directivity) or site effect (presence of basins), to name a few. The presence of such pulses in the existing recordings of earthquakes is well documented. However, due to the paucity of such pulse-like recordings, simplified shapes have been proposed in literature in accordance with the observed features. In this study, the influence of characteristics parameters of earthquake velocity pulse on the monopile-supported offshore wind turbine (OWT) determined. The four parameters of velocity pulse, i.e., vp the velocity amplitude, fp the prevailing frequency, n number of pulse, and the α/β parameter of envelope function, are considered. To perform the incremental dynamic analysis, the numerical model of OWT is developed in open-source software OpenSees. The pulse-like ground motion parameters effects are shown in terms of fragility curves for the serviceability limit state and ultimate limit state.
Fragility analysis of offshore wind turbine expose to near-field pulse-like ground motion
https://orcid.org/http://orcid.org/0000-0002-4378-180X
https://orcid.org/http://orcid.org/0000-0003-2663-3351
The near field pulse-like ground motion has significant effects on a long-period structure like a wind turbine. Such pulses can be due to source effect (directivity) or site effect (presence of basins), to name a few. The presence of such pulses in the existing recordings of earthquakes is well documented. However, due to the paucity of such pulse-like recordings, simplified shapes have been proposed in literature in accordance with the observed features. In this study, the influence of characteristics parameters of earthquake velocity pulse on the monopile-supported offshore wind turbine (OWT) determined. The four parameters of velocity pulse, i.e., vp the velocity amplitude, fp the prevailing frequency, n number of pulse, and the α/β parameter of envelope function, are considered. To perform the incremental dynamic analysis, the numerical model of OWT is developed in open-source software OpenSees. The pulse-like ground motion parameters effects are shown in terms of fragility curves for the serviceability limit state and ultimate limit state.
Fragility analysis of offshore wind turbine expose to near-field pulse-like ground motion
Asian J Civ Eng
Chaudhari, Vasudeo (author) / Somala, Surendra Nadh (author)
Asian Journal of Civil Engineering ; 22 ; 1331-1345
2021-11-01
15 pages
Article (Journal)
Electronic Resource
English
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