Seismic responses of monopile in sands under scour conditions
Wenyu Jiang, Cheng Lin
Dans les comptes rendus d’articles de la conférence: GeoVirtual 2020: 73rd Canadian Geotechnical ConferenceABSTRACT: Monopile-supported offshore wind turbines (OWTs) are vulnerable to both scour and earthquake in seismically active regions. Scouring changes both dynamic characteristics and seismic demands of monopile. In general practice, an estimated maximum scour depth is used for the design of marine foundations. Nevertheless, the highest seismic demand for the monopile may not be associated with the maximum scour depth. Such combined effects of scour and earthquake on monopile responses are not well understood, particularly for live-bed conditions involving changeable scour depths. This study aims to fill this gap by conducting nonlinear time-domain dynamic analyses considering various scour depths. Through 30 parametric analyses, scour effects on seismic responses of monopiles in dense sands were investigated, and recommendations for selecting proper scour depths were made for the seismic design of monopile.
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Citer cet article:
Jiang, Wenyu, Lin, Cheng (2020) Seismic responses of monopile in sands under scour conditions in GEO2020. Ottawa, Ontario: Canadian Geotechnical Society.
@article{Jiang_GEO2020_274,
author = Wenyu Jiang, Cheng Lin,
title = Seismic responses of monopile in sands under scour conditions ,
year = 2020
}
title = Seismic responses of monopile in sands under scour conditions ,
year = 2020
}